 The
Duro-Last roofing system membrane is a proprietary thermoplastic
formulation consisting of resins and plasticizers, stabilizers,
biocides, flame retardants and U.V. absorbents. A weft-insertion
knitted scrim that is laminated between two layers of film gives the
membrane its strength and durability. The Duro-Last membrane is
available in white, tan or gray.
Duro-Last
has met or exceeded all major fire and wind code requirements, and
regional approvals as necessary throughout the country. These
certifications reinforce Duro-Last’s leadership in providing the
consistent, watertight integrity that building owners expect.
Duro-Last
has been approved by Factory Mutual as a 1-60,1-90, 1-105, 1-150 and
1-210 roofing system. Duro-Last is also listed by Underwriters
Laboratories as a UL Class A material. Evaluation services ICBO and NES
have merged to form ICC-ES, which has evaluated Duro-Last for the
International Building Code (IBC). The Duro-Last roofing system has
been approved by the IBC and by code agency MIAMI-DADE for use in their
respective jurisdictions.
Duro-Last is
proud to be a charter partner of the ENERGY STAR® Roof Products
Program. The ENERGY STAR label indicates to building owners and
managers that the Duro-Last white membrane can save them money on
cooling costs due to its high reflectivity (reflects over 86% of the
sun’s energy). Duro-Last is also a charter member of the Cool Roof
Rating Council (CRRC) and a member of the United States Green Building
Council (USGBC). Duro-Last participates in all major technical
committees in the roofing industry, plus the American Society of
Testing Materials (ASTM).
 | 
