Revision context
Document record
This two-page product data sheet covers Duro-Last DL60, a 60-mil PVC roofing membrane. The file states that the sheet was created on September 1, 2012 and revised on October 14, 2025. DL60 is PVC film laminated to both sides of a weft-inserted polyester scrim, with 28-mil nominal film above the scrim. It weighs 0.36 pounds per square foot, has an R-value of 0.1, and comes in white, tan, gray and dark gray.
Roll sizes listed are 64 inches by 100 feet, 64 inches by 50 feet, 32 inches by 100 feet, 12 inches by 100 feet and 8 inches by 100 feet, The attachment section covers mechanically fastened, induction welded and adhered systems.
Cool Roof Rating Council rows for each color give initial and three-year solar reflectance, thermal emittance and SRI. White reads 108 initial and 85 after three years. A LEED table lists the white membrane’s SRI of 108 under heat island reduction. The file names UL Evaluation Report ER10128, FM Approvals, CCMC 13299-L, State of Florida, Miami-Dade County and Texas Department of Insurance.
The physical properties table tests the membrane to ASTM D4434 as a Type III, internally reinforced sheet, and it also meets Type II requirements. The warranty table lists Supreme, Ultra, Basic and Residential options, with NDL terms of 15 to 25 years and footnotes on consequential damage coverage.
Material changes / notes
Official source checked September 19, 2026. Confirm the applicable revision and complete assembly requirements before use.