Glasbase™ Base Sheet

Overview
GlasBase Base Sheet is CertainTeed's workhorse, non-modified base sheet, suitable as a starter course under BUR ply sheets or modified asphalt cap sheets applied with a torch, hot asphalt, or cold adhesive such as FlintBond Brush. This 40 mil permeable base sheet is manufactured with a strong, dimensionally stable fiberglass reinforcement. GlasBase is most commonly mechanically attached but may serve as a non-penetrated base ply when mopped with hot asphalt or FlintBond Brush cold adhesive. In addition, it will perform as a venting base sheet when spot mopped over plastic foam type insulations.

Reach out to your local CertainTeed Territory Manager to request a sample and demonstration of GlasBase Base Sheet.

Features & Benefits

Quick Specs
-Permeable, non-modified ply Sheet
-Fiberglass reinforcement
-75 lbs.
-3 Squares
-1.0 mm (40 mils)

Performance
-Meets or exceeds D4601, Type II, UL G2
-Strong

Why Buy
-Workhorse, economical base sheet
-Budget-conscious 2-ply modified bitumen roof systems where 12-year warranty durations are desired

Warranty
-Standard asphaltic membrane warranty durations between ten and twenty-five years
-Credentialed Contractors can increase warranty durations by 25% with an Integrity Maintenance Agreement
-Product and Product/Workmanship options: Limited Warranty on Materials, Integrity Roof System Limited Warranty, and Integrity Roof System No Dollar Limit (NDL) Limited Warranty

Warranty durations are based on a combination of system specification and product selection.