What types of commercial roofing systems do you install?

We install various commercial roofing systems including TPO, EPDM, PVC, metal roofing, modified bitumen, and built-up roofing systems. Each system is selected based on building requirements, budget, and performance needs.

How long does a commercial roof installation take?

Commercial roof installation typically takes 1-4 weeks depending on project size, weather conditions, and complexity. We work with flexible scheduling to minimize business disruption.

Do you offer emergency commercial roof repair services?

Yes, we provide 24/7 emergency commercial roof repair services for urgent issues like leaks, storm damage, or structural problems that could affect business operations.

What is the lifespan of a commercial roof?

Commercial roof lifespan varies by material: TPO and EPDM last 15-25 years, PVC lasts 20-30 years, and metal roofing can last 40-70 years with proper maintenance.

Do you provide commercial roof maintenance programs?

Yes, we offer preventive maintenance programs including regular inspections, cleaning, minor repairs, and documentation to extend roof life and maintain warranty coverage.

What warranty do you offer on commercial roofing?

We offer comprehensive GAF commercial roofing warranties up to 50 years, covering both materials and workmanship. Warranty terms vary by roofing system and project specifications.

Can you install energy-efficient commercial roofing?

Yes, we specialize in cool roof systems and energy-efficient roofing solutions that reduce energy costs, qualify for rebates, and help achieve LEED certification goals.

How much does commercial roof replacement cost?

Commercial roof replacement costs vary based on size, materials, complexity, and building access. We provide detailed estimates after thorough inspection and assessment of your specific needs.

Rated 5-Stars on Google and Yelp out of 150+ Reviews

Commercial Roofing Contractor

We’ve been involved in roofing on both the commercial and residential sides for decades. This is why we can handle any project in a smooth, customer-centric, professional way: Title 24 Cool Roofs, Emergency Repairs, Roof Maintenance, provide CEA’s (Comprehensive Energy Assessments) and Roof Inspections, and more. Simmitri is your holistic solution.

    
 
 
       Posted on Google  
   
   Stephanie R.G. Edelman 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a great experience using Simmitri after a previous company went bankrupt. Simmitri folks were responsive, thoughtful and knowledgeable.
  
 
      Posted on Google  
   
   Andrea Goldsmith 
 
 
 
 Trustindex verifies that the original source of the review is Google. Simmitri installed our Enphase solar panels and later our battery system. They did a terrific job.   Our system runs well after three years. They were good to work with. Their office helped us with the California document submission. We are pleased!
  
 
      Posted on Google  
   
   David Martinez 
 
 
 
 Trustindex verifies that the original source of the review is Google. After interviewing 3 solar companies I selected Simmiti for my dolar installation. The planning and submissions to PGE and SCCounty Building were done in a timely manner. The installation crew was superb. The inspector was highly impressed with the installation. Ana, my PM, stayed on all parties to get the final steps of approvals. I highly recommend Simmitri for your solar project. 9/12/2025 I just recently added 6 panels to my system (added e-car) and Pamela at Simmitri handled my project. Communication throughout the project was excellent and the crew, once again were FANTASTIC! Simmitri is a pleasure to work with.
  
 
      Posted on Google  
   
   Denise Tsang 
 
 
 
 Trustindex verifies that the original source of the review is Google. We can say that installing and working with Simmitri was a seamless experience. They did exactly as they say they would. The staff is amazing to work with, especially the Project Manager Pamela Rodriguez and the Sales Manager Lonnie Cory. The installation crew was fast, clean and friendly. All in all, a great experience working with them from the beginning... and continuing. We are so happy with our new system!
  
 
      Posted on Google  
   
   Ben Bartyzel 
 
 
 
 Trustindex verifies that the original source of the review is Google. Simmitri Inc. roofers did an excellent roof replacement for me, they were on time and on budget.  I highly recommend this firm.
  
 
      Posted on Google  
   
   Jerry Suarez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Our project began in 2020 with the construction of our new home. When we were ready for our Solar installation, Jonathan walked us through every step of the way. The installation crew were fast, competent, and thorough. We couldn't have asked for a better experience!!
  
 
      Posted on Google  
   
   Lanard C 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great company....solar appointment was the best I have seen and very informative ...no pressure and very polite approach focusing on my interests and needs.  System was installed and it was a great experience...
  
 
      Posted on Google  
   
   Dylan Nunn 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great experience!
  
 
      Posted on Google  
   
   Steve McShane 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wow! The service and attention to detail that Jonathan and his team provides is astounding. We had a complicated project with a complicated team and every question was answered in a timely fashion. Every one of the reviews I read is spot on. Thank you, Simmitri.

Leverage Integrated Bay Area Roofing Systems

Some see a roof as simply a roof. Simmitri sees it as an asset protecting your business. We challenge norms by integrating insulation, ventilation, daylight, and solar. We then incorporate signature rain gutters; fabricated on-site to accent your commercial property perfectly. This is the best way to derive value in a roof purchase and get the most significant ROI long-term.

We Provide Roofing + Solar Solutions In One

Many of our clients choose to integrate new custom-designed solar systems into their replacement roofing investment. Our experienced building performance professionals specialize in peaking facility efficiency by evaluating your building using detailed consumption analyses. This allows us to make commercial solar a straightforward and effective experience.

Premium, Industry-Best Coverage Across The Bay Area

As a GAF Master Elite roofer, our advanced commercial roofing systems come with the strongest, safest warranty in America! Our three-fold focus: protection, energy efficiency, and the environment. We also offer highly-reflective shingles and other innovative tech to green your business. And everything is covered as it should be to protect your long-term investment.

Our Process

How Commercial Roofing Works With Simmitri

Step One: Roof Inspection & Estimate

From high-level corporate oversight to our pro team of roof system technicians, energy advisers, operations/install personnel, project management experts, sales consultants, and energy-efficient building performance analysts, we’re passionate about educating and engaging our customers in doing solar properly. Learn more about our Seasoned, Professional Service.

Step Two: Preparation & Planning

Once we understand the scope of your roofing (and potentially solar) project, we’ll have every detail mapped and planned for success. We’re proud to focus on consistent, accommodating, and crystal-clear communication. No surprises. No guesswork. No cookie-cutter workmanship. At Simmitri, we’re 100% committed to your satisfaction.

Step Three: Step-By-Step Installations

Simmitri is one of the longest-standing and most trusted solar+roofing companies in the Greater Bay Area, Silicon Valley, and Monterey Bay coastal areas. Working step by step to install appropriately sized and cost-efficient roofing/solar systems. After serving thousands of customers, our approach is fine-tuned. Learn more about Our Story.

Step Four: Fine-Tuning & Followup

Your project isn’t finished until every aspect of your new roofing system works flawlessly, and you see the benefits. But even after completion, our relationship doesn’t end. Through warranty coverage, working with you to ensure longevity, scheduled maintenance programs, and assisting in the overall management of any solar tech through our mobile app, Simmitri is your long-term partner.

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Discover More About Simmitri In The Silicon Valley

Simmitri is proud to be a customer-centric Silicon Valley-area company with a unique holistic approach to roofing and harnessing clean energy. Since 1995, our team has demonstrated to thousands of satisfied customers expertise in designing and installing commercial solar power, roof, and modern Commercial Energy Management solutions.

Through our commercial and residential services, community programs, non-profit work, and efforts to Restore The Balance Of Power to consumers, we’ve become an integral and trusted part of California’s solar industry.

Putting The Sun’s Power At Your Fingertips

We’re committed to your success. This is why we built and continue to improve our mobile application. With it, you stay on top of your Simmitri services from…just about anywhere! Throughout your project, it will act as a command center keeping you updated and informed in real-time every step of the way, as well as housing all your documents and media files.

Once your project is complete, if you have new solar components, you’ll be able to monitor your usage, track production levels, maximize efficiency, review annual reports, contact your Simmitri Customer Success rep, and much more! The Simmitri app is convenient and powerful, making your roofing/solar experience second to none, both during your installation and beyond for the lifetime of your system.