Diamond Certified Companies are Rated Highest in Quality and Helpful Expertise.

  • Why this rating is the most accurate.
  • Our editors gather deep company info.
  • Performance is Guaranteed.

Diamond certified companies are top rated and guaranteed

Why Trust Diamond Certified Roofing Companies Rated Highest in Quality?

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.

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Nathan DuCharme is a lifetime veteran of the roofing industry and owner of Capstone Roofing, Inc., a Diamond Certified company. He can be reached at (707) 560-1933 or by email.

Nathan DuCharme

diamond certified contributor profile and expert article

Nathan DuCharme: Building a Reputation

By James Florence, Diamond Certified Resource Reporter

SANTA ROSA — Nathan DuCharme got an early start in the roofing trade by working alongside his father as an adolescent. Later, when he took over his father’s business, he knew he’d have to maintain its reputation while also building it to reach a wider demographic. “When I was a kid, my dad started taking me to work with him and had me throwing shingles and cleaning the grounds,” he remembers. “By the time I was 15, I was doing basic installation and continued to progress from there. About the time I graduated high school, my dad started Capstone Roofing. He and I continued working in partnership until he retired in 1999, at which point I took over the business.”

Shortly after assuming ownership, Nathan made a high-risk investment in his company that he hoped would pay off. “My dad never focused on growing his business, so when I took over, it was just me and four other guys,” he explains. “I wanted to make sure I was getting enough work to keep my guys busy, so I took out a full-page ad in the phone book. My wife thought I was crazy, because it cost more than our mortgage, but I knew I needed to get our name out there. It worked—by 2003, we had doubled the size of our crew, and by 2014, we had expanded to two crews and were doing hundreds of jobs each year. Today, the bulk of our work comes from word-of-mouth referrals, so we’ve definitely built a reputation over the last couple of decades.”

Today, Nathan says his favorite part of his job is wowing customers with Capstone Roofing’s efficient approach. “Whereas most roofing companies will send three guys and take a week to do a job, we send 10 to 12 guys and knock it out in a day or two. I love seeing how shocked clients are when we’ve finished the whole job in a day and it’s like we were never there.”

A lifelong resident of Sonoma County, Nathan currently resides in Windsor. “My dad graduated from Healdsburg High School and my mom graduated from Petaluma High School, so I have deep roots in Sonoma County,” he says. “As a roofer, I really appreciate the weather here. Even in summer, the fog tends to cool things off a little, which makes for pretty good working conditions. I don’t think I could do this somewhere like Arizona.”

Outside of work, Nathan’s primary pastime is staying in shape with mixed martial arts. “I train at Nor-Cal Fighting Alliance four days a week,” he affirms. “I’ve had two amateur MMA fights, but since I’m blind in one eye, it wasn’t realistic for me to pursue fighting as a career, so I mainly do it to stay in shape.” Nathan also enjoys spending time with his wife, Rhonda, and their six children. “Most of our kids have grown up and moved out, which makes it hard to get everyone together, but we try to gather everyone at least once a year.”

In his life and career, Nathan espouses the importance of honesty. “If we’re doing an estimate for a roof replacement and the roof is still in decent shape, I’m not going to sell the customer something they don’t need—I’m going to tell them to save their money,” he says. “Besides, they’ll probably call us again when they do need a replacement, so there’s no real advantage to being dishonest. All it can do is harm your reputation, which, when you’ve put as much effort into growing a business as I have, simply isn’t worth it. It’s just better to be honest and upfront.”

When asked the first thing he’d do if he were to retire tomorrow, Nathan says he’d see the world—that is, after taking a few days to recuperate. “I’m pretty much working all the time, so the first thing I’d do is sleep in. Then maybe I’d do some traveling. I’ve never been to Europe, so that would probably be my first destination.”

Ask Me Anything!

Q: Who are your favorite MMA fighters?
A: Nate Diaz and Cain Velasquez.

Q: Would you rather live in the city or the country?
A: The country.

Q: Are you an early bird or a night owl?
A: An early bird.

Q: What’s your favorite local restaurant?
A: Catelli’s in Geyserville.

Q: What kind of music do you like?
A: Real country, whether the old classics or newer artists like Sturgill Simpson who fly under the radar a little more.

Read more

The Truth about Lifetime Roofing Warranties


SANTA ROSA — When it comes to installing new roofs, many homeowners fail to fully understand their warranties. Most roofing product manufacturers provide a “lifetime warranty,” which seemingly indicates the roof is fully covered throughout its expected lifespan. Unfortunately, it isn’t… Read more

Expert Video Tip

Video: Understanding Your Roof Warranty

Complete Video Transcription:

SANTA ROSA — Host, Sarah Rutan: A roof warranty can be a valuable asset, but if you don’t read the fine print, you might be disappointed… Read more

Ralph Wedge is owner of Wedge Roofing, a Diamond Certified company. He can be reached at (888) 763-7663 or by email.

Ralph Wedge

diamond certified contributor profile and expert article

Ralph Wedge: Roofing Opportunity

By James Florence, Diamond Certified Resource Reporter

PETALUMA — In the wake of an economic recession, Ralph Wedge found an opportunity to start his own business. “Early in my career, I worked for a roofing company doing carpentry work like dry rot repair and upper roof reconstruction,” he recounts. “When the recession of 1974-75 hit, that company went bankrupt and closed its doors, as did several other roofing companies in the area. I saw this as an opportunity to get into the business, so I applied for and received my roofing contractor’s license. That marked the beginning of Wedge Roofing in 1976. I started out small with just a few employees, and have had the pleasure of expanding over time to a staff of nearly 50.”

Today, Ralph says his favorite part of his job is watching projects progress from start to finish. “There are a lot of aspects involved in a roofing project, from the initial consultation to the final installation. I enjoy watching and participating with our staff as they guide each client through this process and leave them happy and satisfied at the end of it.”

A resident of Novato (where he lives with his wife, Jennifer), Ralph spends his free time on a variety of active pastimes. “I’m a competitive sailboat racer, so I spend a lot of my time on the Bay,” he details. “I also play racquetball regularly and enjoy skiing in the winter.” In addition to these personal hobbies, Ralph likes spending time with his family. “I have three boys—they’re all in their 30s now and pursuing their respective careers, but we still do family vacations together. We’ve been to Europe a couple of times, and we’ve also sailed around Tahiti and the British Virgin Islands.”

In regard to his professional career, Ralph believes a company is only as good as the people that comprise it. “Early on, I realized the ability to succeed in this business is all about the people who work for you,” he affirms. “If you enable your employees to thrive, your business will thrive as a result. That’s why I maintain very open relationships with my employees and invest in the best training programs available. Most of our employees have tenures of 10 to 20 years, which I think says a lot about the work environment we’ve created.”

Ask Me Anything!

Q: What was your first job?
A: I was a paperboy.

Q: Have you ever read a book more than once?
A: “East of Eden” by John Steinbeck.

Q: If you could travel anywhere in the world, where would you go?
A: Southern France. I’ve been to Paris, where I enjoyed viewing the beautiful architecture and visiting art and history museums, but I’d still like to see the Mediterranean region.

Q: What’s your favorite thing to do on a rainy day?
A: Rainy days are when roofs start leaking, so I derive great satisfaction by participating in the emergency repair side of Wedge Roofing.

Q: What’s your favorite snack?
A: Potato chips.

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Understanding Your Roofing System Warranty


PETALUMA — A good way to make the most of a new roof is to install it as a “roofing system.” With a roofing system, all components are installed in accordance with the manufacturer’s set guidelines. The main benefit of installing in… Read more

Expert Video Tip

Video: Maintaining Your Roof Warranty

Complete Video Transcription:

PETALUMA — Host, Sarah Rutan: When installing a new roofing system, make sure you’re aware of its warranty terms. To learn more, we’re in Petaluma with Gary Harvey… Read more




  • CertainTeed

  • Owens Corning

  • GAF

  • Malarkey

  • Eagle Tile

  • Boral

  • Monier

  • HydroStop

  • IKO

  • Tropical

Georgia-Pacific Roofing
EPDM Roofing
Duro-Last Roofing
Carlisle Roofing
TAMKO Building Products, Inc.
Decra Roofing
Monier LifeTile
WesTile Roofing
IB Roof Systems
Custom-Bilt Roofing
GAF Roofing
ELK Roofing
Atlas Roofing Corporation
CertainTeed Roofing
Owens Corning Roofing
Tremco Roofs
Garland Roofing
Suprema Roofing
Malarkey Roofing
John Manville Roofing
ABC Seamless Roofing
Enviroshake Engineered Roofing

commercial roofing
wood shake roofs
new roofing
roof repair
flat roofs
asphalt roof
copper roof installation
corrugated roofing
roof coating application
membrane roof
roof panel replacement
roof leak repair
steel roofing
steel roofing
aluminum roofing
tile roofs
roof vent installation
tin roof
roofing shingles
roof installation
rubber roof installation

Bel Marin Keys
Belvedere Tiburon
Black Point
Corte Madera
Dillon Beach
Forest Knolls
Kent Woodlands
Lucas Valley
Marin City
Mill Valley
Mission Rafael
Muir Beach
Muir Woods
Point Reyes Station
San Anselmo
San Geronimo
San Marin
San Quentin
San Rafael
Santa Venetia
Sleepy Hollow
Stinson Beach
Strawberry Point
Tamalpais Valley
Terra Linda


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/)

Know What You Want
Decide What You Want From Your New Roof

Before you interview roofing contractors, think carefully about your project, the new roof or roof repairs you want and what you’re looking for in a roofing company. It may be helpful to write down questions and keep a folder of ideas and samples. This can allow you to present clear expectations to the roofing contractors they interview. The following questions will 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 simple roof repairs?
  • What is my budget for roofing repairs and reroofing?
  • Is there a specific roof color or roofing material I’m interested in?
  • What facets of my home or job may make my roofing project more complicated or need to be taken into account during the planning?
  • What characteristics and qualities do I want in a Marin County roofing contractor?
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What To Ask In Person
Questions to Ask Marin County Roofing Contractors in Person
  • How much time will the job take?
  • Will I be able to stay in my home during the roofing installation?
  • Is the new roof energy efficient? Will it reduce my electric bills?
  • Do you have any recent projects in my area of Marin County where I can see how the roof installations look from the street?
  • Do you have customer references I can call?
  • How would I handle future service issues? Are you responsible for warranty work if there’s ever a problem with my new roof or reroofing?
  • 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 Marin County, Including the Smaller Cities of Black Point, Forrest Knolls, Lucas Valley, Kentfield, Mission Rafael, Olema, Tamalpais Valley and Bel Marin Keys

    It’s best to choose a Diamond Certified roofer because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a roofer in Marin County and the greater Bay Area, you can 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. That’s because all research is performed in live telephone interviews of actual customers.

    If you can’t find a Diamond Certified roofing company within your area, you will need to do some research on your own. Start by calling some references provided by your roofing company. Keep in mind, though, that the references they provide  are not equal in value to the large random sample of customers surveyed during the Diamond Certified ratings process. That’s because references given to customers are hand-chosen customers they know are satisfied instead of randomly selected from all their customers. To avoid this, specifically ask for a list of the company’s 10 most recent customers.

    The following questions are some you may want to ask roofing company references:

    • Were you satisfied with the roof installation and the customer service from _(roofing company name)_?
    • What type and scope of job did they do for you (reroofing, roof repair, roof replacement, roof leak repairs, reshingling, shingle repairs etc.)?
    • Did the Marin 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?
    • Did the roofers charge extra to travel to your home if you live in a smaller town or rural area?
    • Did the roofing company employees show up on time?
    • Did the employees clean up after finishing the window 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 completed roof installation or roof repairs?
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  • Review Your Options
    Find and Hire a Good Roofing Contractor in Marin County, Including the Major Cities of San Rafael, Larkspur, Novato, Mill Valley, Fairfax, San Anselmo, Tiburon, Corte Madera, Sausalito and Ross

    The Diamond Certified symbol has been awarded to companies that scored Highest in Quality in an accurate ratings process.

    Your new roof and roofing repairs can change the appearance of your home, will protect your belongings and family and can even impact your home’s resale value. So before you decide on a roofing company, it’s important to consider the following questions:

    • Can the roofing contractors meet your needs in terms of scheduling, products and installation preferences?
    • Are the Marin County roofers knowledgeable on the 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 panel replacement, aluminum roofing, corrugated roofing, membrane roofing products, ceramic tile roofing, wood roof shingle repair and replacement, shingle repairs, etc.)?
    • Is the roofing installation company sensitive to your budget? Can they offer various productsthat fit your resources? Most contractors will give you bids for good, better and best options that include choices of products, design and aesthetics, prices, brand names/manufacturers and roofing services.
    • Do the roof contractors in Marin County offer warranties in the event of a product failure or installation error? Will they put these guarantees in writing?

    You may also want to examine your goals, keeping in mind that not all of your expectations may be possible or reasonable. For instance, when having a new roof installed, it may not be logical to expect an uninterrupted schedule or quiet process. So talk with your roofing contractor about what you can realistically expect while the roofers are working on your home. You are more likely to be satisfied with the work while it’s in progress and when it’s completed if you go into the job with fair expectations.

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  • How To Work With
    Have Confidence in Roofing Repair Estimates from Local Marin County Roofers

    The best roofing contractors in Marin County, including those in the larger cities of Larkspur, Fairfax, Novato, San Rafael, Corte Madera, Tiburon, Belvedere, Mill Valley and San Anselmo and even some in the smaller towns, can carefully select which roofing jobs they take. Not every roofing company provides every kind of roofing repair or new roof installation, so it’s imperative to hire high-quality roofing contractors that have the skills 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. Discuss what you want in a new roof or roofing repairs, and listen totheir suggestions of materials and styles.

    Limit the number of estimates you get to a few provided by the best roof contractor candidates you’ve found. Roofers appreciate customers who seek good service and fair prices rather than cheap roofing services. This will also improve your chances of finding a quality roofer who really understands their trade and provides the best quality workmanship on roofing installation and roof repairs.

    Get a Detailed Roofing Contract from Your Marin County Roofer
    Now that you’ve found the roofing contractor that’s best for you, it’s the perfect time to ask for a written contract that outlines the details of your roofing job. The contract should include the cost of the job, details about the materials to be used and installation information, such as the projected start and end dates.

    Read the whole contract and be sure you understand the terms and limitations before signing. Once you’ve signed a contract with a Marin County roofing company, you have committed to abide by the information within the contract. For your protection, never sign a blank or incomplete estimate.

    Remember, the contract will protect your interests and those of your roofing contractor. You may write in verbal agreements or special requests you’ve confirmed with your Marin County roofer. This includes any special agreements you’ve reached, such as expectations for the care of your home and yard during the roofing process.

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  • Be a Good Customer
    Make The Job Easier for Your Marin County Roofing Contractor

    While the Marin County roofing contractors you’ve hired should be professionals who are able to deal with difficulties and unexpected situations during roof construction, you can take some easy steps to simplify the work. This can create an atmosphere of cooperation and goodwill, and it can save you money by preventing delays and unnecessary work.

    Before the job starts, survey your property for potential areas that may make the job harder or take longer for the roofing contractors. This can include low hanging tree branches, trees and plants that make it hard for the work trucks to enter your property or get close to the work site, or lawn furniture or ornaments that may be in the way of the roofing contractors. You may even plan a pre-work walk-through with the roofing company foreman to have them point out any challenges they see.

    Keep children and pets away from the jobsite. 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 are watching out for pets or children. If your pets use the yard near the construction area or where the work vehicles or materials are stored, take them out on a leash while the roof installation work is going on so that the roofers don’t need to worry about closing gates behind them.

    Ask your Marin County roofing professional what you can do to simplify the job for them. 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 in the long run.

    Make sure your roofing company can reach you at all times, such as a cell phone or work telephone number. This can prevent costly delays by enabling your roofing contractor to reach you with updates, questions and additional work authorizations.

    How Can You Be a Good Marin County Roofing Company Customer?
    It’s the roofer’s responsibility install quality roofing products using the best possible installation techniques. But you play a big part in the success of your new roof installation, too. Here are a few simple steps you can take to be a good customer when hiring a Marin County roofing contractor.

    • Be clear and upfront with the roofers. Let them know what you want from your new roof, the long-term outcome you’re expecting and specific ways they can satisfy your expectations.
    • Before you hire a roofing contractor in Marin County, restate your expectations and goals, and reiterate to the roofing company representative your understanding of the agreement. Most problems with local roofers occur because of a breakdown in communication. By being clear about your expectations and theirs, you can avoid most conflicts.
    • Ask your roofing contractor if you should call to check on the progress or if he will call you with updates. If your contractor says they will call with updates, confirm how often you can expect them (daily, weekly, etc.).
    • Be sure the roofing company service representative can reach you at all times while reroofing or completing roofing repairs. The work will move along more smoothly if your roofer can reach you for any necessary updates, questions or work authorizations.
    • Return your roof contractor’s calls promptly to keep the roofing installation and repairs on schedule.
    • Pay for the roofing work in the agreed upon timeframe.

    Why would you want to be a good customer? Roofing contractors in Marin County appreciate customers who are straightforward, honest and easy to work with. Your good customer behavior sets the tone from your end and creates an environment conducive to a good relationship. Things may very well go smoother and any problems may be more easily resolved.

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Check The Work
Compare the Completed Roofing Work Against Your Contract

Once your roof repairs or reroofing is completed, most good roofers in Marin County will give you a written invoice that lists the completed work. This invoice may include:

  • The name, business address and state license number of the roofing company.
  • A detailed list of all roofing work performed.
  • An itemized list of products and materials 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.
  • Ask your Marin County roofing contractor to walk through the job with you and show you the repairs and reroofing installation. Check the completed work against the invoice. Ask any final questions about the completed work and additional information on maintaining your new roof.
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Written Warranties
Get Written Warranties from Marin County Roofers

Before your roof contractor leaves the premises, ask for written proof of any warranties and guarantees they offer. Not all roofers back up their work. But if the roofer you’ve chosen does guarantee their work, they should give you the details in writing, including:

  • The roofing company name and physical address.
  • 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 when filing a warranty claim, including whether you have to pay for labor or owe a prorated amount for repairs.
  • The terms and limitations on your new roof warranties.
  • If the roof warranty coverage is transferrable to the new owner if you sell your home.
  • All exclusions must be in writing to be valid.
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Top 10 Requests
Top Service Requests of Roofing Contractors in Marin County

The top 10 requests for new roofs and roof replacements listed below are available in the larger Marin County cities of Novato, Mill Valley, San Rafael, San Anselmo, Larkspur, Corte Madera, Sausalito, Tiburon, Ross and Fairfax and all of the smaller towns and West County. See the paragraphs below for the definition of each term.

Roof Repairs
Common roof repairs in Marin County are usually required to fix improperly installed gutters, roof leaks, missing or damaged shingles, roof flashing leaks, skylight flashing, roof valley flashing, roof ridge vent damage, gutter problems and leaking nail holes. Most roofing contractors in Marin County provide emergency roof repairs and roof maintenance, including 24-hour emergency roof repairs.

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, overlapping roof shingles. Most are laid in rows with the top shingles overlapping the lower shingles. Roofing shingles come in a variety of colors and styles, and are typically asphalt shingles or composite shingles. Roof shingles are also available as metal shingles, stone shingles, stone-coated metal shingles, tile shingles or wood shingles.

Flat Roofing Repair & Flat Roof 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.

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

Installation for Metal Roofing
Metal roofing is a popular choice for its durability, flexibility and number of colors and styles. Once known as 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 panel roofs. Metal roofing is weather resistant, lightweight and portable and is often used on residential buildings, commercial buildings 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 the appearance of slate shingles, wood shingles and tile shingles with the strength and durability of steel roofing.

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 Marin 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 are a complete replacement of existing roofs. New roofs are recommended for existing homes that have leaking 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 is the roof removal and reroofing of an existing building. 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 & Rubber Roof 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.

Top 10 Roofing Brand Requests in Marin County
The following roofing brands are some of the most popular roofing manufacturer products installed in Marin County, including in the major cities of Corte Madera, Tiburon, Sausalito, San Rafael, Novato, Mill Valley, San Anselmo, Larkspur, Fairfax and Ross.

  1. GAF Roofing (also known as GAF-ELK)
  2. Sika Sarnafil Roofing
  3. Galvalume Metal Roofs
  4. Ondura Roofing
  5. Firestone Roofing
  6. Duro-Last Roofing / DuraLast Roofing
  7. Decra Roofing
  8. Monier Roof Tiles
  9. Gerard Roofing
  10. CertainTeed Roofing
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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
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

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

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

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

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

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

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

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

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?
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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