Architects and Specifiers

For performance and innovation in complete roofing systems, talk to GAF first.

Innovative system solutions to address your specific needs

GAF offers you a full line of commercial roofing system solutions, including single-ply membrane, asphaltic, coatings, and liquid-applied roofing, as well as waterproofing, polyiso insulation, and a complete line of innovative adhesives and accessories.

TPO Roofing

Thermoplastic polyolefin (TPO) is a single-ply roofing membrane that offers 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.

Liquid-Applied Roofing

Suitable for repairing and restoring roofing projects that don't require a tear-off. A liquid-applied roofing system is comprised of multiple components — including liquid-applied coatings and reinforced membranes, or any combination thereof — that cure together to form a fully adhered, seamless, and self-flashing membrane.

PVC Roofing

PVC (polyvinyl chloride) stands up to grease, oil and other chemicals compared to other material. Offers many of the same same performance advantages as TPO including heat-weldable seams, a highly reflective surface, and wider rolls.

Asphaltic Roofing

Asphaltic systems include Modified Bitumen (Mod-Bit) and Built-Up Roofing (BUR). Mod-Bit is made from asphalt modified with polymers or solvents to provide flexibility and strength. The BUR membrane consists of multiple plies of felts, fabrics, or mats with alternate layers of bitumen. 

Insulation and Cover Boards

EnergyGuard Polyiso Insulation offers a complete lineup of products to meet most low-slope commercial roofing insulation needs. It provides exceptional thermal performance at an economical price.

TPO performance that's proven to stand the test of time

A recent study of EverGuard® TPO roofs installed between 8 and 16 years ago found the all performed above ASTM standards for newly manufactured TPO. GAF analyzed membrane samples from roofs across the US and studied thickness over scrim, surface cracking, and the ability to repair aging TPO membranes.

Need help selecting the right roofing system?

Try GAF Roof Advisor, a roof-evaluation tool that helps you select a suitable roofing system for your specific needs.

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Specifying Simplified

Get a head start with one-click downloads of our roof systems. Our packages contain the documents and the specs you need for GAF's most popular systems: a CSI-formatted Guide Specification, product and safety data sheets, a sample guarantee, and details. Browse our systems below to download, email, or print materials in just a few clicks.

 

 

 

Design Resources

BIM & REVIT Library

TPO & PVC Detail Video Library

TPO & PVC Architectural Detail Manual

Attachment Tables for TPO & PVC Guide


Design Guides

A Guide to Metal Roof Retrofit in Commercial Low-slope Roof Assemblies

A Guide to Vapor Retarder Design in Low-slope Roof Systems

A Guide to Cold Storage Roof System Design

A Guide to Using ASCE 7-16

Single-Ply Interactive Pro Field Guide

Tapered Insulation Design Guide

A Guide to Photovoltaic Installations on GAF Guaranteed Roofing Systems

Protection begins with innovation.

For more than a century, GAF has protected what matters most with a wide variety of high-performing commercial roofing products. 

EverGuard Extreme® TPO

Uses a proprietary formulation of stabilizers and UV absorbers to achieve high performance levels compared to industry standards.

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EnergyGuard
NH Polyiso Roof Insulation

Meets all the inherent properties and performance polyiso is known for, but without halogenated flame retardants. 

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EverGuard® TPO QuickSpray Adhesive

Our Quick Spray Adhesive offers up to 50% faster membrane installation than traditional bucket and roller adhesives.

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Flexible TPO Accessories

From the open roof field to the most complex corner detail, GAF TPO Flex Accessories help ensure consistent quality in both product and installation.

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LATEST FROM GAF ROOF VIEWS
Ventilation for steep-slope roof assemblies is often misunderstood. One must not only understand the code requirements, but be able to translate them into real-world installations. Building codes have requirements for ventilation of steep-slope attics and enclosed rafter spaces. Balanced ventilation — nearly equal amounts of intake and exhaust — typcially provides efficient ventilation. Transitions between low-slope and steep-slope roof areas require more distinct intake and exhaust details than traditional eaves/soffits and ridges.
Thermal insulation is an important part of commercial roofing assemblies. The aim of this article is to examine the factors influencing the thermal resistance, known as R-value of polyiso. The prediction of long term R-value and the influence of climate, i.e. temperature, have been of significant interest over the past few decades as building energy budgets have increased in importance. Recent discussions as to what R-value the designer should use and the importance of ambient temperature are reviewed and discussed.
Wind uplift is a primary concern when installing a retrofit single-ply roof system (RSPRS) over a structural metal panel roof. ASTM E 1592 physical testing was performed on three test roof assemblies in order to determine the wind uplift resistance of an RSPRS installed over existing structural metal panel roof systems fastened directly into purlins. This paper presents the findings and conclusions of that analysis.Read the full paper Physical Testing for Wind Resistance of Retrofit Single-Ply Roof Systems Over Structural Metal Panel Roof Systems.View more white papers from GAF on our Architect & Specifier Education Resource Page.
Is thermal mass a lost art form after centuries of use in temperate regions?In building design, the thermal mass of a building enables it to store heat, providing "inertia" against temperature fluctuations. It reduces the impact of external daily temperature swings on internal heating and cooling requirements. This thermal inertia has been an on-off again topic of discussion for some time. Proponents of adding thermal inertia point to Mediterranean area buildings constructed with thick stone walls and ceramic tile floors etc. Such buildings have kept occupants cooler than lighter weight buildings in many temperate areas of the world for centuries. In the quest to improve the energy efficiency of buildings, further gains are becoming increasingly harder to come by.

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