GAF is best known to most homeowners for shingles, but the company's commercial division produces a full range of low-slope roofing products that we spec regularly on flat and low-slope buildings around Evansville. Their commercial line covers TPO, PVC, modified bitumen, and traditional built-up systems.
GAF's EverGuard line covers both TPO and PVC single-ply membrane, produced in the standard thickness and color ranges used across the industry. EverGuard TPO uses the same heat-welded seam technology standard to the category, available for mechanically attached, fully adhered, or induction-welded installation depending on project requirements. EverGuard PVC targets the same chemical and grease-resistance applications any PVC membrane does, relevant for the kitchen exhaust and industrial exposure situations we see on plant and food-service roofs locally.
GAF's modified bitumen lines include Ruberoid and Liberty products, covering both SBS and APP modified asphalt roofing in self-adhered and traditional application formats. Liberty in particular is a self-adhered system, which reduces the fire risk concerns that come with torch application, a real consideration on occupied institutional buildings like schools and medical facilities where we're careful about open-flame installation methods.
For projects still using traditional built-up roofing, GAF manufactures GAFGLAS fiberglass ply sheets and related built-up roofing components. Built-up roofing has fallen out of favor for new installations compared to single-ply and modified bitumen systems, but it still comes up on recover and repair work on older institutional buildings around the region that were originally built with multi-ply asphalt systems.
GAF also produces polyiso insulation board and a line of roof coatings, including acrylic and silicone options, that we use on recoat and roof-extension projects for aging membrane and modified bitumen roofs. Coordinating coating chemistry with the existing membrane matters for adhesion and warranty purposes, which is part of why we identify the manufacturer of an existing roof before recommending a coating product.
GAF offers system warranties on commercial projects that use their approved components across the full assembly, similar to the structure most major manufacturers use. Warranty length and coverage terms vary by product line and the specific project scope, and we review those terms with the owner on any project where a manufacturer warranty is part of the deal.
GAF distributes commercial roofing product through the same kind of regional supply-house network as other major manufacturers, with standard EverGuard TPO typically available on short lead times given the volume GAF moves nationally through its residential and commercial combined distribution. Specialty products like specific Liberty self-adhered configurations or certain GAFGLAS components can run longer lead times depending on regional stock.
Manufacturer-backed system warranties on GAF commercial products generally require installation by a contractor who meets GAF's training and certification requirements for that specific product line. Warranty tiers vary in length and coverage depending on the installer's certification level and the specific components used across the assembly, and we review the exact requirements for a target warranty tier before finalizing a project scope.
GAF's dual presence in both residential and commercial roofing gives the company broad brand recognition among property owners, though we evaluate their commercial product specifications on technical merit against Carlisle, Versico, Holcim Elevate, Johns Manville, and Sika Sarnafil the same way we would any manufacturer comparison, rather than defaulting to brand familiarity. That comparison covers seam technology, reflectivity ratings, warranty length, and installer certification requirements, not only sticker price on the material order.
On institutional recover projects where GAFGLAS built-up components need to match an existing multi-ply roof assembly, sourcing compatible ply sheet and bitumen products from the original installing manufacturer, when known, simplifies both the technical match and any warranty continuity question the building owner may have from the prior roof system.
GAF operates both residential and commercial roofing product lines under the same parent company, though the commercial products are distinct systems designed for low-slope applications.
The two lines cover different modified bitumen formulations and application methods; we select between them based on the specific project's application method, fire code considerations, and roof design.
PVC's grease and chemical resistance comes largely from the base polymer chemistry common across major manufacturers' PVC lines, with performance differences typically tied more to installation quality and maintenance than brand alone.
Mixing components across manufacturers on a warrantied system is generally avoided since it can affect warranty eligibility; we keep component sourcing consistent with whichever manufacturer's warranty program applies to a project.
Yes, reflective white membrane and coating options are available across GAF's commercial TPO, PVC, and coating product lines.