Commercial Roof Materials: Roofing Systems

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.

Roofing contractor installing GAF TPO membranes

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. View resources.

See TPO membranes

Contractors installing PVC roof membranes by GAF

PVC roofing membranes

A reliable and versatile membrane suitable for all types of single-ply systems with guarantees up to 30 years.¹ View resources

See PVC membranes

roofer spraying roof coating over a low-slope roof deck

Roof coatings systems

Reliable roofing solutions that can help extend the life of the existing roof and the time between tearoffs.

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Contractor applying Mod Bit APP roofing system

Asphaltic roofing membranes

Offers great flexibility, impact resistance², strength, and system compatibility. View resources.

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Wally from GAF Roofing it Right holding up commercial roofing accessories

Accessories & flashings

Accessories and flashings support and enhance commercial roof installations.

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Insulation

Offering a full line of the high thermal value flat and tapered polyiso insulation panels compatible with all types of roof systems. View resources.

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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.

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a roofer carrying a cannister of tpo quick spray adhesive

Adhesives

Find the right installation application among our dozens of adhesives products.

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Cleaners, primers, sealants, cement

Cement, cleaners, primers, and sealants support installations and repairs.

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Fasteners & Plates

Excellent thermal performance for all types of roofing systems.

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Perimeter Edge Metal

GAF Perimeter Edge Metal offers a full lineup of pre-fabricated coping, fascia, drip edges, gutters, downspouts, and trim.

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Skylights

VELUX^® commercial deck-mounted domes eligible for GAF coverage.

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Roof Overburden

Combine the performance  of EverGuard® single-ply or Ruberoid® asphaltic roof membranes with vegetative roofing and paver options.

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Roofing contractors installing commercial roofing underlayment

Underlayments

Commercial underlayments are designed for installation within flat roofing systems.

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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.

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.

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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.

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Commercial roofing contractors spraying roof coating products

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.

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Better 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.

GAF Learning Portal: Courses on Product, Roofing Installation, Business-Building

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.

Take a course

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.

Featured
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.