Commercial
ROOFING CONTRACTORS
ROOF REPAIRS | ROOF REPLACEMENTS | INSPECTIONS & MORE!
Grandmark
Single-Ply TPO Roofing Systems
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 need for plasticizers also make TPO a reliable low-slope roofing system.
In the 20+ years that TPO has been in the field, it’s become one the most popular products used for low-slope roofing. Over 1 billion square feet are installed annually, making up over 50% of single-ply roofs being installed today.
What Roofing System is Best For your Building?
Contact GRANDMARK Team to evaluate how to get the most out of your roofing system.
I really was impressed with the response time when I sent the initial request for a estimate appointment, having someone come out to look at my roof to having the... read more
Vickie Vaughan 
I want to state I did not know anyone at Grandmark before I started the process. Justin was communicative during the whole process of the roof installation. His crew was... read more
Lloyd Pratt 
Glad to finally have a roof that doesn't leak. Three other roofers tried to repair my leak unsuccessfully. Grandmark was out within a few days, and a week later the... read more
1 min videoGrandmark
Best Commercial Roofers
The reason is that single-ply roof membranes are flat roofing which makes them perfect for the large space commercial buildings cover. You might ask; but why can’t I use a flat asphalt shingle roof? Well, flat shingles are not as durable as single-ply roof membranes because flat shingles are made from different materials. For flat shingles, water can get into the asphalt layer and since the shingles were installed as a flat roofing system, the water will not be able to get out thereby damaging the roof.
20,000+ Satisfied Customers
We have provided excellent services to thousands of customers, and we’d love for you to be able to experience the quality of our technicians!
Professionals
Our team has extensive professional training and a solid skill set to handle your project.
Locally Owned
We are a local, family owned business and serve the greater Central and Northern California area.
100% Satisfaction
We are professionals and proud of our work. If you aren’t satisfied, let us know and we will make it right!
20,000+ Satisfied Customers
We have provided excellent services to thousands of customers, and we’d love for you to be able to experience the quality of our technicians!
Professionals
Our team has extensive professional training and a solid skill set to handle your project.
Locally Owned
We are a local, family owned business and serve the greater Central and Northern California area.
100% Satisfaction
We are professionals and proud of our work. If you aren’t satisfied, let us know and we will make it right!
Grandmark
Commercial Roofing
At Grandmark Energy, we’re your local commercial roofing contractors for service on all commercial roof types. We have over 24 years of 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.
Your Commercial Roofing Company
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.
Structures like prisons and hospital have complex roofing needs. At Grandmark Energy, we have both the experience and skill needed to expertly serve these needs. We encourage all of our clients to trust in our talents and let us do what we do best. This allows you to focus exclusively on your business, and not divide your attention between your work and your roof. Since we have expertise across several fields, including plumbing, framing, and air conditioning, we can serve as a total service solution for your roofing needs. We also make sure to install your roofing system of choice in a way that lowers the potential for leaks and other problems in the future.
Commercial Roof Repair
Wear and tear is normal. When you want to repair your commercial roof, service your roof or extend your roof life. We have the expertise to ensure your business is protected with a reliable roof.
Quality Commercial Roofing Systems
The next time you need service on your commercial roof, make Grandmark Energy your first call. We offer on-demand scheduling, we mean that we work around your availability, and strive to never disrupt the daily flow of your business. To learn more about our commercial roofing options and services, give us a call today ! As the leading commercial roofing contractors for Fresno, CA, we excel at quality work.
Single Ply Systems
There are two main types of single-ply membrane commercial roofing: Thermoplastic Polyolefin (TPO) and Ethylene Propylene Diene Terpolymer (EPDM).
Single Ply membranes have become popular because of durability and energy efficiency.
Flat Roof Repair & Installation
Weather you need repairs, installation, restoration or complete flat roof replacement, we are the local team you can trust for quality work.
