Please ensure Javascript is enabled for purposes of accessibility Flintlastic® SA MidPly | CertainTeed Skip to main content

Mega Menu


CertainTeed's Flintlastic® SA MidPly is the premium self-adhered base or interply used within Flintlastic® SA, fully self-adhered low-slope roof systems, when extended warranties are desired. Flintlastic® SA MidPly may also be used in a hybrid system with a torch-applied cap sheet. This 110-mill membrane is manufactured with heavy-duty glass reinforcement saturated and coated with SBS-modified bitumen, offering exceptional durability. The proprietary top surface film promotes immediate and long-term adhesion to Flintlastic® SA self-adhered membranes. Flintlastic® SA MidPly may be directly adhered to any approved low-slope roofing substrate. Flintlastic® SA offers S.A.F.E roofing - Speed, Affordability, Fume & Flame Free, and Easy to Learn. SPEED. CertainTeed commissioned a third party comparison of labor efficiencies across multiple popular low-slope roof systems including multi-layer modified bitumen and single-ply systems. A two or three ply Flintlastic® SA system instal...See More

Features & Benefits

Quick Specs
• SBS-modified • Fiberglass reinforcement • 63 lbs. • 1 Square • 2.8 mm (110 mils)
• Meets or exceeds ASTM D6163, Grade S, Type I and D1970 • Proprietary top film promotes immediate and long-term bond • Pliable even in cold temperatures • Excellent elongation/recovery
Why Buy
• Up to 31 1/4 year warranty available with two-ply system for Credentialed Contractors (25 years standard) • Tried and true modified bitumen protection • Significantly reduced labor vs traditional mod-bit or single-ply • No fumes, no flame, no kettle - no occupant disruption • Easy to learn, Easy to install - pre-printed measurements and lap guidelines
• 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.

Have More Questions?

Whether you're just starting a new project or are already in the swing of things, our customer experience team is here to help!

Contact Us