At Grandmark Service Company, we’re your local commercial roofing contractors for service on all commercial roof types. Whether you need repairs, installation, restoration, or complete flat roof replacement, we’re the local team you can trust for quality work.

When Your Roof Leaks or Needs Replacement

Financing Available 18 Months No Payments No Interest.

When Your Roof Leaks or Needs Replacement

Financing Available 18 Months No Payments No Interest.


We have over 20 years experience in the roofing industry, and can quickly and thoroughly address any service need you might have. Our team has completed commercial roofing projects for a wide variety of industries and building types, including shopping centers, hospitals, prisons, and more. For each of these building types, our crew understands how to accommodate structural needs and optimize roofing performance.

In addition to experience, customer service represents the secret to our success. We want our commercial clients to have the absolute best roofing system for their structure. We work hard to make that a reality across every job, and even offer financing to help you get the roof you want and need. Over the past 21 years, we’ve managed to create strong relationships with a variety of lending institutions, and can almost certainly make arrangements to get you the financing you want. We also offer our Stress Free Process guarantee. This ensures that you have nothing to worry about through the roofing process. We’ll make every effort to protect your property, meet your deadline, and deliver the quality roofing system you deserve. If you have any questions whatsoever, give us a call today at 844-415-8558.


Book a consultation with our expert comfort advisors and let the rest to our awesome team.


Commercial roofing requires a great deal of specialized knowledge. When the time comes for repairs or a new installation, you need commercial roofing contractors who understand how to organize a commercial project for maximum efficiency from start to finish. You also need a team that knows how to perform any commercial roofing project without disturbance to your day-to-day business. We understand that commercial roofing is expensive, and how for many companies, a “day off” simply is not an option. Additionally, we know how to install and repair commercial roofs for the greatest period of longevity possible.

 To learn more about our commercial roofing options and services, give us a call today at 844-415-8558 As the leading commercial roofing contractors, we excel at quality work.

Get 18 Months No Payments No Interest Financing

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  • I recently used Grandmark Service Company for a roofing repair project and new ductwork for my central air and heat unit. Two new solar light tubes and two exterior roofing vents for my whole house fan. First Grandmark was quick in sending out a Technologist to assess my roofing repair. The repair was done in a very professional manner with special attention paid to a down spout. I can't thank that tech enough for the excellent work and attention to detail. I then decided upon inspection of my existing ductwork to have it replaced. Again, the crew removed all the old ductwork out the top of the attic where the new exterior vents would be placed saving me a ton of clean up. Throughout this process they provided tarps on the floor and did a thorough clean up at the end of the day's work. All crew member's were professional and friendly and answered any questions. If I could I would give them ten stars. But for this review five stars will have to do. Again, thank you Grandmark service company. I won't hesitate to use you again should the need arrive.

    thumb John Ruch
    November 26, 2022

    Recently moved to the central valley, got 3 quotes from other companies that were way over priced. They finished the job in less than two weeks. Highly recommend this crew..will be using them for solar install in the future

    thumb Ruben Hernandez Avina
    November 19, 2022
  • Tony Arevalo was very professional and helpful. Grand mark service is awesome. Best experience I have had with HVAC so far.

    thumb nike omijori
    November 10, 2022

    Tony very professional. We we very pleased and estacic with everything Tony did for us.

    thumb Albert Scott
    November 10, 2022