Flintlastic® STA Plus is a premium, APP-modified bitumen, versatile, smooth-surface membrane. 

It is designed for use as a robust base, interply or cap membrane (warranty may require coating) over various types of substrates for both new construction and reroofing installations. 

Flintlastic STA Plus is produced with a high-performance, stress-resistant polyester matt which is impregnated and coated with a superior grade, APP-modified bitumen compound.

Technical Information

CertainTeed Flintlastic STA Plus is produced with a high performance, stress-resistant polyester mat which is impregnated and coated with a superior grade, APP-modified bitumen compound.

  • Support Mat:  High performance, puncture and tear resistant, non-woven polyester mat
  • Top Surface: Smooth, Fine sand, release agent
  • Back Surface: Torchable Polyethylene Film
  • Dimensions: 39 3/8" x 32' 10"
  • Coverage: One Square
  • Thickness: 4.5mm (180 mils)
  • Meets ASTM D6222, Grade S, Type 1


CertainTeed Flintlastic STA Plus is intended for torch application only and should not be exposed to adhesives or solvent based materials.  Rolls should be stored upright, off ground, completely protected from the weather.  Roof decks shall be structurally sound, dry, smooth and meet or exceed minimum requirements of the deck manufacturer, local code and CertainTeed.

For detailed installation instructions please refer to the CertainTeed Commercial Roof Systems Specifications.

Warranty Details

CertainTeed backs its commercial roofing systems with the confidence of three warranty choices:

  • Limited Product Warranty
  • NDL Limited Warranty*
  • Full System NDL Limited Warranty*

Owners and specifiers who choose the NDL or Full System NDL warranty options have the added security of manufacturer involvement in the sometimes difficult process of contractor qualifying and workmanship inspection.  Consult with the roofing contractor and your CertainTeed commercial roofing territory manager to decide which CertainTeed warranty is best for your building project.

*NDL warranties are not available on all specifications and are only available through CertainTeed Gold and Silver Star Contractors


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