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CertainTeed's Flintlastic® Base 20 is a robust SBS-modified bitumen base sheet, delivering the benefits of a homogenous roof system when paired with SBS-modified bitumen cap sheets such as Flintlastic® GMS, Flintlastic® FR-P and Flintlastic® Premium FR-P. Many members of the design and specification community prefer multi-layer modified bitumen roof systems constructed with the same polymer-modified material and application methodology for base and/or interply and cap sheets, to optimize stress resistance to the roof system with materials expanding and contracting at the same rate. This 92 mil base sheet is manufactured with tough, dimensionally stable fiberglass reinforcement that is highly resistant to tearing and punctures. The fiberglass mat is saturated and coated with an SBS-modified asphalt with elastic, waterproofing properties. Flintlastic® Base 20 can be mechanically attached but is more commonly mopped with hot asphalt or cold adhesive, such as FlintBond® Brush to...See More

Features & Benefits

Quick Specs
• SBS-modified base ply • Fiberglass reinforcement • 88 lbs. • 1.5 Squares • 2.3 mm (92 mils)
• Meets or exceeds ASTM D6163 , Grade S, Type 1 • Pliable even in cold temperatures • Excellent elongation/recovery
Why Buy
• Projects where mopped, SBS-modified bitumen roof system is preferred or specified • Tried and true modified bitumen protection • Robust base ply allows for extended warranties when mopped in hot asphalt or cold adhesive
• 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.
Two rolls of FlintLastic Base 20 on a white background.

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