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.

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.

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

A Guide to Photovoltaic Installations on GAF Guaranteed Roofing Systems

Air Barrier Guide

We're Here to Help

GAF Design Services is here to help answer questions, assist with code requirements and submittal
packages, and provide other valuable solutions at no charge.

Call us at 877-423-7663, option 4, then option 3
Email us at designservices@gaf.com

 

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.

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LATEST FROM GAF ROOF VIEWS
Think that your roof doesn't need protection against hail? Think again. Severe hail events are increasing in geographic footprint and are no longer just in hail alley. The geographic region that experiences 1 inch or larger hailstones has expanded to be nearly two-thirds of the United States. Nearly 10 percent more U.S. properties, more than 6.8 million, were affected by hail in 2021 than in 2020. Coinciding with the increase in properties affected by a damaging hail event in 2021, there was also an increase in insurance claims, which rose to $16.5 billion from $14.2 billion in 2020.
Introduction We all recognize that, when properly installed, TPO can be part of a well performing roof system. However, a very simple error made during installation can set up the membrane for future issues. This has been known since early installations of TPO roofs but somehow it has been forgotten about by many installers. What are we talking about here? The use of adhesive buckets along a fold that causes premature cracking of the membrane years after installation. Let's dig deeper.
Architects strive to achieve a roof design that strikes a delicate balance between aesthetics and performance. Achieving high-performance means incorporating the code, warranty, and guarantee requirements that building owners must meet — among the most important factors of any construction project — into design vision. This isn't made any easier by the sheer number of roofing systems available. Even experienced architects can find it challenging to get familiar with all available components and positively identify which materials are going to deliver the ultimate protection for the building.
Several changes have been included in the 2022 version of ASCE 7 as they relate to the roof. You may be thinking, 'as soon as I mastered ASCE 7-16, an updated version is set to be released!'. As with any Standard, it can be expected that updates will be made to include current research or trends. While the inclusion of tornado loads and the resulting changes in the load combinations may be the most significant, there are other updates that affect roofing as well. From minor updates to basic wind speed maps, to stepped roofs, and pavers, we have compiled a summary to help you navigate the updates. Not to fret, the changes are likely to not be incorporated until the 2024 version of IBC. However, that does not preclude incorporating these changes on current and upcoming projects.

Design Professionals, download our quick reference guide for your next roofing project.

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