Commercial Roofing Systems and Solutions
Whether it's TPO, liquid-applied roofing, or anything in between, there's a GAF roofing system for your needs.
Download brochure
We’re developing durable roofing systems for today’s flat roof challenges
Choosing the right roofing system starts with choosing the right roofing company. As North America’s largest roofing manufacturer, our broad product offering means we’re not vested in a single technology.
TPO roofing membranes
In the 20+ years that TPO has been in the field, it’s become one of the most popular products used for low-slope roofing.
See resources
See TPO membranes
See resources
PVC roofing membranes
A reliable and versatile membrane suitable for all types of single-ply systems with guarantees up to 30 years.1 See resources
See PVC membranes
Roof coatings systems
Reliable roofing solutions that can help extend the life of the existing roof and the time between tearoffs.
View resources.
See roof coatings
View resources.
Asphaltic roofing membranes
Offers great flexibility, impact resistance2, strength, and system compatibility.
See asphaltic membranes
Insulation
Offering a full line of the high thermal value flat and tapered polyiso insulation panels compatible with all types of roof systems.
See resources
See insulation
See resources
Cover boards
Prolong the life of your roof with a full line of cover boards offering thermal performance, protection from fire, moisture and heavy traffic.
See cover boards
Adhesives
Find the right installation application among our dozens of adhesives products.
See all adhesives
Cleaners, primers, sealants, cement
Cement, cleaners, primers, and sealants support installations and repairs.
See all products
Fasteners & Plates
Excellent thermal performance for all types of roofing systems.
See fasteners & plates
Perimeter Edge Metal
GAF Perimeter Edge Metal offers a full lineup of pre-fabricated coping, fascia, drip edges, gutters, downspouts, and trim.
See Perimeter Edge Metal
Accessories & flashings
Accessories and flashings support and enhance commercial roof installations.
See all products
Underlayments
Commercial underlayments are designed for installation within flat roofing systems.
See underlayments
1Additional requirements apply. Contact GAF for details. See applicable guarantee, available at gaf.com, for complete coverage and restrictions.
2GAF warranties and guarantees do not provide coverage against impact. See applicable guarantee or warranty, available at gaf.com, for complete coverage and restrictions. Hail or puncture resistance coverage may be available for purchase for eligible systems. Contact GAF for more information.
Right-sized roof repair for your growing business
Being prepared to offer an efficient maintenance and repair service can help diversify your business, and help keep your cash flow humming.
Commercial roof repair and maintenance solutions
GAF Commercial is building right-sized equipment and product solutions. Explore our TPO roof maintenance and repair products today.
Easier is better: Time-saving commercial roofing products
Reduce time on the roof with systems and solutions from GAF Commercial Roofing. GAF has a range of products and services to finish more commercial jobs faster.
We're building confidence into roof coatings
Our new refocused coatings line-up makes it a snap to spec the one that perfectly suits the challenges of your roof. Whether you need to repair, restore, or extend the life of your existing roof, there’s a GAF coating that can do the job — and now it’s a lot simpler to choose and use.
Discover elastomeric roof coatings for your metal roof restoration project
The HydroStop® System is a cost-effective, long-term solution for restoration of structurally sound metal roofs. See the 5 simple steps to metal roof restoration with the HydroStop® System.
Explore more roof coating systems
Acrylic over Asphaltic
Acrylic Roof Coatings help protect against normal weathering, aging, and UV. See the 5 simple steps to install acrylic roof restoration over asphaltic roofing.
Acrylic over Asphaltic
Silicone over Asphaltic
Silicone Roof Coatings can help protect against leaks. See the 5 simple steps to install silicone roof restoration over asphaltic roofing.
Silicone over Asphaltic
Silicone over Metal
Silicone Roof Coatings can help protect against leaks. See the 5 simple steps to install silicone roof restoration over metal roofing.
Silicone over Metal
Commercial Roofing Products: Solutions for Every Roofing Need
From single-ply membranes to full system solutions, and state-of-the-art digital services to hands-on training, GAF offers the range of durable, easy-to-use products and services you need to succeed.
Building solutions for the way you learn
Professional training for the entire commercial roofing industry, on demand or live courses, where and when you want it.
We’re building learning opportunities that fit your schedule
The GAF Learning Portal brings personalized learning to our industry partners. You and your team can access the easy-to-use platform on computers, tablets, and mobile phones, whenever and wherever it’s most convenient for you. Low-slope classes include product knowledge, installation skills, business-building techniques and much more.
We’re connecting you with experts
In Roofing it Right, Dave and Wally, two of the industry’s most experienced low-slope pros, share their decades of experience to help you and your crew take your roofing game to the next level. Browse some of their videos below or view all commercial roofing video playlists by Roofing it Right.
-
Reroof Project Kick-Off | Roofing it Right with Dave & Wally by GAF
Dave & Wally provide an overview of the series and what you will learn as they tackle some of the typical project challenges along the way. GAF's Roofing It Right series "Reroof Project from Start to Finish" features Dave & Wally walking us through the stages of a commercial reroofing project. -
What to Look for When Inspecting a Commercial Roof | Roofing it Right with Dave & Wally by GAF
Dave & Wally show how to get started with an initial roof walk. They share the typical things they will look for in assessing the condition of a roof to help determine whether it can be repaired or should be replaced. -
How to Perform Core Cuts to Assess Existing Roof | Roofing it Right with Dave & Wally by GAF
Dave & Wally talk about the purpose of taking core cuts to properly assess the underlying structure and condition of the existing roof. They perform and analyze the core cut and show you how to properly patch the cuts you've made in the process. -
How to Tear Off a Low Slope Commercial Roof | Roofing it Right with Dave & Wally by GAF
Dave & Wally walk through the steps of tearing off the existing roof on our project building. It can be a dirty process but there are tips and techniques for helping the tear off go more smoothly. -
Assessing the Roof after Tear-Off | Roofing it Right with Dave & Wally by GAF
Dave & Wally will inspect the newly exposed original deck of the building to identify any areas which may need to be addressed prior to the new roof being installed.
GAF Commercial: Building around you
See how we’re taking customer feedback, research, and good old conversation — and turning it into constant improvement.
Frequently asked questions
GAF roofing materials are backed by North America's largest roofing manufacturer, and our broad range of products, national network of manufacturing plants, and network of certified Commercial Contractors* helps ensure that your roof will perform for years to come.
GAF manufactures high-quality roofing materials for asphaltic (APP, SBS, and BUR), single-ply (TPO, PVC, and PVC KEE), liquid-applied, and hybrid (e.g. asphaltic/single-ply) roofing systems. In addition, GAF manufactures prefabricated accessories, edge metal, and more, to help ensure a single source of reliable roofing for all of your roofing needs.
For industry-leading training in commercial roof installation and maintenance techniques, contact GAF CARE (Center for the Advancement of Roofing Excellence) at gaf.com/en-us/for-pros/care-training/commercial. For tutorials and how-tos, check out the GAF Roofing it Right video series, available in English (Dave and Wally) and Spanish (Chino y Mitos) on Youtube.
* Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. For more information, view the Contractor Terms of Use.
Commercial support teams
Design Services
Product and tech support, custom solutions, code assistance, and more 877-423-7663 Option 4, then Option 3
Email us
Tapered Design
Regionalized Design Specialists who provide tapered solutions. Email TDG@gaf.com
See tapered
Commercial Customer Care
Talk to a professional who knows your regions and is dedicated to serving your business needs.
Contact GAF commercial
Building & Roofing Science
Book a virtual meeting to get free advice on your project-specific questions, code conundrums, and impossible details.
Book a meeting
Related blog articles
Understanding the Layers of a Single-Ply Roofing Assembly
Commercial Roofing
Single-ply roof membranes are a common choice for commercial low-slope roofing projects due to its durability, reflectivity, and ease of installation. The membrane is the top of a multi-layer assembly designed to help protect the building from the exterior elements. The layers of a roof assembly must all work together with two main goals: help keep the interior separate from the exterior (i.e. block the movement of water, air and heat between inside and out) and stay in place through expected weather conditions.
November 10, 2025
Roof Coating vs. Commercial Replacement: A Guide for Commercial Buildings
Commercial Roofing
When comparing roof coating vs. commercial replacement, you might wonder: Can I refresh my roof, or do I need a full roof replacement? Roof coatings—often called liquid-applied roofing systems—are multi-component systems that can form a seamless membrane over an existing low-slope roof. Coatings can help extend the service life of commercial roofs that are still structurally sound without having to go through a full replacement.
January 13, 2026
What Is the Lifespan of a Commercial Roof? Understanding How Roofs Age Over Time
Commercial Roofing
Commercial roofs are a critical part of any building, protecting people, equipment, and property from the elements. But what is the lifespan of a commercial roof? While most commercial roofs generally last 20 to 30 years, lifespan varies widely depending on material type, climate, maintenance, drainage, and installation quality. With proper care and timely maintenance, a roof can often outlast its expected lifespan.
January 20, 2026
What to Know About Torch Down Roofing
Commercial Roofing
As a commercial roofing professional, you're responsible for helping your customers find the best roofing systems for their needs, which means staying in the know about materials and methods. Torch down roofing is a roofing installation process that uses a handheld propane torch to heat up and install sheets of modified bitumen roofing material. As these sheets are laid out, the torch's heat bonds the material to the layer beneath, forming a tight seal that's hard for water to penetrate.
By Mark Soto
November 18, 2025