Commercial roofers you can count on.

Roof giving you a headache? 

Just say NO to stress. Choose ACS.

Need a reliable roofer? Our customers keep coming back because they count on us to do the job right.

Contractors make you nervous? Our professionals will set your mind at ease.

What if something goes wrong? We’ll do our best to make sure it doesn’t. If it does, we’ll fix it.

Screened HomeAdvisor Pro - Allied Construction ServicesWinter is coming. Is your roof ready for the rains? Our roof maintenance packages come with a no-leak guarantee »

Don’t delay. Call us today at (925) 548-9748 !

ACS is a licensed roofing contractor and general contractor and the second-largest veteran-owned business in the Bay Area.  Our service area includes San Jose, San Francisco, Oakland, Santa Rosa, Sacramento, and Stockton.

Don't replace, if you can restore.

We follow state and county COVID-19 guidelines to ensure your safety. More »

Oakland • San Jose • San Francisco • Sacramento • Santa Rosa • Stockton

What Solution is Best for You?

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TPO Roofing

TPO is on 1/2 of all commercial roofs. Find out if this popular choice is right for you »

PVC Roofs

The Cadillac of roofs, PVC is fire retardant and self-extinguishing. Learn more »

Project Spotlight

Novato Firestone Single Ply
66,00 sq ft
Firestone TPO
Novato
Skilled Nursing Facility

Drone shot of roof covered in solar panels TPO single ply membrane at Kohl's roof in Petaluma.65,000 sq ft Acrylic Roof Coating over TPO Kohl’s, Petaluma Retail


50,000 sq ft
TPO & Composition Shingle
Yuba City
Assisted Living Facility

An 80,000 sq ft acrylic roof coating system in El Cerrito. 80,000 sq ft Silicone Roof Coating El Cerrito Shopping Center Retail

A Licensed and Certified
Commercial Roofing Contractor

Serving Northern California
For 20 Years

Video Highlights

C&H Sugar Factory Sign and Brick Building with Two Silos

C&H had a sticky problem nobody wanted to fix.  
View video »

The customer added 15 years to their roof life and saved big. View video »

Walnut Creek City Hall Roof with solar panels

We solve every roof problem, even skylights. View video »

Premier Commercial Roofing Solutions You Can Trust

Our men installing two medium-sized TPO single ply roofs.

For two decades, we’ve built our reputation as one of the premier commercial roofing companies in Northern California with:

Transparent Quotes

We value your time, so we provide quick, comprehensive, hassle-free quotes, at no charge. Got questions? We’re happy to answer them.

Professional Craftsmanship

We do high-quality work on time and on budget. Our certified team is up to date on the latest and greatest processes, tools, and methods to ensure you receive the best possible installation or repairs. 

Friendly Customer Service

Our customers come first. We actively listen to your needs because your satisfaction is the key to our success. We treat you with respect, maintaining clean job sites, answering questions, and doing our best to exceed your expectations.

Value Engineering

We love to think outside of the box if your project presents a unique challenge.

The Highest Quality Materials

We only use reputable, high-quality materials, but they are only as good as the people installing them. That’s why we regularly inspect our jobs to make sure no details are left unfinished.

Need a high-quality roofing company you can depend on?
Call us at (925) 548-9748 for more information.

Customer Testimonials

"My company has relied on ACS as a valued resource for roofing and waterproofing for some years now. [...] Timely and comprehensive proposals. Competitive pricing. Workable scheduling. Efficient and courteous workforce. Knowledgeable and experienced sales, management and office staff. Work product of the highest quality. [...] We look no further than ACS for our Roofing and Waterproofing needs. Highly recommend.""
Tom Hastings
Business Owner
Bill D[...] always put the customers first always willing to go beyond the normal to assist us."
Lawrence Stauffer
Building Owner
"The best company we have worked with for our roofing needs. Mousa, who heads their crews, is one of the most professional and competent employee a company could want. When his crews were booked and couldn't get out to us immediately, he personally took care of us. This company has great employees and we will continue to use them for all our construction needs. We highly recommend them."
Julie
Business Owner, Trey Jay LLC
"The foreman had the greatest attitude. He went above and beyond."
Christophe Nussbaumer
Operations Manager, City Hope