San Mateo – Roofing - Metal

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(408) 622-0450
(650) 453-8959

Serving Santa Clara, San Mateo and Alameda Counties including San Jose, Sunnyvale, Daly City, Redwood City, Fremont and Oakland.

Services include roof repairs, roof installation, metal roofing, free estimates and energy-efficient roofs . Brands include Garard, IB Roof Systems and Owens Corning...
License 787221 | DCID4084560200

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Researched Articles
Why Trust Diamond Certified Metal Roofing Companies Rated Highest in Quality?

You are the customer. If your goal is to choose a metal roofing company that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified metal 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 metal 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
Choose a Metal Roofing Contractor in San Mateo County

Metal roofing in residential homes is one of the fasting growing roofing options today. Metal roofing offers many benefits for homeowners and provides lasting value. Other roofs diminish in value as the years go by. However, metal roofs provide lasting benefits. These benefits include:...

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Metal roofing in residential homes is one of the fasting growing roofing options today. Metal roofing offers many benefits for homeowners and provides lasting value. Other roofs diminish in value as the years go by. However, metal roofs provide lasting benefits. These benefits include:

  • A performance record of 50 years or more
  • Fire resistance
  • Energy efficient so your home stays cooler in the summer, warmer in the winter
  • Attractive styles to match any home or neighborhood
  • Panels that interlock for maximum wind resistance
  • Preserves structural integrity and life due to low weight

Advantages of a Metal Roof for Your San Mateo County Home
A metal roof for your home brings many advantages. These advantages include:

  • There are many intricately designed roofing profiles to choose from due to unique forming methods
  • A wide range of colors are available that meet today’s design trends for homes
  • Warranties often transfer to all future owners with no transfer fee
  • 95% recycled content is available
  • Flashing designs are available which include the “no-clog” valley system
  • A PVDF powder coating is available which allows for custom colors and blends
  • A metal roof is easy to install because it comes in multi-shingle sections or in sheets.
  • Metal roofing reflects radiant heat from the sun. Due to a dead-air space between the metal and roof deck, metal roofs are energy efficient.
  • Most metal roofing materials can be installed without presenting a leaking potential on gently pitched roofs.
  • Weights are as low as 0.45 pounds per square foot on metal roofing
  • The fasteners are concealed, adding to the beauty and weathertightness of your home

Benefits of Choosing Metal Roofing for Your Home in San Mateo County
Metal roofs are tested and proven to endure nature’s forces such as wind, snow, and rain better than any other type of roofing. They also last longer than any other roofing system. Metal roofs in San Mateo County, including the larger cities of Pacifica, East Palo Alto, Menlo Park, Foster City, and Burlingame, are also better for the environment. A home is an expensive investment that you want to protect. A metal roofing system is the most secure way to protect that investment. For example, many metal roofs come with a 30 year unconditional warranty on the finish alone. A 50 year warranty is often provided for defects.

In the past, asphalt based products that needed to be replaced every 12-20 year and were not good for the environment were the only options available.

By the same token, cement based materials require extra bracing in order for the weight of the materials to be supported. Oftentimes, cement based roofs snap apart when you walk on the roof or during a wind storm. They are expensive and difficult to install.

Metal roofing has none of these disadvantages yet all of the advantages of previous roofing options plus so many more!

People Ask These Questions Regarding Metal Roofing in San Mateo County
Below are several questions many people ask when considering a metal roofing system.

How does a metal roof compare to other roofs in price?
Because metal roofs are a premium product, they cost a little more than a asphalt or fiberglass shingle roof that comes with a standard 20 year warranty. However, a metal roofing system can cost considerably less than high-end architectural shingles that are becoming more popular.

Will hail or wind damage my metal roof?
Because metal roofs are tough, they are highly resistant to damage from hail and wind. In fact, metal roofing products have the highest impact resistance and hail rating granted by insurance commissions. They are also tested to withstand hurricane force winds as high as 120 mph. A reduced rate for metal roofs is provided by some insurance companies.

Can I walk on a metal roof?
You can walk on a metal roof but you definitely want to be careful—just as any roofing system.

How does a metal roof compare with other types of roofing in weight?
A metal roofing system weighs less than one-third the weight of other roofing systems such as asphalt or fiberglass. They are 75% lighter than concrete, clay, or slate.

Will my metal roof rust?
Protected by layers of metallic and polymer coatings, metal roofs outperform corrosion resistance of other coated metals. Many metal roofing systems have warranties of 50 years.

Will the color fade on a metal roof?
Metal roofs are painted with high-performance polymers that include exceptional weathering properties. You might notice a slight change in color in time due to the settling of airborne contamination. However, simply washing your metal roof with a garden hose keeps the roof looking like new.

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Know What You Want
Questions to Consider Before Choosing a Metal Roofing Contractor in San Mateo County

Before choosing a metal roofing contractor in San Mateo County, including the larger cities of Daly City, San Mateo, Redwood City, South San Francisco, and San Bruno, consider several different factors carefully. Write down everything that you are looking for in a metal roofing contractor before you begin your research. Following are several questions to carefully consider before you make your final choice regarding a metal roofing contractor in San Mateo County....

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Before choosing a metal roofing contractor in San Mateo County, including the larger cities of Daly City, San Mateo, Redwood City, South San Francisco, and San Bruno, consider several different factors carefully. Write down everything that you are looking for in a metal roofing contractor before you begin your research. Following are several questions to carefully consider before you make your final choice regarding a metal roofing contractor in San Mateo County.

  1. Do I want a Diamond Certified company that is rated best in quality and backed by the Diamond Certified Performance Guarantee?
  2. What is the projected time frame for installation of a metal roof by a metal roofing contractor?
  3. What is my budget?
  4. What structure am I having a metal roof installed on?
  5. What personal and professional characteristics would I like my San Mateo County roofing contractor to have? (These may include honesty, cleanliness, good communication skills, reliability, etc.)
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What to Ask on the Phone
Questions to Ask When Talking with a San Mateo County Metal Roofing Company on the Phone

Before making a final decision regarding a metal roofing contractor, be sure to call several different metal roofing contractors on the phone. Have a list of questions available so that you can write down the answers that the metal roofing contractors give you while you are speaking with them. Below are several questions to use as a guide during your discussion....

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Before making a final decision regarding a metal roofing contractor, be sure to call several different metal roofing contractors on the phone. Have a list of questions available so that you can write down the answers that the metal roofing contractors give you while you are speaking with them. Below are several questions to use as a guide during your discussion.

  1. Has your company earned and maintained a Diamond Certified rating? Will your metal roofing company provide a written estimate?
  2. How long have you been a metal roofing contractor in San Mateo County?
  3. Does your metal roofing company have current workers’ compensation and liability insurance?
  4. How many metal roofs have you installed this year?
  5. Do you have bonding capabilities?
  6. Will you obtain the re-roofing permits that are required?
  7. Will your metal roofing company provide a written estimate?
  8. Who is liable if your equipment damages my property?
  9. Do you have bonding capabilities?
  10. Are you a licensed roofing contractor?
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What to Ask in Person
Questions to Ask When Talking with a San Mateo County Metal Roofing Contractor in Person

Once you have called several different metal roofing contractors in San Mateo County, including the larger cities of Pacifica, East Palo Alto, Menlo Park, Foster City, and Burlingame, it is time to interview your top selections in person. Below are several different questions to consider asking....

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Once you have called several different metal roofing contractors in San Mateo County, including the larger cities of Pacifica, East Palo Alto, Menlo Park, Foster City, and Burlingame, it is time to interview your top selections in person. Below are several different questions to consider asking.

  1. Does your San Mateo County metal roofing company have a list of former customers as references that I may contact?
  2. What is your track record with customer complaints?
  3. Is payment for the metal roof installation expected upon completion?
  4. Will you provide a written contract that includes payment instructions and total price?
  5. Are you a current member of any local and national roofing associations?
  6. What is your time frame for starting and completing the metal roofing project?
  7. How do you operate: do you have employees or do you hire subcontractors?
  8. How does your metal roofing company calculate pricing for metal roof installations?
  9. What will be the maintenance requirements for my newly installed metal roof?
  10. Who will haul away any old roofing materials or project waste? Is there any extra charge for this service?
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What to Ask References
Interviewing Previous Customers About Their Experiences with a San Mateo County Metal Roofing Contractor

It’s best to select a Diamond Certified metal roofing contractor because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a metal roofing company in San Mateo 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....

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It’s best to select a Diamond Certified metal roofing contractor because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a metal roofing company in San Mateo 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 locate a Diamond Certified metal roofing company within reach in San Mateo County, including the smaller cities of Brisbane, La Honda, Princeton by the Sea, San Gregorio, Palomar Park, and Pescadero, you’ll have to do some research on your own. If you do, it’s wise to call some references provided by your metal roofing company.

Remember, though, that references provided to you by the metal roofing contractor 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 from companies are cherry-picked instead of randomly selected from all their customers. So the contractors will likely give you a few customers to call that they know are satisfied.

If you do phone references on your own, specifically request a list of the company’s 10 most recent customers. This will help avoid them giving you the names of only customers they know were satisfied.

  1. Were you satisfied with the services from (metal roofing contractor name)?
  2. Did the metal roofing contractor keep you up to date with the status of the metal roof installation? Or did you have to call to get information?
  3. If you live in one of the smaller cities such as Millbrae, Moss Beach, Sharp Park, Emerald Hills, Half Moon Bay, Hillsborough, and El Granada, did they charge extra to travel to your home?
  4. Did the metal roofing contractor show up on time?
  5. If you need a metal roofing company in the future, will you consider hiring this metal roofing company?
  6. Did the metal roofing contractor start and finish the work on time?
  7. Would you recommend this metal roofing contractor to your family and friends?
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Review Your Options
Making Your Final Choice for a Good Metal Roofing Contractor in San Mateo County
The Diamond Certified symbol has been awarded to companies that scored Highest in Quality in an accurate ratings process.

Before deciding on the best metal roofing company in San Mateo County for you, it’s important to consider the following questions....

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Before deciding on the best metal roofing company in San Mateo County for you, it’s important to consider the following questions.

  1. Can the metal roofing company in San Mateo County meet your needs when it comes to scheduling, customer service, and experience?
  2. Is the metal roofing company sensitive to your budget?
  3. Does my metal roofing company of choice have a good reputation and excellent references which I have checked?
  4. Does the metal roofing contractor seem professional and knowledgeable?
  5. Does the metal roofing contractor offer a warrantee and satisfaction guarantee to back up their work?
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How to Work With
Sign a Contract with the Metal Roofing Company in San Mateo County

Once the contract is drawn up, it should be signed by both parties: you, the project owner, and the metal roofing company. The contract should protect the interests of both you and the roofing contractor. As a result, it should include the following:...

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Once the contract is drawn up, it should be signed by both parties: you, the project owner, and the metal roofing company. The contract should protect the interests of both you and the roofing contractor. As a result, it should include the following:

  • Company’s name, physical address, mailing address and phone.
  • Payment structure and schedule
  • Detailed description of entire metal roofing project
  • Warranties should be written and the length of time as well as limitations should be covered. Warranties should cover materials and workmanship, and names and addresses of the warrantor. This may include the contractor, manufacturer, and distributor.
  • Who is overseeing project/performing work
  • Project timeline
  • How changes to metal roofing project and/or disputes are handled
  • A clear, concise, and complete description of the metal roofing project, including start and completion dates.
  • Demo, removal and prep cost and procedures
  • Material cost and type of materials used
  • Any oral promises made.

Protecting Yourself with the Metal Roofing Contractor in San Mateo County, including the larger cities of Pacifica, East Palo Alto, Menlo Park, Foster City, and Burlingame
Taking precautions will help protect you and your metal roof investment. It will also increase your chances of success. Consider the following guidelines:

  • Agree to make payments as the project progresses, contingent upon completion of a determined amount of work. This way, if work on the project is delayed, payment will be delayed as well.
  • Do not sign a contract or any document until you have thoroughly read through it and filled in any blank spaces.
  • Do not make final payment until the work completed meets agreed upon specifications and building code requirements.
  • Do not sign a contract that uses vague terms. Make sure that all terms are specific regarding project requirements and the work that will be performed.
  • Don’t agree to finance your project through your contractor. Shop around for better loan terms.

Figure out a Payment Schedule with a Metal Roofing Company from San Mateo County
Once you have negotiated a final price for the roofing project, you should agree to payment terms. You should either pay a portion of the job at certain stages such as after removal of old roofing, once products are delivered, or at the completion of the job, or you should wait until the entire project is completed before making payment.

Time to Let the Metal Roof Work Begin
If you have faithfully followed all of the above steps, you can feel confident that you have hired the best metal roofing company for the job. You have done your research, made comparisons, negotiated for a fair price, and signed a written contract. Now all that is left is for you to sit back and envision how great your home will look once your new roof is professionally installed.

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Be a Good Customer
Being a Trustworthy Metal Roofing Customer in San Mateo County

It's the metal roofing contractor’s responsibility to install quality metal roofs using the best possible installation techniques. But you play a big part in the success of your metal roofing company, too. Here are a few simple steps you can take to be a good customer when hiring a San Mateo County metal roofing contractor....

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It's the metal roofing contractor’s responsibility to install quality metal roofs using the best possible installation techniques. But you play a big part in the success of your metal roofing company, too. Here are a few simple steps you can take to be a good customer when hiring a San Mateo County metal roofing contractor.

  • Be clear and upfront with the metal roofing company in San Mateo County, including the larger cities of Daly City, San Mateo, Redwood City, South San Francisco, and San Bruno. Let them know what you want from your metal roofing company, the long-term outcome you’re expecting and specific ways they can satisfy your expectations.
  • Before you hire a metal roofing company in San Mateo County, restate your expectations and goals, and reiterate to the metal roofing company representative your understanding of the agreement. Most problems with local metal roofing contractors occur because of a breakdown in communication. By being clear about your expectations and theirs, you can avoid most conflicts.
  • Ask your metal roofing contractor if you should call to check on the progress or if he will call you with updates.
  • Be sure your service representative has a phone number where they can reach you at all times while they’re installing your metal roof. The work will move along more smoothly if your metal roofing contractor can reach you for any necessary updates, questions or work authorizations.
  • When your contractor contacts you, return calls promptly to keep the metal roofing installation on schedule.
  • Pay for the metal roof installation promptly.
  • Remember, a friendly smile goes a long way!

Why would you want to be a good customer? Metal roofing contractors in San Mateo 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
Using the Invoice to Verify the Work from the Metal Roofing Contractor

When the metal roofing contractor’s work is completed, most professional metal roofing contractors will give you a written invoice that details the completed work. This invoice usually includes:...

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When the metal roofing contractor’s work is completed, most professional metal roofing contractors will give you a written invoice that details the completed work. This invoice usually includes:

  • The metal roofing company’s name, physical address, and license umber
  • A list of all services performed
  • The total cost of the metal roof installation, including the amount due for labor, if any
  • Any applicable guarantees or warranties provided by the real estate roof inspection company

It’s smart to compare the completed work against the invoice. Make sure that the metal roof installation was completed to your satisfaction. If you have questions about the work that was done, this is the time to ask.

Make sure the following is completed before paying your bill in full:

  • All of the work is finished.
  • There has been a final inspection.
  • The materials and worker’s lien releases have both been received.
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Written Warranties
Written Warranties from Nearby San Mateo County Metal Roofing Companies

Before the metal roofing contractor leaves, confirm any warranties offered by the metal roofing contractor and/or manufacturers in San Mateo County. The written warranty document must detail the following:...

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Before the metal roofing contractor leaves, confirm any warranties offered by the metal roofing contractor and/or manufacturers in San Mateo County. The written warranty document must detail the following:

  • The metal roofing contractor’s name and physical address
  • Your responsibility in the case of a problem with the metal roofing project and what you need to do in order to redeem the warranty.
  • If the metal roofing warranty is transferrable to the new owner in the event that you sell the building in which the contractor has added or replaced metal roofing.
  • The length of time as well as limitations should be covered. Warranties should cover materials and workmanship, and names and addresses of the warrantor. This may include the contractor, manufacturer, and distributor.
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Top 10 Requests
Top Service Requests from Metal Roofing Companies in San Mateo County

Metal roofing companies in San Mateo County provide all services in San Mateo County. Following is a list of the most popular services provided by a metal roofing contractor.

Metal Roof Flashing Installation
This is the installation of sheet metal at any break in a shingled roofline or around fluepipes and sewer vents. It aids in the prevention of leaks by preventing water from entering in holes in the waterproof membrane and between shingles. It is also installed along the eaves and rake-slanted portion of the roof. It helps repel water away from walls....

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Metal roofing companies in San Mateo County provide all services in San Mateo County. Following is a list of the most popular services provided by a metal roofing contractor.

Metal Roof Flashing Installation
This is the installation of sheet metal at any break in a shingled roofline or around fluepipes and sewer vents. It aids in the prevention of leaks by preventing water from entering in holes in the waterproof membrane and between shingles. It is also installed along the eaves and rake-slanted portion of the roof. It helps repel water away from walls.

Metal Roofing Installation
This is the process of installing a metal roof. A metal roof is a roofing system that is comprised of metal tiles.

Metal Roof Panel Replacement
This is the replacement of a metal roof panel. Metal roof panels are sheets of interlocking metal that have a minimum weather exposure of three square feet per sheet.

Residential Metal Roof
This is a metal roof used for a home in a residential area.

Sheet Metal Roofing
This is the process of roofing a building with thin metal that has been rolled into a sheet. Sheet metal has a thickness between foil and plate.

Corrugated Metal Roofing
One of the more popular metal roofing options, corrugated metal is sheet metal which has been rolled or drawn into parallel ridges and furrows for the purpose of additional mechanical strength. Corrugated metal is used for a variety of purposes including roofing, siding, decking, and more. Corrugated metal can be formed into many different shapes and sizes and used for both commercial and residential purposes.

Copper Roof Installation
This is a flexible metal roof covering composed of copper sheets and joined by seams. The copper sheets develop a green coating on their surface called a patina as they oxidize.

Standing Seam Metal Roofs
This type of roof is created through continuous panel length technology. It is specially designed for low slopes and has a high level of performance for both structural integrity and weathertightness.

Metal Roof Coating Application
This is the application of a coating on metal roofs that aids in restoring a metal roof and fixing metal roof leaks. Metal roof coating also prevents rust by forming a seamless protective membrane over the metal.

Metal Roof Repair
This is a reference to finding the source of a leak or problem stemming from a metal roof and repairing it before it causes damage to the interior structure. Metal roof repair includes inspecting and repairing the j-rail, the flashing around pipes, vents, and skylights, all existing rumble buttons, the seams and roof sealant, and any rusted or worn-looking areas.

Top 10 Brand Requests
Many companies are on the market for metal roofing. Following is a list of popular metal roofing companies that have had great success and have a good reputation.

  • GAF Roofing
  • ELK Roofing
  • Atlas Roofing Corporation
  • CertainTeed Roofing
  • Owens Corning Roofing
  • TAMKO Building Products, Inc.
  • Everlast Metal Roofing
  • IB Roof Systems
  • MetalWorks Roofs
  • Duro-Last Roofing
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If Things Go Wrong
The Diamond Certified Performance Guarantee

Diamond Certified companies are backed by the Diamond Certified Performance Guarantee. If the company you’ve hired is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at [email protected] or call 800-738-1138....

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Diamond Certified companies are backed by the Diamond Certified Performance Guarantee. If the company you’ve hired is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at [email protected] or call 800-738-1138.

Ending Conflict with San Mateo County Metal Roofing Companies
The truth is most metal roofing companies in San Mateo County, including the larger cities of Pacifica, East Palo Alto, Menlo Park, Foster City, and Burlingame,  are honest and really do look out for their customers’ best interests. Still, you should know what to do if you are ever dissatisfied with your local metal roofing company service or work.

If you have a complaint or concern about the installation of the metal roof, or the service you received from your metal roofing company, immediately speak with the service contractor. It is often best to resolve problems directly with the metal roofing contractor, minimizing conflict and getting your roofing project done right and on time.

When discussing the issue with the metal roofing contractor, keep these tips in mind:

  • Remain calm and polite.
  • If you do not get a suitable response, consider sending a letter that outlines the problem and how you would like it resolved. Send the letter by certified mail and request a return receipt. If the problem continues, it may be time for outside intervention.
  • Try discussing the problem with a trusted family member or a friend. If that doesn’t help, you may need to seek legal advice from an attorney.
  • Let your metal roofing contractor know that you’re willing to compromise or negotiate a mutually-beneficial agreement.
  • Review the contract specifications with your contractor and attempt to verbally resolve any problems in person.
  • You may legally withhold payment until the dispute is resolved to your liking.
  • You do have the final say. The roofing contractor was hired by you to complete a project that you are paying for, to your specifications.
  • Set a deadline for resolution, and tell the metal roofing installer that you are willing to agree on a mutually-beneficial solution.
  • If you have tried all of the above suggestions and the problem continues, you may need to visit your local builders association (LBA) for assistance.

Document your concerns in writing with the metal roofing company or photograph your metal roofing if you have worries about the quality of the work or the materials used. Write down the metal roofing contractor’s response to your complaints in case you need records for future arbitration.

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Glossary of Terms
Glossary of Terms for Clients of Local Metal Roofing Contractors
Metal roofing repairs and metal reroofing services in Alameda County.
A peaked metal roof feature adds visual interest to a flat roof. Photo: Western Roofing System (2012)

Below are key metal roofing terms and definitions that will give you the information you need to successfully plan and execute your metal roofing installation.

architectural roofing
This system of roofing is non-weight load bearing so must be installed over solid decking. This is also called a “non-structural system.”...

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Below are key metal roofing terms and definitions that will give you the information you need to successfully plan and execute your metal roofing installation.

architectural roofing
This system of roofing is non-weight load bearing so must be installed over solid decking. This is also called a “non-structural system.”

Also known as: roofing materials, roofing material, metal roofing, gaf roofing, gaf shingles, gaf elk shingles, architectural asphalt roof shingles, asphalt shingles, roofing company, roofing companies, roof repair, roofing repair, flat roof repair, roofing contractors, roof contractors, rubber roofing, copper roofing, copper roof

class A, B, and C fire ratings
This is a rating that determines a roofing system’s resistance to fires that originate from sources outside of the building.

Also known as: class c fire rating, class b fire, class b fire extinguisher, class c fire, class b and c fires, class d fire, class d fire extinguisher, classification of fires, fire extinguisher classification, fire safety, fire extinguisher safety, fire and safety, class abc fire extinguisher

clip                                                     
This small metal component is used to secure two pieces of metal together. It is also used to secure metal shingles to solid decking.

closed valley
This is the area underneath the cover where the shingles meet at the miter from adjoining roof planes. Called a valley, this area carries hidden channels of water underneath the roof covering. At times debris becomes trapped in the valleys which results in water overflowing underneath the roofing system.

coil coating
In this coating process, paint is continuously applied to both sides of a moving strip of metal. This entails the entire process by cleaning the metal, pre-treating it with chemicals, adding primer, and, finally, a topcoat.

Also known as: coil, coil coatings, industrial coating, metal coating, powder coating metal, metal coatings, aluminum paint, aluminum coating, coil coating process, powder process, metal coaters

cold roof
This type of roof incorporates “above sheathing ventilation” for the purpose of preventing hot spots on the roof which leads to wintertime ice dams.

Also known as: cold roof design, hot roof vs cold roof, flat roof insulation, flat roof ventilation, cold roof ventilation, roof ventilation, roof insulation, hot roof insulation, cold roof system, flat roof systems, flat roofing, warm roof, warm roof vs cold roof, warm roof construction, preventing ice dams, prevent ice dams

condensation
This is a process that occurs when warm, moist air hits a cool surface. This often occurs in poorly designed roofing systems. The keys to avoiding condensation in roof systems are ventilation, vapor barriers, and insulation.

course
This is a row of metal shingles that run the length of the roof.

decking
The surface installed over the supporting framing members on which the roofing is applied is the decking.

dormer
This framed window unit projects through the sloping plane of a roof.

drip edge
This piece of metal is placed on the eave of a roof for the protection of the underlayment and eave of the roof. It also directs water in the proper direction.

eave
This is the very edge of a roof at the bottom of a roof plane.

Also known as: roof eave, roof eaves, eaves roof, eave roof, eave vents, eave vent, eaves definition, under eave lighting, under eaves lighting, soffits and eaves, eaves and soffits, overhang roof, overhanging eaves, eave overhanging, eave ventilation, eaves ventilation, eaves ventilators

flashings
These components are used to help waterproof perimeters and protrusions in a roofing system.

Also known as: metal roof flashing, metal roofing, metal roofs, sheet metal flashing, sheet metal, sheet metal flashings, metal fabrication, metal fabricators, stainless steel roof, steel roofing, custom sheet metal, custom metal

gable
This is the edge of a roof. The gable runs from the eave to the ridge.

Also known as: gabled roof, gable roof, roof gable, gable roofs, gable end decorations, gable attic vent, shed gable vents, gable trim, gable end trim

galvanized steel
This is carbon steel that includes a protective alloy which is comprised mainly of zinc on both sides of the steel. Various grades of galvanized steel are available. G90 is recommended for applications on residential structures.

Also known as: galvanized steel tubing, galvanized steel tube, galvanized steel sheet, painting galvanized steel, paint galvanized steel, galvanized steel pipe, steel piping, galvanized steel prices, hot dipped galvanized steel, stainless steel, galvanized stainless steel

heat tape
Used to alleviate ice damming, this is an electric cable that helps melt snow near the eaves of a roof.

Also known as: heat tape for pipes, pipe heat tape, roof heat tape, heat tape for roof, gutter heat tape, gutter heaters, heat trace, heat trace cable, electrical heat tape, heat cable, heating cable

hip
This inclined external angle runs from the ridge to the eaves. It is formed by the intersection of two sloping roof planes.

hip roof
This roof contains sloping planes on all sides.

Also known as: hip roof framing, how to frame a hip roof, hip roof calculator, hip roof vs gable roof, types of roofs, roof type, hip rafter, rafter length, hip roof house plans, hip roof shingles, roof construction, hip roof construction, hip roof trusses

hot roof
This type of roof has a completely sealed attic that is not vented. The interior is commonly sprayed with closed cell urethane foam insulation.

Also known as: attic foam insulation, spray foam attic, insulating an attic, cold roof, cold roof design, cold roof system

ice and water shield
This self-adhering membrane is specifically designed for use in areas with heavy rain and snow. It helps prevent leaks and is installed on the underlayment and the first three feet of the roof.

Also known as: ice and water shield installation, ice dams, how to remove ice dams, roofing underlayment, residential roofers, ice & water shield, roofing ice and water shield, roof ice shield, roof sheathing

ice dam
This is created when snow melts on the upper section of a roof surface and then freezes again at the eaves due to the roof surface being colder. Because the water backs up, leaks are created in the roofing system. This can be controlled by insulating and ventilating the attic.

Also known as: roof heating coils, heat tape ice dams, preventing ice dams, how to prevent ice dams, roof ice melt, melting ice dams, roof ice melting dams, ice dam cables, ice dams heat cables, ice dams in gutters, gutter heaters, gutter heat tape, ice and water shield, ice shield, ice dam removal, how to remove ice dams

open valley
This valley-design transitions water and debris off of a roof slope by carrying the water on the top of the roofing systems.

pipe jacks
This refers to flashings made of metal and/or neoprene. It is used to seal around round vents, plumbing pipes, conduits, and other roof penetrations.

Also known as: pipe jack stands, pipe stands, rigid pipe stand, pipe flashing, flashing pipe jack, pipe jack flashing, roof jack, roof pipe jack, roofing jacks, lifting jacks

pitch
This is the slope of a roof plane. It is also referred to as the height of rise over length of run.

ridge
This is the very top section of the roof where the two roof slopes come together. It runs the entire length of the roof.

roof framing styles
This is a reference to the different designs and shapes a roof can take. Hip, gable, and barn style roofs are a few examples.

Also known as: timber framing, timber frame, roof trusses, roof truss framing, home styles, a frame style homes, hip roof house plans, hip roof styles, hip roof construction, wood roof framing, wood framing basics, roof construction, roof construction terms, home framing basics, home roof framing basics

sealant
This is commonly used on joints or cracks in order to help prevent leaks. It should also be used for aesthetic reasons.

siliconized polyester coating
This solvent-based system increases resin stability and coating flexibility. This type of coating is often used on agricultural metal roofs.

starter strip
This is used to begin the attachment of many metal roofing systems. It is used on the left hand edge of the roof on many standing seam systems. For metal shingle systems, it is used at the bottom of the roof.

Also known as: shingle starter, starter shingles, starter row shingles, how to install siding, shingle installation, how to put up vinyl siding, vinyl siding, best vinyl siding, starter shingles, cutting shingles, how to cut shingles, cutting roof shingles, shingles roofing materials, roof shingles materials, vinyl shingle, how to install vinyl, vinyl roofing shingles

stone coating
This type of metal roofing is made from aluminum or zinc coated steel. It is then coated with the same granules as composition shingles.

Also known as: stone coated metal roofing, garage flooring, garage floor paint, pebble stone, epoxy floor coating, natural stone coating, natural stone

structural roofing
This is a reference to metal roofing that provides structural integrity to a building. This type of roofing does not require decking for installation.

Also known as: pre engineered metal buildings, roofing materials, steel buildings, corrugated steel building, steel roofing, steel roof structures, structural metal roof decking, aluminum roofing panels, structural roof panels, corrugated roofing, corrugated aluminum roofing

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Frequently Asked Questions
Frequently Asked Questions for Metal Roofing Installers

Q: Why choose a Diamond Certified metal roofing contractor?...

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

Q: Is a metal roof more expensive than a typical roof?
A: Metal roofing is a premium home product so it costs more than an asphalt shingle roof. However, a metal roof is comparable in price to cedar shake roofing or tile roofing. Also, it is less expensive than a slate roof. The good news is that a metal roof typically comes with a 30 to 50 year warranty. It adds to the resale value of your home and will help you save money on your energy bills.

Q: How can I know that a metal roof will match my home and roofing style in my neighborhood?
A: Today, metal roofing for residential structures is made to look exactly like roofing materials that are commonly used such as cedar shake, asphalt shingle, slate roofing, or cedar shake. However, it’s more durable and stronger. Metal roofing comes in a wide variety of colors, patterns, and styles, so you should be able to match the style of your home and neighborhood.

Q: Is lightning attracted to metal?
A: Lightning is attracted to the highest point. So a metal roof is not more likely to be hit by lightning than any other type of roof. However, metal roofs do dissipate an electrical charge, so if, by the rare chance your home is hit by lightning, a metal roof may help prevent your home from catching on fire.

Q: Can I walk on a metal roof?
A: Typically metal panel systems can support the load of an average individual walking on them. But you should take care to not cause damage to the roof because of abrasion or collapsing of the raised portion of the panel—as with any system.

Q: How much does metal roofing weigh?
A: Metal roof systems commonly weigh between one to three pounds per square foot. The metal gauge and profile of the panel determines the weight. Compared to other systems, metal roofing systems are considered a lightweight roof covering.

Q: How far can I span with metal roofing?
A: The profile, gauge, and width of the panel itself determines span capability. In order to determine if the panel meets the actual performance requirements for your project, consult individual load tables and test results.

Q: How much longer can I expect a new metal roof to last versus common roofing such as wood  shingle or asphalt?
A: A metal roof usually lasts two to three times longer than a regular roof. In other words, a metal roof can last 40 to 60 years or more. Typically, an asphalt roof lasts between 12 to 20 years, depending on pitch and climate. Asphalt roofs decompose but a metal roof will never decompose. Metal roofs retain their good looks and durability year after year after year.

Q: Is metal roofing noisier in bad weather than cedar shake, slate roofing, tile, or asphalt?
A: This is a common misconception about metal roofing. Metal roofs are often installed over a solid substrate. Furthermore, attic space and insulation provide even of a sound barrier. Research proves that metal is not any noisier than traditional roofing systems. In fact, you’ll hear more outside noise from windows and walls than your metal roof.

Q: How will a metal roof endure extreme weather?
A: A metal roof has the ability to withstand decades of abuse from high winds, hailstorms, heavy snow, wildfires, and other forms of extreme weather. Metal roofing has a wind rating of 120 mph—equal to an F2 tornado. It is also the roofing system of choice in locations of heavy snow because it protects the structural integrity of a roof. It eliminates ice damming at the eves so water won’t back up and create leakage into your home. Furthermore, it also adds protection if burning embers land on your roof. To top it off, metal roofing may even save you money on your homeowners insurance.

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Consumer Agencies
Associations and Agencies for Consumers Regarding Metal Roofing Systems

Metal Construction Association (MCA) (www.metalconstruction.org)
National Roofing Contractors Association (NRCA) (www.nrca.net)
Metal Roofing Alliance (MRA) (www.metalroofing.com)
Associated Builders and Contractors (ABC) (http://www.abc.org/)...

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Metal Construction Association (MCA) (www.metalconstruction.org)
National Roofing Contractors Association (NRCA) (www.nrca.net)
Metal Roofing Alliance (MRA) (www.metalroofing.com)
Associated Builders and Contractors (ABC) (http://www.abc.org/)

California Building Industry Association (CBIA) (http://www.cbia.org/)
California Department of Consumer Affairs (DCA) (www.dca.ca.gov)
Home Builders Association of Northern California (HBANC) (http://www.hbanc.org/)
National Association of Home Builders (NAHB) (http://www.nahb.org/)
North Coast Builders Exchange (NCBE) (http://www.ncbeonline.com/)

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Industry Information
San Mateo County Metal Roofing Information
Popular Brands of Metal RoofingTypes of Metal Roofing & Services Available in San Mateo County Cities Served Zip Codes Served
Malarkey Metal Roofingmetal roofing installation Atherton
Belmont
Brisbane
Broadmoor Village
Burlingame
Colma
Daly City
East Palo Alto
El Granada
Emerald Hills
Foster City
Half Moon Bay
Hillsborough
La Honda
Loma Mar
Menlo Park
Millbrae
Montara
Moss Beach
Pacifica
Palomar Park
Pescadero
Portola Valley
Princeton by the Sea
Redwood City
San Bruno
San Carlos
San Gregorio
San Mateo
Sharp Park
South SF
West Menlo Park
Woodside
94002
94005
94010
94011
94014
94015
94016
94017
94018
94019
94020
94021
94025
94026
94027
94028
94030
94037
94038
94044
94060
94061
94062
94063
94064
94065
94066
94070
94074
94080
94083
94096
94098
94128
94401
94402
94403
94404
John Manville Metal Roofingsheet metal roofing
Atlas Roofing Corporationstanding seam metal roofs
CertainTeed Metal Roofingmetal roof flashing installation
Owens Corning Roofingmetal roof shingle installation
TAMKO Building Products, Inc. Metal Roofingmetal roofing supplies
Everlast Metal Roofing metal roof coating application
Metal Roof Specialtiesgalvanized metal roofing
Metal Roofing Alliancecommercial metal roofing
IB Roof Systemscorrugated metal roofing
GAF Metal Roofingmetal roof repair
ELK Roofingmetal roof panel replacement
Georgia-Pacific Roofingaluminum roofing
MetalWorks Roofstin roofing installation
Metal-Fab Roofingsteel roofing replacement
Carlisle Metal Roofingindustrial roofing installation & repair
Tremco Metal Roofsmetal composite roofing
Taylor Metal Roofingreclaimed metal roofing
Suprema Roofingsloped metal roof installation
EPDM Roofingflat metal roof replacement
Duro-Last Metal Roofingresidential metal roofs
Custom-Bilt Metal Roofingcopper roof installation
Vincent Metal Roofingcomplete metal roof systems