Overview
About Us
Cal-Pac Roofing, a local roofing company based in San Mateo, offers installation of a full line of roofing products. Since 1978, Cal-Pac has installed all styles such as shake, shingle, tile, low slope and flat roofs. Cal-Pac utilizes only premium products that are fully warranted. Rain Gutter installation is also available. Visit the custom showroom in San Mateo and review the many available types of roofing available for residential and commercial customers.
*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.
Customer Reviews

"Solar and battery installation. Great service, on time and great value for the money. As a retired plumbing contractor I sometimes expect more out of other tradesmen. I got that level of service from Cal-Pac Roofing on this job. Very happy!"
"I used Cal-Pac in the pas for my roof and just used them now for solar panel an battery installation. They did a great job sizing what would work on my house, installing it on my roof, and subcontracting the electrical work. The inspector had ZERO issues with the install and was approved the first time. This is not to be underestimated as cities can be hard to deal with"
"We interviewed multiple roofing companies before we selected Calpac and we were not disappointed. John, Earl, and the team did an initial walk through of the roof and helped us select the type of shingle and gutters. They started on the roof a few weeks later and finished it all in about 4 days. We have a section of the roof that is flat and they laid down a rubber membrane that came out really nice. They were really easy to work with and coordinated with us as we did some electrical work while the roof was off. I highly recommend Calpac for your roof!!"

"Customer asked us not to share his/her review."

- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "TIMELINESS OF WORK PERFORMED"
- "Good thorough job!"
- "Customer asked us not to share his/her review."
- "Professional and Knowledgeable Contractor"
- "Customer asked us not to share his/her review."
- "CALPAC ROOFING DID"
- "Customer asked us not to share his/her review."
- "Are professional and perform excellent work and use quality materials"
- "warranty"
- "Customer asked us not to share his/her review."
- "did a great job."
- "didnt tell me they couldnt apply permit for my roof before started taking old roof down and they promised me to give $100 to the friend referred them to us but my friend has not got th money yet"
- "Had a highly skilled workforce, explained my options & are honest"
- "Customer asked us not to share his/her review."
- "did a fantastic job!!"
- "are reputable."
- "keep up the good work"
- "Customer asked us not to share his/her review."
- "will be satisfied"
- "are very experienced and their workers and formaen are well trained and courteous"
- "Customer asked us not to share his/her review."
- "care about customer and care about quality of work they are simply the best"
- "Did an excellent job which I believe will finally solve all my leak problems. There were basic structural flaws in my roof which they described and solved."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "explained the estimate thoroughly and is very customer-service focused."
- "would treat everyone the same also good price and service"
- "Customer asked us not to share his/her review."
- "performed service as scheduled work with homeowners and responded to homeowners needs and calls immediatly"
- "Customer asked us not to share his/her review."
- "DID AN OUTSTANDING JOB"
- "Customer asked us not to share his/her review."
- "PROVIDE A QUALITY PRODUCT"
- "were very professional, did a great job installing, and cleaned up so that I didn't even know they had been there."
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "HAVE FAIR PRICES, GIVE DETAILS OF WHAT TO EXPECT DURING INSTALLATION. SUPERVISORS KEEPS IN TOUCH"
- "Customer asked us not to share his/her review."
- "Customer asked us not to share his/her review."
- "make a good product"
- "are very knowable with the job they doing I'm very pleased with the job they are done for me"
- "Customer asked us not to share his/her review."
- "are better then previous roofers that I have used"
Awards
Installation Excellence Award
This award is for contractors that consistently install with a very high level of quality and provide their customers the highest protection that GAF offers.
Consumer Protection Excellence Award
This award recognizes those contractors that best protect their clients with system selling and enhanced warranties.
Training Excellence Award
This award is for contractors that are committed to training and continuous improvement.
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