We provide the following commercial roofing services. 

Our service area covers San Jose, San Francisco, Oakland, Santa Rosa, Sacramento, and Stockton.

ACS is a trusted roofing contractor, with a quality people you can depend on to get the job done. If you have any roof problem, we can fix it. 

Single Ply Roofing Systems

Single-ply roofs are highly durable, and long-lived. Our preferred materials are TPO and PVC roofs. Our preferred manufacturers include FirestoneCarlisle, FiberTite, and Tremco.  Compare their upsides and downsides.  More about our preferred commercial roof systems »

Acrylic and Silicone Roof Coating

Environmentally friendly cool roof coatings extend your roof’s life, and are a good alternative to roof replacement. We install roof coatings by GE SiliconeAstec, and AlphaGuard Bio Liquid by TremcoWhy we recommend acrylic and silicone roof coating systems 

Roof Maintenance

Avoid costly leaks and interior damage. Keep your roof well-maintained and meet your warranty requirements.  More about our commercial roof maintenance program »


Keeping water out of your building can be challenging. We prevent water from leaking through parking structures, concrete decks, and below-grade walls with a variety of sealants. More about our commercial waterproofing services »