About GAFGLAS® STRATAVENT® Perforated Venting Base Sheet

GAFGLAS® STRATAVENT® Perforated Venting Base Sheets are unique in the industry: the patented perforated design allows mopping asphalt to flow through to the substrate as the next ply of the roof system is installed.

The flow-through asphalt uniformly bonds the GAFGLAS® STRATAVENT® Perforated Venting Base Sheet and the subsequent roof system to the substrate. It also offers excellent wind uplift-resistance (FMRC Approved up to Class 1-345 — See FM Approval Guide for details). 

GAFGLAS® STRATAVENT® Perforated Venting Base Sheets are fire resistant— for use in UL, ULC Class A rated assemblies — and system guarantees are available for up to 20 years.

Product Documentation

GAFGLAS® STRATAVENT® Perforated Venting Base Sheet

SBS, APP & BUR roof system product comparisons

Any discussion on asphaltic roofing will involve one or more of these three terms: SBS (Styrene-Butadiene-Styrene), APP (Atactic Polypropylene), and BUR (Built-up roofing). SBS and APP are polymers with unique characteristics, and membranes made with them are classified by ASTM numbers, types and grades. BUR is an assembly method in which multiple layers of felts are installed with hot asphalt in-between.
GAFGLAS® STRATAVENT® Perforated Venting Base Sheet

Asphaltic Membrane Installation Methods

One of the many reasons asphaltic roofing remains so popular is the wide variety of installation methods available. Depending on specifications, building characteristics and use cases, asphalt roofs can be hot-mopped, heat-welded/torch-applied, cold-applied (adhered), self-adhered, or mechanically attached. Find more about these techniques.
Asphaltic Roofing 101 Playlist from GAF Commercial

Asphaltic Commercial Roofing 101

Proven historical performance. Time tested durability. Asphaltic roofing products are a go-to material of choice for high end low-slope buildings. Learn more about asphaltic technologies and application techniques, as well as how to decide if asphaltic is the right roofing solution for your next project.

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