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 Drainage Companies Rated Highest in Quality?

Photo: Westward Builders, Inc. (2011)

You are the customer. If your goal is to choose a drainage company that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified drainage 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 drainage 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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Terry Keast is a lifelong veteran of the construction industry and owner of Westward Builders, Inc., a Diamond Certified company since 2008. He can be reached at (415) 459-2130 or by email.

Terry Keast

diamond certified contributor profile and expert article

Terry Keast: Born to Build

By Matt Solis, Editor

SAN RAFAEL – When Terry Keast was a boy, he looked forward to spending every summer swimming in the local dam with his friends. But during the summer of his 14th year, something happened as he made his way to the dam that would alter the course of his life: he walked past a construction site. “We passed this site every day on the way to go swimming and I thought to myself, ‘You know, I’d rather be working,’” he remembers. “One day I went up and asked them for a job, which they gave me—hauling logs and doing labor work for $1.25 an hour. I was so happy to be working while my friends were fooling around at the dam.”

Terry spent the next several years working part-time for other Marin County contractors, and by the time he was a junior in high school, his boss wanted him to make a serious commitment. “He said, ‘Can’t you get out on a work experience program or something? I need you here more often!’ I went to see the Dean of Boys and he told me there wasn’t any work experience program for juniors, but my boss talked to him and he ended up bending the rules. From then on, I went to five periods of school before noon and then went to work for the rest of the day.”

After he graduated high school, Terry started working full-time and eventually made his way through the ranks of the construction industry, first as a laborer, then as an apprentice, carpenter, lead man, trim foreman and general foreman. After working on single-wall construction houses in Tamalpais Valley, he found the niche that would lead him into the rest of his career. “In single-wall construction, the foundation has to be perfect or else everything shows up dramatically in the exterior and floor boards,” he explains. “The foundation of one house was a foot out of square, and I told my boss I didn’t want to work in those kinds of conditions. I had a background in earthwork from a contractor I used to work for as a teenager, so when I told the boss I was going to handle the foundation work from now on, he said fine. I did that for quite a while until I left to start my own company. That was 38 years ago!”

In 1995, Terry decided to leave general construction behind to focus solely on foundations and drainage/earthwork/sitework/structural repairs. “I was frustrated by the inability of the industry to meet the demands for earthwork, concrete, waterproof membranes and drainage, so I decided to specialize in those services so I could provide them correctly,” he explains. “If the foundation is off on a building project, everything is off.”

A Bay Area resident since he was three years old (he was born in Washington), Terry says he finds comfort in the familiarity and idyllic beauty of the region. “We’re close to the ocean, the desert, skiing and lakes. When you add the food and entertainment, there’s nothing missing in the Bay Area. It’s a fantastic place to live.”

The temperate weather and natural landscapes of Northern California are ideal for Terry’s two favorite hobbies: golf and riding motorcycles. “I’ve been playing golf for about 25 years, and I play one and a half rounds a week, sometimes two. I also own two motorcycles. In fact, the first thing I bought when I saved up my money from that first job when I was 14 was a 1948 BSA Gold Star. It was single-cylinder bike with a gigantic flywheel and knobby tires, and I paid $75 for it.”

Terry’s passion for construction work has never waned since that summer day when he walked past the construction site and was fascinated by what he saw, and he says he continually finds new ways to get excited about the industry in which he’s spent his entire life. “I like the foundation business because it’s the only one the big-box stores can’t take away,” he says. “I never went into the army, I never sold vacuums, I never did anything else—I’ve always loved this industry.”

Ask Me Anything!

Q: What’s your favorite sports team?
A: I’m a Giants and 49ers fan, but my wife is the real sports person. I do yard work until I hear her screaming, then I go in and watch the replay.

Q: What’s your favorite type of music?
A: I love all music, but I don’t like synthesized sound. I believe music must be played by a musician, not equipment. My mother sang and played the piano, my grandfather could play any instrument, and my brother plays bass in a band called Firewheel. We go to his gigs to dance and have fun.

Q: If you could immediately master an instrument, what would you choose?
A: Saxophone—it has a deep vibration and it’s the sexiest instrument.

Q: Do you have a favorite type of food?
A: I love seafood. We ride out to Marshall and have lunch at some good seafood places.

Q: Ever read a book more than once?
A: I like to read books that are part of a series, like Vince Flynn’s series about Mitch Rapp.

Q: What advice would you give to a construction newcomer?
A: Never think inside the box, never take no for an answer, and there are no problems, only solutions. If you take what people in this industry tell you for gospel, you’ll never make it.

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How to Reduce the Impact of Water on Your Home


SAN RAFAEL — In many cases, it’s not actually water that hurts a building the most, but rather the gas that results from water. Moisture builds up underneath some houses due to “capillary action,” which means the water comes up from… Read more

Expert Video Tip

Video: Caring For Your Drainage System

Complete Video Transcription:

SAN RAFAEL — Host Sarah Rutan: Maintaining the exterior of your home can be tricky if you aren’t sure what to look for. Today we’re with Diamond… Read more


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  • Cemex

  • Curecrete

soakaway drains
fin drains
dispersal drains
trench drains
slot drains
land drains
French drains
land grading
dry creeks
collector drains
linear drainage systems

drainage system repairs
storm drainage system solutions
sustainable drainage system solutions
underground drainage system installation
yard drainage system installation
rainwater drainage
surface drainage & grading
foundation drainage system installation
residential drainage services
commercial drainage services
land drainage 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


The following agencies and associations will have more information about home drainage solutions, local drainage companies and finding and installing the best water drainage systems for your property.

Association of California Water Agencies (http://www.acwa.com/)
California Stormwater Quality Association (http://www.casqa.org/)

Plastics Pipe Institute (http://plasticpipe.org/)
US Society of Irrigation and Drainage Professionals (http://uscid.org/)

Know What You Want
Know What You Really Want and Need from Marin County Drainage Companies

Before you start looking for a water drainage provider in the cities of San Rafael, San Anselmo, Novato, Larkspur, Mill Valley, Corte Madera, Tiburon, Sausalito, Fairfax, Ross and Belvedere, or for a drain system company in Marin County, think about some specific drainage system questions you may have.

Get some thoughts down on paper. Maybe you are mostly concerned with the drain system cost, or the quality of the water drainage services. You may want someone to take extra time explaining drainage system options.

Being precise about your drain system needs will help you measure the responses of water drainage providers. Here are some sample questions about drainage systems:

  1. Do you want a Diamond Certified drain system company that is rated best in quality, has random customer survey results, and is backed by the Diamond Certified Guarantee?
  2. How long has the drain system company been in business?
  3. How does the drain system company set prices for a drain system or drain system repairs?
  4. Does the drain system provider have an outstanding reputation with Marin County drain service customers?
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What To Ask In Person
What to Ask Marin County Drainage System Representatives at the Location

You may decide to go in person to some drain system companies in San Rafael, Larkspur, San Anselmo, Mill Valley and Novato and other areas of Marin County. Questions like the following may help you judge drain system providers:

  1. What is the drain system work likely to cost, and what could cause those amounts to be greater than expected?
  2. How likely is it that the drain system service process will be without unexpected costs or delays?
  3. What exactly will take place in the anticipated drain system service process?
  4. How should we be in contact during the drain system work?
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  • What To Ask References
    Questions for Previous Drainage System Company Customers in Marin County

    How can you know that customers of a particular drain system service in Marin County have actually had good drainage system experiences? Have particular water drainage companies really satisfied their customers?

    That’s very important to know about drain system companies, probably the most important thing. The answer requires reliable, independent information on the drain system company.  Diamond Certified drain system companies give drainage system customers a big advantage in Marin County and the greater Bay Area. You can be sure of quality with Diamond Certified drain system companies. Consider the opportunity to read word-for-word answers from lots of random drain system customers in Marin County. You won’t get misleading customer satisfaction info on drainage systems, because you’ll have the researched experience of many drain system customers. And you will have the Diamond Certified Performance Guarantee on your drainage system purchase.

    But if you don’t choose Diamond Certified drain system providers, check the other drainage system references yourself, and don’t be careless. A given drain system company may give you customers you can talk to. But that’s not like reading random comments of drainage system customers from the Diamond Certified ratings process. That’s because other water drainage companies may just give you customers with good experiences and keep you away from those that have had trouble with the drain system company.

    If you do call non-Diamond Certified drain system customers, get some recent customers (to avoid the drainage system company selecting only satisfied people). Ask a few general questions about the water drainage company and some specific questions about the drain system process.  Questions about drainage system work could be like these:

    1. What drain system work did you have done, and what did it cost?
    2. Did you feel good about the overall drainage system work process?
    3. Were you okay with the time it took to have the water drainage work done?
    4. Were there any unpleasant surprises in the drain system work process?
    5. Did the drain system contact person treat you well and explain things fully?
    6. Was the drain system cost reasonable, and close to the water drainage cost you had expected?
    7. What parts of the drainage system process were done particularly well by the drain system company?
    8. Would you go back to the water drainage company?
    9. Do you recommend this drain system company?
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  • Review Your Options
    Find and Hire a Trustworthy Drainage System Company in Marin County

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

    You may feel you can make a drain system company choice at this point.

    Before you do though, think about these issues for drainage system services:

    1. Can the drain system company you’re looking at in Marin County do the really important things, providing high-quality, courteous, and reasonably priced drainage system service?
    2. Will the drainage system provider give you precise information and treat you fairly?
    3. Is the drain system contractor rated highly by water drainage customers in Marin County?

    Find and Contract a Good Drainage System Company in Marin County or the Greater Bay Area, Including a Drain System Provider in the Smaller Cities of Marin City, Marinwood, Marshall, Mission Rafael, Muir Beach, Muir Woods, Nicasio, Olema, Point Reyes Station, and Ross
    A final question in choosing a drain system company in Marin County could be this one: do you have good evidence to believe the drain system provider will meet your specific needs for the water drainage work process?

    Keep in mind the value of reading random customer satisfaction info available for prequalified and guaranteed Diamond Certified drain system companies.

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  • How To Work With
    Before you Hire: Consider How to Get the Best Drainage System Companies in Marin County

    California drain system contractors are all licensed by the Contractor State Licensing Board, but you want to know whether the drainage system provider you choose will be the best fit for your water drainage work process. All Diamond Certified drain system companies have been checked in advance for high quality, in such areas as high random customer approval ratings, customer-friendly practices, and customer-satisfaction principles.  If you don’t choose a Diamond Certified drain system company in Marin County, you should search carefully yourself for a water drainage contractor that will truly meet your drainage system needs.

    Drain system companies in the larger Marin County cities of Larkspur, San Rafael, Mill Valley, San Anselmo and Novato may save you more on drainage system work than can other water drainage contractors.

    Now that You Have the Drainage System Contractor, Get Accurate Drain System Information in Marin County
    Be sure you understand the drain system cost you are considering, and the details of the drainage system financing if any. You should be comfortable with the drain system facts. Ask for further drainage system information as needed, and make notes on the responses.

    Ways to Make the Drainage System Process Easier and Go More Smoothly when you have Water Drainage Work Done
    Remember to read the drain system estimate or contract carefully to find out exactly what the drainage system will cost, including the total with any financing cost added.

    Sign an Estimate or Sales Contract with a Drainage System Contractor in Marin County, Including a Drain System Company in the Larger Cities of Larkspur, San Rafael, Mill Valley, San Anselmo and Novato
    Review the drain system company agreement. Take plenty of time to read the drainage system  estimate or contract carefully, looking particularly for anything extra or unusual you may have agreed upon with the water drainage company.

    When you’re satisfied with the drainage system estimate or cost, and any financing with the Marin County drain system contractor, sign the water drainage agreement.

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  • Be a Good Customer
    How Can You Be a Good Drainage System Customer

    Good drain system service in Marin County is the responsibility of the drainage system contractor.  But you have a part in the water drainage work process also. Consider these ideas:

    • Be simple and direct with the drain system company.
    • Be friendly and polite with the drainage system providers.

    It works for you and for the drain system contractor when you take the time to be a good drainage system customer. Marin County drain system companies work well with quality water drainage customers.

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Check The Work
Check the Drain System Work Against Your Sales Contract

Make sure everything about the drain system you are purchasing is as you expected, and that you have all the phone numbers or e-mail addresses you may need for working with the drainage system contractor.

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Written Warranties
Get Warranties from Marin County Drainage System Contractors

Confirm warranties with the drain system contractor before concluding. You should have:

  • The drain system contractor ID number.
  • A detailed description of what’s covered by the drain system warranty, including reservicing or money back on the drainage system.
  • Instructions for taking action on the drain system warranty.
  • The time period covered by the drain system warranty
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Top 10 Requests
Top 10 Service Requests

Drainage services in Marin County involve different needs. Here are some common issues in water drainage:

Drainage System
The drainage system is the set of parts that allow water to drain properly out of the soil on a building site.  A good drainage system will use the right materials and be designed for adequate drainage volume and durability. Routine inspection and maintenance are also important to drainage system function. Common parts of a drainage system include drainage pipe, geotextiles for filtering soil out of the system, drainage pipe couplings, catchbasins and manholes for collecting water drainage, drainage pipe anchors, and drainage stone.
Drain Pipe
Drain pipe is a fundamental part of a drainage system. Plastic drain pipe is common because it is cheap and easy to use. Drain pipe may be flexible or rigid, and will differ by the thickness and shape of the drainage pipe walls. Flexible drain pipe has the disadvantage of allowing low points that could block water drainage. The cheapest drain pipe is thin and corrugated highly flexible drainage pipe, which can fail under the weight of construction machinery or soil, and may not allow good watertight drainage connections. Thicker corrugated pipe can improve drain pipe performance.

Drainage Pipe
Drainage pipe is likely to be made of plastic, and manufactured from one of three materials: polyvinyl chloride (PVC), polyethelene (PE), or high-density polyethelene (HDPE). Plastic drain pipe may be rigid or coiled. Rigid drainage pipe is sold in shorter lengths and requires more connections but is stronger, while coiled drain pipe requires fewer connections but may cave in or buckle under pressure. Plastic drain pipe also comes in perforated or nonperforated (tightline) drainage varieties. Perforated drain pipe allows water drainage to enter through holes or slots, and can carry more water as the size of the perforations increase.

A drain will be especially important for property that has an underwater spring. Drains may be needed for land that has a lot of clay in the soil or has bedrock rather near the surface, which can cause water to drain sideways in the soil rather than moving downwards. A swampy yard under heavy rainfall is likely to require a drain to prevent water drainage from constantly entering the basement. Drain types include French drains, trench drains (another name for French drains), soakaway drains, and slot drains.

French Drain
A French drain, or trench drain as it is also known, is extremely useful and common for relieving drainage problems from a slope above your house or poor soil drainage because of dense subsoil with large amounts of clay. The French drain is a set of 4-inch or 6-inch perforated drain pipes parallel to the surface in gravel-lined trenches 2 feet deep in the high ground around the house. The trench drains become horizontal to open onto the surface of the slope around the house, giving soil water drainage a sort of gutter for moving rapidly past and away from your house.

Drain System
A drain system can involve much more than drainage pipes. A drain system may include geotextiles, drain pipe couplings, drain pipe anchors, and drain gravel. Geotextiles are drainage fabrics that filter soil out of the water drainage to keep the drain pipes free. Drain pipe couplings are watertight joints between pieces of pipe, and common spots for drain system failure. Drain pipe anchors stabilize drain pipes against the enormous pressures resulting from water drainage moving downhill or around a bend. Drain gravel is free-draining material placed next to perforated drain pipe.

Water Drainage
Downspout drain pipes may not always be enough to keep water drainage off your roof from ending up in your basement. A storm may dump over a thousand gallons of water on your roof. To keep all of that drainage out of your basement, you may need to have underground downspout diverter drains placed. These drains will be a little over a foot deep, made of 4-inch rigid sewer pipe that is not extremely thick but not of the extremely flimsy drain pipe type. The drain pipe should not be buried in the noncompacted soil next to the foundation where the soil could could bend the drainage pipe.

Drainage of water toward your foundation is a fact of living with rainfall. Most homes are on a slope, a prescription for foundation drainage. And foundations are surrounded with backfill soil, which contains lots of air, which wants to fill with drainage water. To keep water drainage away from your foundation, you need to a good drain next to it. Drain tile installed next to the foundation footer provides a way for the water to drain properly.

Drains can prevent ponds from forming in your yard from water drainage. The typical building code requires a minimum decrease in elevation of 6 inches over the ten feet next to your house. This may not be enough slope to keep water away from your foundation. One easy way to keep from having to regrade around your home is to use a French drain, also known as a trench drain. A French drain is made of 4-inch perforated drainage pipe laid about a foot and a half deep around your house, with a gravel bed and a layer of gravel on top. The French drain follows the slope of the yard until it gets past the house, where it levels out and seeks daylight.

Drainage Systems
Keeping the water drainage away from the foundation is not the work of a single part, but the result of a complete drainage system. A French drain, also known as a trench drain, made of perforated drainage pipe surrounded with gravel in a shallow trench can be a very important part of that drain system. The drain system should also protect the foundation by drain pipe methods for moving away water drainage from the roof, the driveways, and the patio. The foundation should also be protected by preventing plantings and mulch that could block drainage near the house, and perhaps by a tile drain at the footer.

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Glossary Of Terms
Glossary of Residential Drainage System Terms

Below are some drainage terms which may be of help in understanding drain systems and communicating with your local drainage contractor:

A chamber for trapping soil and other drainage material below the drain outflow point.

Also known as: drain, drains, drainage, drain system, water drainage, drainage system, drainage systems

A pathway to drain water drainage properly off of and out of the soil. Drains are most often installed by licensed drainage contractors who can measure the specific angles, depth and other job specifics to install the most effective drain system for the property.

Also known as: drain, drains, drainage, drain pipe, drain pipes, drain system, water drainage, drainage pipe, drainage system, drainage systems, French drain, trench drain, soakaway drain

drain system
A set of channels, drains, ditches and similar runoff pathways for carrying water drainage off the surface and out of the soil.

Also known as: drain, drains, drainage systems, drainage, drain pipe, drainage pipe, drain pipes, drain system, water drainage, drainage system, French drain, trench drain, soakaway drain

The total process by which water drainage flows off the surface and drains out of the ground to reach streams, rivers, and man-made drains.

Also known as: drains, drainage, drain, drain pipe, drain pipes, drain system, water drainage, drainage pipe, drainage system, drainage systems, soakaway drain, French drain, trench drain

drainage ditch
An open man-made drain designed to carry water drainage from the surface or the soil.

Also known as: drain, drains, drainage, drain system, drainage system, water drainage, drainage pipe, drainage systems

drainage system
A residential design made to drain away surface water and groundwater drainage through such devices as downspout diverter drains, French drains, and trench drains.

Also known as: drain, drainage, drain pipe, drain pipes, drains, drain system, water drainage, drainage pipe, trench drain, drainage system, drainage systems, French drain, soakaway drain

A drainage slope, particularly the minimum required drainage slope of 6 inches in 10 feet to drain the ground around your house.

Also known as: drainage systems, drainage, drain system, water drainage, drainage system

open drain
A ditch or surface channel drain for water drainage.

Also known as: drain, drainage systems, drains, drainage, water drainage, drainage pipe, drainage system, drain system,

plastic drain pipe
Drainage pipe made of polyvinyl chloride (PVC), or drain pipes made of polyethylene (PE) or high-density polyethylene (HDPE).

Also known as: drain, drains, drain system, drainage, drain pipes, water drainage, drainage pipe, drainage system, drainage systems, French drain, drain pipe, trench drain, soakaway drain

Related to the banks of river or stream water drainage.

Also known as: drainage, water drainage, drainage system, drainage systems

Water drainage that doesn’t drain into the soil, but runs along a surface or through a drain pipe.

Also known as: water drainage, drain, drains, drainage, drain pipe, drain system, drainage pipe, drainage system, drainage systems, drain pipes

Settling out of soil or other suspended material in a drain pipe or elsewhere within a drainage system.

Also known as: drains, drainage, water drainage, drain, drainage system, drainage systems

A drain pit for surface water drainage to be absorbed into the earth.

Also known as: drain, drains, drainage, drain system, water drainage,drainage systems, soakaway drain

subsurface drain (SSD)
An underground pervious drain pipe for collecting water drainage from the soil, such as a French drain or trench drain.

Also known as: drain, drains, drainage, drain pipes, drain system, drainage systems, water drainage, drainage pipe, drain pipe, drainage system, French drain, trench drain, soakaway drain

surface runoff
Water drainage that runs along a surface, as opposed to water that drains into a surface.

Also known as: drain, drainage, drain system, drainage system, drains, water drainage, drainage systems

surface water
Water drainage that goes directly to the drainage system, and does not drain through the ground.

Also known as: drainage, water drainage

tile drain
Underground, perforated plastic, clay, or concrete pipe to drain water drainage from the soil.

Also known as: drain, drains, drain pipe, drain pipes, drain system, drainage, water drainage, French drain, drainage pipe, drainage system, drainage systems, trench drain

tile drainage
A set of tile drains for water drainage.

Also known as: drains, drain, drainage, drain pipe, drain pipes, drain system, water drainage, drainage pipe, drainage systems, drainage system

underground drain
A buried drain pipe with slots or holes for collecting water drainage from the soil, such as a French drain or trench drain.

Also known as: drain, drains, drain pipe, drainage systems, drain pipes, drain system, water drainage, drainage, drainage pipe, drainage system, French drain, trench drain

water table
The underground water drainage level to which surface water will drain.

Also known as: drains, drainage, drain system, water drainage

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Frequently Asked Questions
FAQ for Drainage Experts in the Bay Area and Beyond

Q: Why choose a Diamond Certified drain system company?
A: Because Diamond Certified drainage companies end the guessing game by offering a choice of top-rated drainage system providers who have passed the most in-depth rating process. Most drainage companies can’t meet such a high standard, which means only local drain system providers rated Highest in Quality earn the Diamond Certified award. American Ratings Corporation also looks at every Diamond Certified drainage company with in-depth and ongoing research and ratings. And your drain system purchase is always backed up by the Diamond Certified Performance Guarantee. You can feel confident choosing a Diamond Certified drain company for your home drainage needs.

Q: What is a drain system?
A: A drain system is a set of parts for getting water drainage off the surface, out of the soil, and into the watershed. Important considerations in drain systems are the use of drainage materials that will meet drain volume and durability needs. Common parts of drainage systems are drain pipes and drain tile, drain gravel, drain pipe couplings, drain pipe anchors, geotextiles, and catchbasins.

Q: What is a designated drainage exit?
A: A drainage exit is a place designated by your city’s stormwater drain plan to receive rainwater runoff. The drain exit could be a sewer drain or a sloped drainage area.

Q: What should I know about different kinds of drain pipe?
A: Thin, corrugated drain pipe is cheap, but is not as strong as thicker drain pipe. Thinner drain pipe may develop low points, and may allow drain leakage at connections. Rigid drain pipe is stronger and protects better against drain problems from crushing and kinking. However, rigid drain pipe will require more drain couplings.

Q: Will a French drain system or trench drain solve problems with a swampy yard and a basement that’s always wet?
A: Absolutely. A French drain, also known as a trench drain, is made of perforated drain pipe surrounded with drainage gravel in a trench about 2 feet deep. A French drain has been the miracle cure for drainage problems around thousands of homes, and will solve many drain system problems with the yard and basement.

Q: Does the French drain or trench drain system require a geotextile filter sock to go around the drain pipe or line the trench?
A: Not necessarily, and probably not. The geotextile is sometimes used to keep silt out of drain gravel and perforated drain pipe, but is not necessary unless fluffed dirt or large amounts of dirt are used on the top of the trench drain system.

Q: Will a drain system solve the problem of a muddy drainage area between houses where grass won’t grow?
A: A French drain (trench drain) or other drainage system solution may keep the area drier, but there could also be a shade problem that is affecting grass growth in addition to the drainage problem.

Q: Will a French drain (trench drain) need to be dug up to remove blockage?
A: Digging up a French drain system might sometimes be necessary, if for example the drain pipe has been smashed. Often however, a snake will work to clear the drain pipe, or water under high pressure may restore proper drainage.

Q: Do I need more than downspout drains and splash blocks to keep stormwater drainage from my roof out of my basement and crawlspaces?
A: Underground downspout diverter drain pipes made of 4-inch sewer line may be a good drainage system solution. These diverter drain pipes can be fairly shallow, and will drain water away from forming drainage pools around a few downspout drain pipes.

Q: Is it possible to save and reuse drainage system water?
A: It could be, if you have the space for drain system tanks below or above ground, and if there are not downstream issues with water drainage rights.

Q: What’s the best way to find a good drain system company?
A: An ideal way to get good drain system and drain pipe service is to choose a Diamond Certified drain system company. Diamond Certified water drainage providers offer advantages that are hard to beat: highest scores on random customer surveys, customer-friendly business practices, customer satisfaction principles, mediation, and great guarantees on drain system services.

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