Alameda – Roofing

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(510) 592-4978

Serving the Greater Bay Area

Services include roof shingle repair, new roofs, residential reroofing, roof coatings, roof panel replacement and roof vents. Brands include Suprema...
License 748858 | DCID5105222565
(925) 405-6911

Serving all of Contra Costa and Alameda Counties

Services include roofing, roof repairs, gutter systems and skylight installations. Brands include Eagle, Carlisle, Monier, GAF/ELK and Sharp...
License 841422, C39 & C-2 | DCID9256854151
(877) 312-3511

Serving Alameda and Contra Costa Counties including Berkeley, Fremont, Hayward, San Leandro, Oakland, Richmond, Concord, Walnut Creek and Antioch

Services include installation, repairs, roofing systems, photovoltaic solar. Brands include DuroLast, Eagle, GAF, Monier Tile and SunTech...
License 721502 | DCID8882337548
(510) 761-5937
(925) 979-5954

Serving the Bay Area including Walnut Creek, Pittsburg, Concord, Richmond, Antioch, Oakland, Hayward, Berkeley and Fremont.

Services include Gutters, Maintenance, repairs, Roofing Systems, Skylights, Ventilation Systems. Brands include Certainteed, IB Roof Systems.
License 154732 | DCID5105363356

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Researched Articles
Why Trust Diamond Certified Roofing Companies Rated Highest in Quality?
A home with a new roof installed by Diamond Certified roofers in Alameda County.

This home has a new roof installed by a Diamond Certified roofing company. You'll feel confident hiring one of the professional roofers listed above because each has been rated Highest in Quality and has earned Diamond Certified. For more information on how to choose the right roofing contractor in Alameda County for you, read the following articles. Photo: Roofmax (2012)

By DIAMOND CERTIFIED PROGRAM STAFF WRITERS
Topic: Finding High Quality Roofing Contractors in Alameda County

OAKLAND — You are the customer. If your goal is to choose a roofing company that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified roofing contractor. Each has been rated Highest in Quality in the most accurate ratings process anywhere. And you’re always backed by the Diamond Certified Performance Guarantee. Here’s why the Diamond Certified ratings and certification process will help you find a top-rated roofing company and is unparalleled in its accuracy, rigor and usefulness:

1) Accuracy: All research is performed by live telephone interviews that verify only real customers are surveyed, so you'll never be fooled by fake reviews.

2) Statistical Reliability: A large random sample of past customers is surveyed on an ongoing basis so the research results you see truly reflect a Diamond Certified company’s top-rated status.

3) Full Disclosure: By clicking the name of a company above you'll see the exact rating results in charts and read verbatim survey responses as well as researched articles on each qualified company.

4) Guaranteed: Your purchase is backed up with mediation and the Diamond Certified Performance Guarantee, so you can choose with confidence.

Click on the name of a Diamond Certified company above to read ratings results, researched articles and verbatim customer survey responses to help you make an informed decision.

More than 200,000 customers of local companies have been interviewed in live telephone calls, and only companies that score Highest in Quality in customer satisfaction–a 90+ on a 100 scale–as well as pass all of the credential-based ratings earn Diamond Certified. By requiring such a high score to qualify, the Diamond Certified program eliminates mediocre and poorly performing companies. Read detailed information about the ratings and certification process.

How to Choose
Hiring Good Roofers in Alameda County for New Roofing and Reroofing Services
Alameda County roofing services in Oakland, Hayward, Berkeley and Fremont.
A multi-tiered roof installation by a local roofing contractor. Photo: Century Roof and Solar Inc. (2012)

The integrity of your home depends on the reliability of your roof. If your roof leaks or needs other roofing repairs, water damage can ruin your belongings and cause underlying problems such as mold.

But the quality of your roof depends on the skill and experience of the Alameda County roofing company you choose to install and repair it. That’s why it’s important to hire professional roofers who truly know their trade. Expert roofing contractors have expertise in installing new roofs and repairing existing roofs, and they can offer a better overall value....

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The integrity of your home depends on the reliability of your roof. If your roof leaks or needs other roofing repairs, water damage can ruin your belongings and cause underlying problems such as mold.

But the quality of your roof depends on the skill and experience of the Alameda County roofing company you choose to install and repair it. That’s why it’s important to hire professional roofers who truly know their trade. Expert roofing contractors have expertise in installing new roofs and repairing existing roofs, and they can offer a better overall value.

In-depth research will help you find a high-quality roofing company in Alameda County, including those in the major cities of Oakland, San Leandro, Berkeley, Hayward, Union City and Fremont, as well as in the smaller towns and the Tri-Valley to complete your roofing project.

But don't worry if you don't have a lot of time to spend researching local roofing installers. That's because Diamond Certified has done most of the work for you. The following articles will walk you through the rest of the steps you can take on your own to hire the best roofing company in Alameda County for you.

Know What You Want from Your Alameda County Roofing Company Including Those that Serve Oakland, Alameda, Berkeley, San Leandro, Union City, Fremont, Hayward, Pleasanton, Newark and Dublin
Before you start your search, decide whether you need roof repairs or need to have your existing roof replaced. Once you’ve narrowed down the reroofing and roof repair services available, don’t overlook the importance of aesthetics.

Today there are many choices in roofing materials that will match and offset the appearance of your home, including traditional asphalt shingles, slate roofs, rubber roofing, metal roofing, concrete roof tiles and wood shingle and wood shake roofing.

You’ll want to match the project to a qualified roofer who can provide the quality and appearance you’re looking for. Some local roofing companies in the larger cities of Pleasanton, Oakland, Hayward, Berkeley, Hayward, Fremont, San Leandro or your area of Alameda County specialize in copper roofs and tin roofing, while others can install tile roofs and energy efficient roofing.

Likewise, commercial and industrial roofing is a specialty. If you need a new roof for your business, be sure the contractor you’re considering installs commercial roofs.

Be ready to discuss the project timeline and any expectations you have for the services you receive from the roofers. You’re more likely to find the best roofing contractor for your job in Alameda County including in the smaller Alameda County cities of Komondorski Village, Mount Eden, Cherryland, Russell City, Sunol, Ashland, Newark, San Lorenzo and the Tri-Valley Area if you’re prepared.

Why Research Good Roofers in Alameda County
While it’s best to choose a Diamond Certified company because they’re rated Highest in Quality, that may not always be possible. If you’re unable to choose a Diamond Certified roofing contractor in your area of Alameda County, you can improve your chances of hiring a good roofer by checking out candidates on the Contractors State License Board website to ensure active license and workers’ compensation insurance. Violations will appear on their license, so you’ll know about infractions or serious grievances that have been processed by the state.

Then verify roofing company credentials. Some local roofing contractors in the larger Alameda County cities of Oakland, Dublin, Newark, Pleasanton, Berkeley, San Leandro, Fremont, Union City, Hayward and Alameda have been certified as authorized roof system distributors and installers who can simplify the entire reroofing and roof repair process for customers.

Some roof repairs can be done quickly, but large jobs like roof installations and reroofing may take days or even weeks. In those cases, it’s especially important to find a roofing company that has roofers who are dedicated to customer service and with whom you can work well. Professional qualities you may want to look for include promptness, friendliness and cleanliness; especially because the roofers will be spending so much time working on your home.

Smart consumers recognize that hiring local roofing companies in Alameda County is often their best option. That’s because local roofing contractors who live and work in the area may be most likely to offer emergency roofing repairs and reliable roofing installation.

Research Good Roofing Companies in Alameda County Including in Union City, Ashland, Cherry Valley, Sunol, Mt Eden, Emeryville, Piedmont and the Tri-Valley
Now that you’ve done initial research, talk with a few Alameda County roofers. If you live in one of the larger cities like Oakland, Berkeley, Fremont, Hayward, San Leandro and Alameda, you will find many good roofing companies to choose from. If you live in smaller cities within the Tri-Valley or rural areas, many roofers will travel to your location, including the smaller towns of San Lorenzo, Sunol, Mount Eden, Castro Valley, Emeryville and Piedmont.

When interviewing roofing companies, have a written list of questions and write down the answers you get from each roofer. Remember, many roof contractors will not provide estimates over the phone without seeing the job first.

Remember, you don’t need to set an appointment for an estimate if you weren’t impressed with your initial contact with the roofing contractor. If the representatives you’ve talked with don’t meet your expectations or can’t answer your questions, end the conversation and move on to the next high-quality roofers on your list.

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Know What You Want
Decide What You Want From Your New Roof and Alameda Roofing Contractors

Before you interview good roofing contractors over the phone or in person, think carefully about your project, the type of roof you want and what qualities you’re looking for in a roofing company. Some homeowners find it helpful to write down questions and keep a file of ideas. This allows them to present clear expectations to the roofing contractors they interview.

Here are a few questions to get you started:...

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Before you interview good roofing contractors over the phone or in person, think carefully about your project, the type of roof you want and what qualities you’re looking for in a roofing company. Some homeowners find it helpful to write down questions and keep a file of ideas. This allows them to present clear expectations to the roofing contractors they interview.

Here are a few questions to get you started:

  • Do I want a Diamond Certified company that is rated best in quality and backed by the Diamond Certified Performance Guarantee?
  • Do I need a new roof or roof repairs?
  • What is my budget for reroofing?
  • Is there a specific roof color or material I’m interested in? (Such as tile roofs, metal roofing, copper roofs, traditional roof shingles, wood shake roofing, etc.)
  • Are there any details that may make my roofing project more complicated or need to be taken into account during the planning (i.e. a steep roof, dormers, a narrow driveway that may be too small for supply trucks, a short timeframe, etc.)?
  • What characteristics do I want in an Alameda County roofing contractor? This may include timeliness, reliable follow-up services, emergency roofing repair services, good communication skills, etc.

Thoroughly Interview Good Roofing Contractors in Alameda County Including Those in the Major Cities of Oakland, Fremont, San Leandro, Hayward and Berkeley
If you have a list of questions to ask the roofing contractors you interview, you’ll get better results. Prewritten questions will keep you on track and ensure you ask questions that are most pertinent to the accomplishment of your job. Write down the roof contractors’ answers and note their tone and the general feeling you get from your time with them. This will help you narrow down your choices and pinpoint the best local roofer in Alameda County for you.

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What to Ask on the Phone
Questions to ask Local Roofers on the Phone
  • Has your roofing company earned and maintained a Diamond Certified rating?
  • Are you a licensed roofing contractor?
  • What is your state contractor license number?
  • Do you have active liability and workers’ compensation insurance? Are all of the workers you employ covered by this insurance?
  • What is your specific experience with new roofing installations and roof repairs in Alameda County?
  • Do you charge for roofing estimates? ...
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  • Has your roofing company earned and maintained a Diamond Certified rating?
  • Are you a licensed roofing contractor?
  • What is your state contractor license number?
  • Do you have active liability and workers’ compensation insurance? Are all of the workers you employ covered by this insurance?
  • What is your specific experience with new roofing installations and roof repairs in Alameda County?
  • Do you charge for roofing estimates?
  • Will my reroofing project require a permit?
  • If my project requires a permit, will you get them for me? (Beware of contractors who ask you to take out permits. This may be a sign they’re not licensed contractors.)
  • Do you have your own roof installation crew, or do you subcontract roof installations here in Alameda County?
  • Are you personally on site during the roofing process? If not, who is in charge of the roofing crews?
  • Is there a specific roof brand and type you recommend (GAF-ELK, CertainTeed, Owens Corning, Monier, IB Roof Systems, etc)? Why?
  • How long has the manufacturer been making the roof shingles or roofing systems you install? (This is important because product warranties are worthless if the manufacturer goes out of business.)
  • Are you authorized to install new roofs (such as a Certified Duro-Last Roofing Installer or Certified Georgia-Pacific Roofing Installer)? Remember: Installation by unapproved roof contractors can void manufacturer’s warranties.
  • What guarantees and warranties do you offer on new roofs and roof repairs in addition to the warranty on the windows?
  • How long have you been a roofing contractor in Alameda County?
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What to Ask in Person
Interview Questions to Ask Professional Roofing Contractors in Person
New roof and reroofing services on shingle roofs, slate roofs and metal roofs.
New roofing installation on a pitched roof with a dormer. Photo: Advanced Roofing Services, Inc. (2012)

The following questions are those you should ask of any local roofing contractors you're considering hiring. This is best done in person, after you've had a chance to narrow your list through telephone interviews.

Invite each of the stand-out roofing companies to send a representative to your home. This will give them a chance to see your home, review the damage or current roof in person, and give you an estimate based on your specific needs.

The following questions will get you started:...

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The following questions are those you should ask of any local roofing contractors you're considering hiring. This is best done in person, after you've had a chance to narrow your list through telephone interviews.

Invite each of the stand-out roofing companies to send a representative to your home. This will give them a chance to see your home, review the damage or current roof in person, and give you an estimate based on your specific needs.

The following questions will get you started:

  • How much time will the roofing job take, from ordering the new roof materials to completion of new roof installation/roof repairs?
  • Will I be able to stay in my home during the roofing installation or roof repairs?
  • Will my new roof be more energy efficient than my current roof?
  • Have you completed roofing projects in my area of Alameda County where I can see how the roof installations look from the street?
  • Do you have recent customer references I can call who hired you for work similar to what I need?
  • How would I handle future service issues? Are you responsible for warranty work if there’s a problem with my new roof or roofing repairs?
  • What can I do to make the roof installation process easier?
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What to Ask References
Ask Previous Customers About Their Experiences with Local Roofers in Alameda County

It’s best to choose Diamond Certified roofers because all certified companies have passed an in-depth ratings process that most other companies can’t. If you want quality from a roofing contractor in Alameda County and the greater Bay Area, you will have confidence choosing a Diamond Certified company....

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It’s best to choose Diamond Certified roofers because all certified companies have passed an in-depth ratings process that most other companies can’t. If you want quality from a roofing contractor in Alameda County and the greater Bay Area, you will have confidence choosing a Diamond Certified company.

Diamond Certified reports are available online for all certified companies, and you’ll never be fooled by fake reviews because all research is performed in live telephone interviews of real customers.

If you can’t find a Diamond Certified roofing company within your area of Alameda County and the Tri-Valley, you’ll have to do some research on your own. If you do, it’s wise to call references.

Keep in mind, though, that references provided to you by the roofers are not equal in value to the large random sample of customers surveyed during the Diamond Certified ratings process. That’s because references are usually not randomly selected from all of a company’s customers. So the contractors will likely give you a few customers to call that they know are satisfied.


If you do call references, specifically ask for a list of the roofing company’s 10 most recent customers to help avoid them giving you only the names of customers they know were satisfied.

The following are some questions to ask roofing company references:

  • Were you satisfied with the roof installation and the customer service from _(roofing company name)_?
  • What was the type and scope of job they did for you (reroofing/roof replacement, roof repair, weatherproofing, roof leak repairs, etc.)?
  • Did the Alameda County roof contractor you hired complete the work on time?
  • Did the contractor keep you up-to-date on the status of the project?
  • Were there unexpected costs? If so, what were they for and were they avoidable?
  • If you live in a smaller town such as Albany, Castro Valley, Newark, San Lorenzo or Sonol, did the roofers charge you extra to travel to your home?
  • Did the roofing company employees show up on time?
  • Did the roofers clean up after finishing the roofing installation?
  • If you need a new roof or roof repairs in the future, would you use this roofing contractor again?
  • Would you recommend them to friends or family?
  • Can I see your new roof installation or roof repairs?
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Review Your Options
Final Steps to Hiring a Good Roofing Contractor
The Diamond Certified symbol has been awarded to companies that scored Highest in Quality in an accurate ratings process.

Your roofing contractor will determine the quality and value of your new roof, which will be your first line of defense against water damage from rain or storms. A good roof can even impact the resale value of your home.

So prior to deciding on the best roofers in Alameda County for you, it’s important to review the notes you took during your interview process and ask yourself the following questions:...

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Your roofing contractor will determine the quality and value of your new roof, which will be your first line of defense against water damage from rain or storms. A good roof can even impact the resale value of your home.

So prior to deciding on the best roofers in Alameda County for you, it’s important to review the notes you took during your interview process and ask yourself the following questions:

  • Can the roofing contractors you interviewed meet your needs in terms of scheduling, products and installation preferences?
  • Are the Alameda County roofers I spoke with knowledgeable on the new roofing products they sell and install?
  • Can the roofing company liaison tell you which roofing services and roof products best suit your needs and why (i.e. roof leak repairs, roof replacement, aluminum roofing, corrugated roofing, membrane roofing products, ceramic tile roofing, wood shingles, etc.)?
  • Is the roofing installation company sensitive to your budget? Can they offer various products that fit your resources?
  • Do the roof contractors in Alameda County offer written warranties that protect you in the event of a product failure or installation error?

You may also want to examine your expectations for your new roof, keeping in mind what may not and may be possible. For instance, when having a new roof installed, it might not be reasonable to expect an continuous schedule or a quiet worksite.

Talk with your roofing contractor about what you can reasonably expect while the roofers are working on your home. You are more likely to be satisfied with the completed product and the work while it’s in progress if you go into the job with fair expectations.

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How to Work With
Get Honest Roof Repair Estimates from Alameda County Roofers

The best roofing contractors in Alameda County, including those in the larger cities of Oakland, Dublin, Newark, Pleasanton, Berkeley, San Leandro, Fremont, Union City, Hayward and Alameda and even some in the smaller towns like Ashland, Cherryland, Emeryville, San Lorenzo and Russell City, can be selective about which roofing jobs they take. That’s because not every roofing company can handle every kind of roof repairs or roof installation. It’s important to look for the high-quality roofing contractors that have the skills and ability to do the roofing work you’re looking for.
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The best roofing contractors in Alameda County, including those in the larger cities of Oakland, Dublin, Newark, Pleasanton, Berkeley, San Leandro, Fremont, Union City, Hayward and Alameda and even some in the smaller towns like Ashland, Cherryland, Emeryville, San Lorenzo and Russell City, can be selective about which roofing jobs they take. That’s because not every roofing company can handle every kind of roof repairs or roof installation. It’s important to look for the high-quality roofing contractors that have the skills and ability to do the roofing work you’re looking for.

Once you’re narrowed down your choices by interviewing roofers, meet in person with the roofing estimator at your home for an on-site estimate. Discuss what you are looking for in your new roof or roofing repairs, and listen to their suggestions of materials and styles.

You may want to get several estimates, but limit it to a small number of the best roof contractor candidates. Roofers appreciate knowing that customers are looking for good service and fair prices rather than cheap roofing. This will also improve your chances of finding a quality roofer who really understands the trade and provides the best quality workmanship.

Get Comprehensive Roofing Contracts from Alameda County Roofers
Now that you’ve found a good roofing contractor to hire, it’s the perfect time to ask for a written contract that outlines your roofing job details. The contract should include the cost, the materials to be used and installation information, such as projected start and end dates.

Read the entire contract and be sure you understand all the terms and limitations before you sign. Once you’ve signed a contract with an Alameda County roofing company, you have committed to abide by the information within the contract, so for your protection, never sign a blank or incomplete estimate.

Remember, the contract will protect both you and your roofing contractor. So it’s advisable to write in any verbal agreements or special requests. This includes any special agreements you’ve reached, such as reasonable expectations for the care of your home and yard during the roofing installation process.

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Be a Good Customer
How Can You Be a Good Roofing Company Customer?

It's your roofer’s responsibility install quality roofing products using the best installation techniques. But you play a big part in the success of your new roof, too. By being a good customer, you can simplify the process and help limit some of the common pitfalls of roof replacement or reroofing services.

Here are a few simple steps you can take to be a good customer when hiring Alameda County roofing contractors....

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It's your roofer’s responsibility install quality roofing products using the best installation techniques. But you play a big part in the success of your new roof, too. By being a good customer, you can simplify the process and help limit some of the common pitfalls of roof replacement or reroofing services.

Here are a few simple steps you can take to be a good customer when hiring Alameda County roofing contractors.

  • Be clear and upfront with the roofers. Tell them what you expect from your new roof, the long-term outcome you want and specific ways they can satisfy your hopes.
  • Restate your expectations and goals, and reiterate to the Alameda roofing company representative your understanding of the agreement. Most problems with local roofers occur because of a breakdown in communication. Being clear about your expectations and theirs can help you avoid most conflicts.
  • Ask your roofing contractor if you should call to check on the progress or if he will call you with regular updates.
  • Be sure the roofing company service staff can reach you at all times while they’re reroofing your home or completing your roofing repairs. The work will move along more smoothly if your roofer can reach you with updates, questions or for work authorizations.
  • When your contractor contacts you, return calls promptly to keep the roofing installation and repairs on schedule.
  • Pay for the roofing installation or roofing repairs on time.

Why would you want to be a good customer? Roofing contractors in Alameda County are pleased with customers who are honest and easy to work with. Your good manners set the path of the work from your end and create an environment favorable to a good relationship. Things will most likely go well and any problems may be more easily resolved.

Simplify the Job for Alameda County Roofing Companies
Before and while the work is in progress, keep in mind ways you can simplify the job for your roofing contractors. While the Alameda County roofers you’ve hired should be professionals who are able to deal with difficulties and unanticipated circumstances during roof construction, you can take small steps to ease the work. Not only will this create an atmosphere of collaboration, it will also save you money by preventing unnecessary delays.

Before the job starts, survey your property for potential challenges that may make the job harder for the roofing contractors and that may add time to the job. This can include tree branches near the roofline or barriers that make it hard for the work trucks to enter your property, or lawn furniture that may be in the way of the roofing contractors. You may even want to plan a pre-work walk-through with the roofing company foreman to locate potential hazards.

Keep children and pets away. Not only is it unsafe for your loved ones to be near the construction site, it also can also add time to the job if the roofers need to watch out for pets and children. If you have pets that use the yard near the roof construction area, take them out on a leash for the duration of the work so that the roofers don’t need to worry about closing gates behind them.

Ask your Alameda County roofing professional what you can do to simplify the job. In some cases, it may be easier for you to take care of tree trimming, roof cleaning or moving vehicles before the construction crews arrive and it may save you time and money.

Make sure your roofing company has contact information where they can reach you at all times, such as a cell phone or work phone number. This can limit costly delays if they need to reach you with updates, questions and authorizations for unforeseen situations.

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Check the Work
Compare the Completed Roofing Work to Your Agreement

Once your roof repairs or reroofing is completed, most good roofers in Alameda County will give you a written invoice that lists the roofing services you are being billed for.

For your protection and that of your roofing contractor, this invoice should include:...

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Once your roof repairs or reroofing is completed, most good roofers in Alameda County will give you a written invoice that lists the roofing services you are being billed for.

For your protection and that of your roofing contractor, this invoice should include:

  • The roofing company name, business address and state license number.
  • A detailed list of all roofing work performed.
  • An itemized list of roofing products and replacement parts used.
  • The total cost for the roof repairs or total reroofing, including the amount due for labor.
  • Written proof of all warrantees and guarantees provided by the roofing manufacturer and roofing installers.

To be sure that all the work lives up to your expectations and the work order, ask your Alameda County roofing contractor to walk through the job with you and show you the finished work so you can check it against the invoice.

This is the time to ask any questions about the work and maintaining your new roof. Any discrepancies may be harder to remedy once the roofing contractor has received final payment and left the premises.

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Written Warranties
Get Written Warranties from Alameda County Roofers
Diamond Certified roofing companies serve Alameda County and the Bay Area.
A new roof installed on a large home and outbuildings. Photo: General Roofing Company (2012)

Before your roof contractor leaves the premises, ask for written proof of warranties and guarantees.

Not all roofers back up their work. But if the roofer you’ve chosen does, they should be willing to give you the details in writing, including these items:...

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Before your roof contractor leaves the premises, ask for written proof of warranties and guarantees.

Not all roofers back up their work. But if the roofer you’ve chosen does, they should be willing to give you the details in writing, including these items:

  • The roofing company name and physical address.
  • Their state contractors license number.
  • The work and products covered, including whether the roofing company will repair or replace the roofing products or give you a refund if you have a warranty claim.
  • Your responsibility if you file a warranty claim, such as if you have to pay for labor or pay a prorated amount for repairs.
  • Any terms and limitations.
  • If the roof warranty coverage is transferrable to the new owner if you sell your home.
  • All exclusions must be in writing.
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Top 10 Requests
Top Service Requests of Roofing Contractors in Alameda County

The top 10 requests for new roofs and roof replacements listed below are available within Alameda County including the main cities of Oakland, Alameda, Berkeley, San Leandro, Union City, Fremont, Hayward, Pleasanton, Newark and Dublin.

Metal Roofing Installation...

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The top 10 requests for new roofs and roof replacements listed below are available within Alameda County including the main cities of Oakland, Alameda, Berkeley, San Leandro, Union City, Fremont, Hayward, Pleasanton, Newark and Dublin.

Metal Roofing Installation
Metal roofing is a popular choice for its durability, flexibility and available colors and styles. Sometimes called tin roofs, metal roofing is available as copper roofing, aluminum roofing, steel roofing, stainless steel roofing, corrugated roofing, standing seam metal roofing, metal shingle roofs and metal panels. Metal roofing is weather resistant, lightweight, portable and is often used on residential, commercial and industrial buildings.

Steel Roof Installation
Steel roofs and stainless steel roofing is a good choice for harsh climates and as a design element for modern homes. Most steel roofs are installed as rolled roofing, standing seam roofs or metal shingles. Some steel shingles mimic slate, wood and tile shingles with the strength and durability of steel roofing.

Roof Repair

Common roof repairs in Alameda County fix improperly installed pipes and gutters, roof leaks, missing shingles, roof flashing leaks, skylight flashing, roof valley flashing, roof ridge vent damage, gutter problems and nail holes. Most roofing contractors in Alameda County provide emergency roof repairs and roof maintenance.

Roof Shingle Installation
Roof shingles, including those made by Owens Corning, CertainTeed, IKO, Tamco, Celotex and GAF-ELK roofing, are a roofing choice made of individual roof shingles that overlap. Most are laid in rows with the top shingles hanging over the lower shingles. Roofing shingles are typically made of asphalt, but can be metal, stone, tile or wood. Shingles come in a variety of colors and styles.

Flat Roofing Repair & Installation
Unlike sloping roofs, flat roofs are horizontal or nearly horizontal to the building. They may be residential or commercial roofs, and are often made of tar and gravel, rubber roofing, membrane roofing or metal roofing. Many buildings incorporate flat roofing so that they can support HVAC systems, living roofs/green roofs and living areas on the roof surface.

Roofing Tile Installation
Clay tiles, solar roof tiles, slate roof tiles, concrete roof tiles, plastic tiles, cedar tiles and ceramic tiles are all popular roofing tile choices in Alameda County. They are long-wearing, unique and often sustainable roofing options. Roofing tiles are available in many styles, including flat tiles, imbrex and tegula tiles, Roman tiles, mission or barrel tiles, interlocking roof tiles, and interlocking pantiles.

New Roof Installation

New roof installations on new homes and existing structures are a complete replacement of existing roof structures. New roofs are recommended for existing homes that have leaky roofs that regular roof repairs won’t fix. New roofs are installed by roofing contractors and may include tile roofs, rubber roofs, shingle roofs, wood shingle roofs and metal roofs.

Roof Replacement

Roof replacements are the removal and reroofing of existing roofs. Roof replacement is an alternative to roof recovering, and is often called re-roofing or reroofing. Reroofing can change the shape or style of an existing roof, and may incorporate new roofing systems or roofing materials to update and add value to a home or building.

Rubber Roof Repair & Installation

Rubber roofing, often installed in rolled roofing form or liquid rubber roofing, is a specialized roofing cover for roof repairs or new roofing. Rubber roofs may be a good choice for roofs that leak or for flat roofs. Rubber roofs are often installed on commercial and industrial buildings, but are available as rubber roof shingles and recycled rubber roof tiles for residential homes.

Roof Panel Installation

Whether made of corrugated metal or translucent fiberglass, roof panels are good choice for homes, greenhouses and patio covers. Metal roof panels comes in a variety of colors and styles. Roof panel installation is quick and attractive, and the lightweight panels are a good choice for commercial and residential roofing.

Top 10 Roofing Brand Requests in Alameda County
The following roofing brands are some of the most popular roofing manufacturer products installed in Alameda County.

  1. GAF Roofing
  2. Firestone Roofing
  3. Duro-Last/DuraLast Roofing
  4. Decra Roofing
  5. Monier Roof Tiles
  6. Gerard Roofing
  7. Sika Sarnafil Roofing
  8. Galvalume Metal Roofing
  9. Ondura Roofing
  10. CertainTeed Roofing
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If Things Go Wrong
The Value of The Diamond Certified Performance Guarantee

Diamond Certified roofing companies in Alameda County are backed by the Diamond Certified Performance Guarantee. If the roofing contractor you’ve hired is Diamond Certified and you can’t resolve a conflict by talking with the company owner, contact the Diamond Certified mediation department at info@diamondcertified.org or call 800-738-1138.

End Conflict with Alameda County Roofing Contractors...

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Diamond Certified roofing companies in Alameda County are backed by the Diamond Certified Performance Guarantee. If the roofing contractor you’ve hired is Diamond Certified and you can’t resolve a conflict by talking with the company owner, contact the Diamond Certified mediation department at info@diamondcertified.org or call 800-738-1138.

End Conflict with Alameda County Roofing Contractors
You’ve carefully chosen a qualified roofer in Alameda County. But whether you’re unhappy with the completed work or communication problems are holding up your job, it’s important to know how to handle disagreements with your roofing company.

The easiest way to end conflict is to attempt to resolve the problem directly with the roofing foreman or company owner. Most local roofers are proud of their company’s reputation, so they try to keep customers happy. When talking with your roofer, remember:

  • Discuss problems or disagreements immediately. Don’t wait until the roof repairs or re-roofing is done before voicing your concerns.
  • Remain calm and rational. Shouting, yelling, threatening or getting angry will only derail the conversation
  • Sit down with the Alameda County roofing company representative and review your contract for roof repairs or roofing installation.
  • Document in writing and photograph your complaints.
  • Set a deadline for resolution of the situation. You may withhold payment until the dispute is figured out.
  • If you don’t get a positive response from your roofing contractor, consider hiring a local building inspector or roofing expert to review the work.
  • Fire the roofing contractors as a last alternative. This can lead to legal proceedings and work delays, so only fire your roofers if you have no other option.
  • If you face serious problems with a roofing contractor that you cannot settle, you may file a complaint with the Contractors State License Board.
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Glossary of Terms
Glossary of New Roofing and Reroofing Terms

The roofing terms below will help you better understand the roofing construction and roofing repair process and will allow you to better communicate with your local roofing company.

aggregate roofing
Aggregate roofing is used as surfacing or ballasting for a roof system. Aggregate can be stone, rock, crushed stone, gravel, crushed lava rock or marble chips.

Also known as: aggregate shingles, built-up roof, built-up aggregate roof, roofing aggregates, aggregate rood systems

base flashing...

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The roofing terms below will help you better understand the roofing construction and roofing repair process and will allow you to better communicate with your local roofing company.

aggregate roofing
Aggregate roofing is used as surfacing or ballasting for a roof system. Aggregate can be stone, rock, crushed stone, gravel, crushed lava rock or marble chips.

Also known as: aggregate shingles, built-up roof, built-up aggregate roof, roofing aggregates, aggregate rood systems

base flashing
Base flashing is the roof flashing that is created by the upturned edges of a roof membrane. Base flashing is usually attached to or resting on the roof deck and directs water onto the roof.

Also known as: roof flashing, base flashing detail, composition base flashing, copper base flashing, concealed base flashing, exposed base flashing, metal flashing, lead base flashing

built-up roof
A built-up roof is constructed with several layers of felt and asphalt. Each layer is topped with hot tar or asphalt. The topmost layer is covered with mineral or rock.

Also known as: builtup roofing, BUR roofing, built-up roofing membranes, built-up roofing systems, asphalt built-up roofs, gravel and tar roofing

corrugated roofing
Corrugated roofing is generally sheet metal roofing that has been folded into ridges. Corrugated roof panels are easy to install and easy to maintain.

Also known as: corrugated roof panels, corrugated roofs, clear corrugated roofing, corrugated metal roofing, corrugated rub roof, corrugated fiberglass roofing, corrugated plastic roofing

counter flashing
Flashing attached to a vertical surface that prevents water from seeping into the roof is known as counter flashing. Counter flashing is often used to waterproof the roofing around chimneys and pipes.

Also known as: counterflashing, chimney counter flashing, counter flashing detail, roof flashing

eaves flashing
Eaves flashing is an additional layer of roofing material installed at the roof eaves to prevent water damage from rain seepage.

Also known as: roof flashing, dormer flashing, ice flashing, water damage flashing, ice dam flashing, eave flashing, roof eave flashing, roof ice dam barrier

EPDM roofing
EPDM roofing is a synthetic rubber roof product made of ethylene propylene diene monomer. EPDM roofing is primarily a commercial roof covering that can withstand weathering, abrasion and extreme temperatures.

Also known as: ethylene propylene diene monomer, EPDM rubber roofing, rubber roof, rubber roofing

fascia
Horizontal trim at the eaves that covers the rafter ends is called fascia. Roof fascia runs horizontally across the ends of the roof rafters to form the edge of the roof. Fascia is placed above the soffit and below the roofline.

Also known as: roofing fascia, roof fascia, fascia board, house fascia, fascia trim

flashing
Roof flashing, usually made of metal sheeting or roll roofing, is installed to prevent rainwater from leaking into a building around joints or vents, pipes, chimneys, walls, dormers and roof valleys. Most roof flashing is made of galvanized steel.

Also known as: roof vent flashing, flat roof flashing, lead roof flashing, corrugated roof flashing, roofing flashing, roof detail flashing, vent pipe flashing

gable
The upper part of a wall that comes to a point at the ridge of a sloping roof. The roof ends and walls create a V-shaped feature.

Also known as: gable roof, hip gable roof, gable roof dormer, dormer, cross gable roof, gambrel roof gable, reverse gable roof, gable roof style, gable roof truss

gable roof
Gable roofs are peaked, sloping roofs that form a gable at both ends.

Also known as: hip gable roof, gable roof dormer, dormer, cross gable roof, gambrel roof gable, reverse gable roof, gable roof style, gable roof truss

gambrel roof
Gambrel roofs have two sloping planes of different pitches on either side of the roof ridge. The lower plane of a gambrel roof has a steeper slope than the upper slope. Gambrel roofs have a gable at each end.

Also known as: gambrel angle roof, gambrel roof style

hip roof
A four-sided roof with sloping sides and ends is known as a hip roof.

Also known as: hipped roof, hip roof style, hipped roof style

interlocking shingles
Interlocking shingles are individual shingles that mechanically fasten together to provide stronger wind resistance.

Also known as: interlocked roofing, interlocking shingle systems, interlocking aluminum shingles, interlocking asphalt shingles, interlocking metal shingles, interlocking composite shingles, interlock shingles

laminated shingles
Strip shingles with more than one layer of tabs that create extra thickness are called laminated shingles.

Also known as: three-dimensional shingles, architectural shingles, laminated asphalt shingles, laminate shingles, laminated shingle, laminated roof shingles

mansard roof
A hip roof with two slopes on each side is referred to as a mansard roof. This type of roof contains two sloping planes with different pitches on each of the four sides. The lower sloping roof plane has such a steep pitch, it may appear vertical. Mansard roofs have no gables.

Also known as: French roof, straight mansard roof, flared mansard roof, double-slope roof

metal roofs
Metal roofs are found on commercial and residential buildings. Metal roofs are made from metal pieces, metal tiles or metal slabs. Metal roofs are resistant to weather and temperature changes and are known for their longevity.

Also known as: metal roofing, standing seam metal roofing, steel roofing, copper roofing, corrugated metal roofing, metal roofing panels, tin roof, metal roof shingles, metal fabrication roof, residential metal roofing, sheet metal roofing

overlay
Installing a new roof system over an existing roof without removing the existing roof is referred to as roof overlay. Roofing overlay is generally a more cost-effective way to install a new roof, since it doesn’t include costs of roof removal.

Also known as: roof recover, roof re-cover, vinyl roof overlay, metal roof overlay, roof-over

re-roofing
Constructing a roof on an existing building is referred to as re-roofing.

Also known as: reroofing, roof replacement, shingle replacement, residential re-roofing, reshingling, re-shingling, tear-off roof replacement

roll roofing
Roll roofing is a composition asphalt roofing and felt product manufactured in roll form. Roofing contractors install roll roofing by laying it in overlapping strips over the surface of the roof.

Also known as: rolled roofing, asphalt roll roofing, rubber roll roofing, rolled roof, smooth surface roll roofing, coated felt roofing

roof decking
Roof decking is thick lumber installed over the roof trusses and under the roof shingles or roof system. Roof deck provides the strength of the roof.

Also known as: roof deck, roof decking, tongue and groove roof decking, wood roof decking, metal roof decking, steel roof decking, roof decking tiles

roof vents
Roof vents provide air flow into a home’s attic or space beneath the roof. Roof vent caps are useful to keep debris and water out of the roof vents.

Also known as: attic vents, roofing vents, air vents, soffit vents, fascia vents, attic ventilation, roof exhaust vents, solar roof vents, ridge vents, gable vents, turbine roof vents, powered roof vents, roof air vents

self-sealing shingles
Self sealing shingles are made with thermal sealing cement that firmly seals the shingles together automatically after they have been set properly and warmed by the sun. In warm seasons, the self-seal will be set in a few days. In colder seasons, sealing time depends on the air temperature and the heat of the direct sunlight hitting the shingles. Many roofing contractors manually seal self-sealing shingle roofs that are constructed in winter to assure a firm seal.

Also known as: self-sealing roofing, pre-sealed shingles, sealing tab shingles

shingles
Roof shingles are overlapping pieces set on a roof to protect it from the elements. Roof shingles are commonly made of wood, slate, asbestos cement, bitumen, asphalt or ceramic material.

Also known as: roof shingles, roofing shingles, asphalt roof shingles, metal roof shingles, solar roof shingles, slate roof shingles, rubber roofing shingles, wood roof shingles, fiberglass roofing shingles

slate roofing
Roofing tiles and shingles made of slate rock are known as slate roofing. Slate roofs are durable, fireproof, weather resistant and unique. Synthetic slate roofing materials are also available. These synthetic slate shingles are lighter, easier to install and less expensive than genuine slate roofing.

Also known as: slate roof tiles, slate roof panels, natural slate roofing, flagstone slate roofing, synthetic slate roofing, faux slate roofing, composite slate roofing shingles

soffit
The exposed, finished underside of overhanging roof eaves. The soffit bridges the space between the siding and the roofline. Soffit can be vented to cool the attic space.

Also known as: aluminum soffit, vinyl soffit, soffit and fascia, soffit detail

solar roof
Roof panels, tiles and shingles with photovoltaic cells built in generate electricity much like traditional solar panels. Some solar roof shingles look just like asphalt shingles and are nailed directly onto the roof surface.

Also known as: solar roof tiles, solar roof panels, solar roof shingles, solar electric roofing, photovoltaic roofing, PV roofing

standing seam roof
Standing seam metal roofing is a method of installing metal roof panels vertically and side-by-side. On standing seam roofs, the roofing panels are attached at the sides with the overlapping area forming a seam between the roof panels. Standing seam roof panels are most commonly installed on commercial and industrial buildings, and are used to bring a modern look to residential roofing.

Also known as: metal standing seam roofing, standing seam metal roofing

TPO roofing
TPO or thermoplastic polyolefin roofing is a single-ply roofing membrane that is a heat-reflective and energy efficient roofing system.

Also known as: thermoplastic single-ply roofing, thermoplastic polyolefin roofing

truss
Roof trusses are used in roof construction. They support the weight of the roof framing and roof deck.

Also known as: roof rafters, wooden roof trusses, roof supports, steel roof trusses, prefabricated roof trusses, prefab roof trusses, roofing trusses

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Frequently Asked Questions
Roofing Contractor FAQ

Q: Why choose a Diamond Certified Roofing Contractor?...

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Q: Why choose a Diamond Certified Roofing Contractor?
A: Diamond Certified helps you choose a roofer with confidence by offering a list of top-rated local companies who have passed the country’s most in-depth rating process. Only local roofing companies rated Highest in Quality earn the prestigious Diamond Certified award. Most local roofers can’t pass the ratings. American Ratings Corporation also monitors every Diamond Certified company with in-depth and ongoing research and ratings. And your purchase is backed by the Diamond Certified Performance Guarantee. So you’ll feel confident choosing a Diamond Certified roofing company.

Q: Do I know if I need a new roof or roof repairs?
A: Good roofing contractors will inspect your roof and help you decide whether roofing repairs or a new roof is the best solution. Smaller areas of damage and minor leaks may be fixed with simple roof repairs. Extensive missing or damaged shingles, rotting roof boards, high energy bills, water stains on interior ceilings and walls or large roof leaks may indicate that a roof replacement is needed.

Q: What roofing materials can I choose from?
A: There are several types of roofing materials that are popular among local homeowners:

Asphalt shingles are a common choice for new roofs. They are reasonably priced, range from simple three-tab shingles to durable architectural shingles, come in many colors and types and are easy to repair. Asphalt shingles have a shorter lifespan (about 15 to 30 years) and aren’t as environmentally-friendly as some other roofing material choices.

Wood shingles and wood shake roofing are usually made from cedar wood. They often blend in with a natural environment, weather to an attractive grey color and are easy to repair and replace. Wood shingle roofing can last 30 to 50 years if it’s maintained properly. However, wood shingle and shake roofing can be expensive ton install and requires more maintenance than other types of roofing.

Tile roofing is a popular choice for new roofs because it is durable and attractive. Roof tiles can be made from concrete or clay and come in several colors and styles. Tile roofing is easy to maintain, fireproof and very durable. Tile roofing can be expensive, heavy and is generally a better choice for new homes because of the structural requirements due to the weight of the material. Tile roofing can also be fragile and repairs can be complicated.

Metal roofing, including copper roofs, steel roofing, aluminum roofing and tin roofs, is becoming a more common choice. While it can be expensive to install, metal roofing is very durable and will outlast other roofing materials. It is lightweight, comes in many colors and has a long lifespan—at least 50 years in most cases.

Slate roofing is a beautiful and unique choice. It is fireproof, low maintenance and lasts years longer than other roofing materials. However, slate roofing can be expensive, require specialized installation, and require more maintenance than other types of roofing.

Q: How do I know which type of roof is the best choice for my home?
A: Each home is different, just like the needs of the homeowners. Your roofing company can help you choose the best roofing material and roof style for your home, your budget and your unique wishes.

Q: How long will it take to re-roof my house?
A: Roof replacement can take a few days to several weeks depending on the size of the home and the roofing materials used. Weather and the skill and experience of the roofing contractors can also have an impact on the speed of the re-roofing process.

Q: Should I choose tear-off re-roofing or a roof-over roof construction?
A: Some roofing contractors will install a new roof on top of your existing roof, known as a roof-over or roof overlay. This can save some money on the roofing project since there are no costs for roof removal. However, other roofing companies recommend removing the old roof before installing the new roofing material, known as tear-off reroofing, for a better quality roofing job. Talk with your local roofer in detail about your specific reroofing needs.

Q: Are there eco-friendly roofing materials and methods I can choose from?
A: Yes. A new roof with good insulation can make your home more energy efficient and keep it more comfortable. There are also several ways to make your roof installation more eco-friendly. First, find out if your roofing contractor can recycle old roofing materials. Some roofing contractors dispose of old roofing shingles and materials in a more environmentally-sensitive way. It’s also possible to choose eco-friendly roofing materials for your new roof. From green roofs (roofs that are partially or completely covered with vegetation) and environmentally-friendly composite shake roof shingles to recycled shingles and metal roofing, there are many environmentally-friendly roofing options your roofer can offer.

Q: What happens if someone gets hurt while working on my roof?
A: When you hire legitimate roofing contractors with the correct license, liability coverage and workers’ compensation insurance, you won’t have to worry. Workers’ compensation insurance covers every employee of the company in the case of accident or injury. You will not be held responsible for damages. Make sure you ask your roofing contractor to show you a copy of their active workers’ compensation policy. All Diamond Certified roofers have had to prove they are licenses and carry worker’s compensation insurance in order to pass the Diamond Certified ratings process.

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Consumer Agencies
Roofing Associations and Customer Agencies

National Roofing Contractors Association (NRCA) (www.nrca.net/)
Slate Roofing Contractors Association (SRCA) (www.slateroofers.org/)
Tile Roofing Institute (TRI) (www.tileroofing.org/)
EPDM Roofing Association (ERA) (www.epdmroofs.org/)
Western States Roofing Contractors Association (WSRCA) (www.wsrca.com/)...

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National Roofing Contractors Association (NRCA) (www.nrca.net/)
Slate Roofing Contractors Association (SRCA) (www.slateroofers.org/)
Tile Roofing Institute (TRI) (www.tileroofing.org/)
EPDM Roofing Association (ERA) (www.epdmroofs.org/)
Western States Roofing Contractors Association (WSRCA) (www.wsrca.com/)
Asphalt Roofing Manufacturers Association (ARMA) (www.asphaltroofing.org/)
Roof Coatings Manufacturers Association (RCMA) (www.roofcoatings.org/)
International Green Roofing Association (IGRA) (www.igra-world.com/)
Metal Roofing Alliance (MRA) (www.metalroofing.com/)
Roofing Contractors Association of California (RCAC) (www.rcacal.com/)

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Industry Information
Alameda County Roofing Information
Popular Roofing BrandsTypes of Roofing Services Available in Alameda County Cities ServedZip Codes Served
GAF Roofingnew roofingAlameda
Albany
Ashland
Berkeley
Castro Valley
Cherryland
Dublin
Emeryville
Fremont
Hayward
Komandorski Village
Livermore
Mount Eden
Newark
Oakland
Piedmont
Pleasanton
Russell City
San Leandro
San Lorenzo
Sunol
Union City
94501
94502
94536
94537
94538
94539
94540
94541
94542
94543
94544
94545
94546
94550
94551
94552
94555
94557
94560
94566
94568
94577
94578
94579
94580
94586
94587
94588
94601
94602
94603
94604
94605
94606
94607
94608
94609
94610
94611
94612
94613
94614
94615
94617
94618
94619
94620
94621
94623
94624
94661
94662
94701
94702
94703
94704
94705
94706
94707
94708
94709
94710
94712
ELK Roofingreroofing
Atlas Roofing Corporationroof repair
CertainTeed Roofingflat roofs
Owens Corning Roofingtile roofs
TAMKO Building Products, Inc.roof vent installation
Decra Roofingtin roof
Monier LifeTileroofing shingles
WesTile Roofingroof installation
IB Roof Systemsrubber roof installation
ABC Seamless Roofing commercial roofing
Enviroshake Engineered Roofingroof panel replacement
Georgia-Pacific Roofingroof leak repair
EPDM Roofingsteel roofing
Duro-Last Roofingsteel roofing
Carlisle Roofingaluminum roofing
Tremco Roofsasphalt roof
Garland Roofingcopper roof installation
Suprema Roofingcorrugated roofing
Malarkey Roofingroof coating application
John Manville Roofingmembrane roof
Custom-Bilt Roofingwood shake roofs