CertainTeed All Weather/Empire® Base Sheet is designed for use as a base sheet for both hot and cold applied, built-up roofing (BUR) systems. All Weather/Empire Base Sheet provides additional strength, moisture resistance and asphalt uniformity when used as the first ply over nailable, non-nailable and insulated substrates.

Technical Information

The following information represents typical average properties of All Weather/Empire® Base Sheet:

  • Support Mat: Fiber glass base mat
  • Surfacing: Mineral release agent
  • Approximate Product Weight: 70 lbs. per roll
  • Dimensions: 39-3/8" x 65'' 10" (216 square feet)
  • Coverage: Two Squares
  • Thickness: 1.3mm (50 mils)
  • ASTM D4601, Type II
  • ASTM D6757

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


Roof systems constructed with All Weather/Empire® Base Sheet as the base ply shall be applied in accordance with installation procedures contained in the CertainTeed Commercial Roof Systems Manual.

For details on installion, please refer to the CertainTeed Commercial Roof Systems Manual or the product installation instructions.

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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