Commercial Roofing Services

Three Generations of Roofing Expertise

Award-Winning Roofing Solutions

Commercial Roofing Services

TPO Roofing Systems
In the 20+ years that TPO has been in the field, it's become one of the most popular products used for low-slope commercial roofing.
Short for thermoplastic polyolefin, TPO is a single-ply roofing membrane that offers excellent performance at a cost-effective price. Heat-welded seams provide superior strength. TPO's long-term heat, UV, and natural fungal resistance, plus flexibility without the need for plasticizers also make TPO a reliable low-slope roofing system. TPO roofing systems are an excellent choice for keeping your building cool as the material reflects heat rather than absorbing it.
PVC (polyvinyl chloride)

Reliable and versatile membrane with excellent flexibility, as well as increased resistance to UV light, chemicals, tears, and punctures. PVC membranes feature heat-welded seams, a white, reflective color, and ease of repair.

Liquid Membrane Systems

Flexible, highly reflective, and easy to repair, liquid-applied-roofing is constructed from high-quality components that all work together to provide excellent protection from the elements.


Year Warranty


Material Choices


Days per Year Support



The value we bring

Bringing more value to every customer and every project through our roofing services. 

Free Estimates/Project Bids
20-Year Warranty
No-Hassle Installation
22 Material Choices
Emergency Repairs
Title 24 Cool Roofs

Commercial Roofing Services

Your building's roof is one of the most important assets of your property. A quality roof will keep the elements out while being energy efficient. Our roof repair services include but not limited to:

  • Leak Detection & Repair
  • Inspections
  • Roof Deck Damage Repair
  • TOP Commercial Roofing Systems
  • PVC Commercial Roofing Systems
  • Tile Roof Repair & Replacement
  • Shingle Replacement & Repair
  • Waterproofing and Coating
  • Gutter Services
  • And more!

As a member of the GAF Master Elite and GAF President's Club, we offer one of the best warranties in the industry, Diamond Pledge™ NDL Roof Guarantee. You can expect:

  • Unlimited dollar amount for covered repairs
  • Up to 35 years of coverage on select systems
  • Replacement material
  • Covers material defects and workmanship errors
  • Guarantee transferable to the next owner
  • Includes the cost of labor to correct the problem

Speak with one of our project managers to learn more!


Missing a few tiles or are your shingles damaged? Re-roofing can be the way to go. Reroofing is the process of replacing your current roof covering material with new material. This is an excellent option if your roof's deck is in good shape and you want to change the look.

New Roof Replacement

You will need a roof replacement if your roof's deck is experiencing damage, rot, or water leaks. Oftentimes, when people try to DIY their reroofing or hire rookie roofers, is that they reroof over damaged decks. This can cause more roof damage and double the costs to replace it than doing it right the first time.

Don't fret about having to replace the entire roof over the damage. If damage is minor like less than half your roof, you can ask your roofer about a partial replacement.

Our Commercial Roofing & Solar Projects

Delivering custom solutions for every property

commercial solar solar energy company san jose ca
A green investment

Commercial Solar

Simmitri's building performance analysts specialize in evaluating a complete building using consumption analyses. They will make recommendations based on findings before installing a solar system. Taking time to review overall energy efficiency first, is what makes Simmitri a leader in commercial energy solutions.

What we do:

  • Best in Class Design and Engineering
  • Project Management
  • Installation & Construction
  • Financing Assistance
  • Operation & Maintenance

2022 Promotions

Year Long Savings


Receive $300 off on a re-reroof when installing a new rooftop solar energy system

Looking to go solar on an old roof? No problem! We are offering $300 OFF your reroof when you install a new solar energy system with us!

Give us a call to schedule a no-cost, no-obligation in-person or remote consultation.

Save when you go solar with us!

Choose between $500 savings or a new EV Charger* with a qualifying new solar energy system installation.

*EV charger installation is not included

We offer $0 down full financing on your roofing and solar project. Meet with our team to get a free estimate.

Give us a call for more information.

Near Me

Commercial Roofing Service Locations

San Jose (Headquarters)
Santa Clara
Morgan Hill
Los Gatos
Cambrian Park
Willow Glen
Mountain View

Commercial Roofing

About Simmitri Solar

Over 25 years of excellence in solar power, energy, and roofing services.

We are a customer-centric Silicon Valley company with an approach to energy management that is unique to the entire industry. Since 1995, our team has demonstrated to thousands of satisfied customers, expertise in designing and installing solar power, roofing services, and now energy management solutions. From high-level corporate oversight to our experienced team of roof system technicians, energy advisers, operations/install personnel, project management professionals, sales consultants, and energy-efficient building performance analysts, we are all passionate about engaging our customers in... Doing roofing services the way it should be done.

Celebrating our 28th year in business, we are dedicated to providing our valued customers with the best long-term solutions.

Bernard Laroche
Google Review

It's been a long time since I've had such professional work done and amazing service.
They got the right financing program for my needs and the entire project was done in a very short time...

Jeremy M.
Yelp Review

I got bids from Sunrun and SolarCity. Simmitri was comparable to Sunrun and slightly cheaper by just a hair -- what made me go with simmitri in the end was their great customer service.

Beverly Graves
Google Review

Simmitri was the only company that had all of these options fully integrated as one solution. I love how attentive you are to any questions before your system. Excellent installation.

Kevin Bush
Google Review

Simmitri got me large incentives for Battery storage with solar. Their communcation was excellent through the entire process. Very good installation and customer service was great!

Let's Get Started!

Fill out the form below to schedule a chat with one of your Customer Success Ambassadors about our commercial roofing services.

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