CertainTeed Flintlastic GTS-FR CoolStar is a premium, SBS modified, heavyweight polyester mineral surfaced cap sheet with reflective CoolStar granules. It is designed for use as a roofing membrane over various types of substrates for both new construction and roofing installations. It is suitable for most low slope roof applications and may be used for roof system flashings including wall treatments, base flashings and field flashings.

  • Granulated, uncoated finish
  • Handles like standard product - no special installation requirements
  • Low maintenance
  • More consistent
  • More aesthetically pleasing

Flintlastic GTS-FR CoolStar meets or exceeds ENERGY STAR® requirements and can be installed to meet the requirements established by California Title 24. Visit www.coolroofs.org or www.energystar.gov for more information.

Technical Information

CertainTeed Flintlastic® GTS-FR CoolStar is produced with a high performance, non-woven polyester mat which is impregnated and coated with a superior grade, modified bitumen compound, and surfaced with highly reflective CoolStar Granules.

  • Top Surface: Highly reflective CoolStar granules
  • Back Surface: Torchable polyethylene film
  • Weight: 105 lbs. per roll
  • Dimensions: 39 3/8" x 32' 10" (100 sq. ft.)
  • Thickness: 4.0mm (160 mils)
  • Coverage: 1 square
  • ASTM D6164, Grade G, Type II

For additional technical resources please refer to the CertainTeed Commercial Roof Systems Manual


CertainTeed Flintlastic® GTS-FR CoolStar® 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 fro 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 installation details, please refer to the CertainTeed Roof Systems Manual or the Flintlastic Application Manual.

Warranty Details

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

  • Limited Product Warranty
  • NDL Roof Membrane 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 or project.

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

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