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®
DURO-TUFF 80-MIL MEMBRANE

Advantages:
®
®
Duro-Last Duro-Tuff 80-Mil (DT80) membrane is an
excellent choice for low-slope roof projects requiring a
long lasting, energy efficient roofing membrane. A
complete line of custom prefabricated accessories is
available for the DT80 membrane.
Description:
Duro-Tuff membrane incorporates a weft-inserted,
knitted scrim within PVC films to provide exceptional
strength and waterproofing.
Duro-Tuff membranes must not be used with
Duro-Last EV membranes.

PVC Film - Proprietary thermoplastic PVC
formulation of resins, plasticizers, stabilizers,
biocides, flame retardants, and U.V. absorbents.
 PVC film above weft-inserted scrim – 41 mil
Weft-Inserted Scrim - An 18 x 9 polyester fabric
construction with weft insertion, composed of 840 x “T-Lap” Patches – A patch, with rounded corners,
1000 denier threads, provides superior tear and is required at all lap areas where 3 or more layers of
puncture resistance. The polyester thread is treated membrane intersect (“T-Lap”). The minimum size of
to prevent wicking. the patch is 4 x 4 inches or 4-inch diameter. Patches
Total Thickness – 80 mil, nominal. can be made of either DT or DL membrane of any
thickness. Refer to Detail Drawing DT1066.
Weight – 0.51 lb. per square foot.
Energy Efficiency:
Color – Top surface: white. Bottom surface: light White DT80 membrane is an excellent product for
gray.
complying with California Title 24 and other energy
2
R-Value – 0.1 ft ·°F·hr/Btu. efficiency programs requiring the use of a highly
reflective roof membrane.
Packaging – DT80 is supplied in the roll sizes
1
shown below. A full pallet contains ten rolls. Cool Roof Rating Council (CRRC)
Roll Dimensions: Solar Thermal Solar Reflective
Estimated Coverage Reflectance Emittance Index (SRI)
Dimensions 1 2 Roll Weight
6” Overlap 4” Overlap Initial 3-yr Initial 3-yr Initial 3-yr
120 in. x 65 ft. 617 sq. ft. 628 sq. ft. 335 lb. White 0.85 0.73 0.89 0.88 108 90
60 in. x 65 ft. 292 sq. ft. 303 sq. ft. 170 lb. 1 Duro-Last’s CRRC Product ID: 0610.
30 in. x 65 ft. 130 sq. ft. 140 sq. ft. 85 lb.
10 in. x 65 ft. Stripping 30 lb. Warranty:
1 6 inch overlap and use of Duro-Last Poly or Cleat Plates.
2 The following warranties are available for projects
4 inch overlap and use of Duro-Last Oval Metal Plates.
utilizing DT80 membrane. Contact Duro-Last for
Overlap Line – A blue line, 6 inches from one edge warranty details. Consequential damage coverage
of the sheet, is factory applied to the top of the sheet is not available for Duro-Tuff installations.
to assist in maintaining proper overlap between
sheets. Available Warranties
Supreme Not applicable for this product
Seam Plate and Fastener Placement Guides –
“X”s are placed at 6-inch intervals along one edge of Ultra 15-YR High Wind 20-YR High Wind
the sheet to assist in maintaining proper spacing Basic 15-YR NDL 20-YR NDL
between fasteners. Install fasteners so that the
outside edge of the seam plate is flush with the edge Residential 15-YR Material Only 20-YR Material Only
of the sheet.

www.duro-last.com 1 of 2 800-248-0280
Duro-Last, “World’s Best Roof”, Duro-Bond, and Duro-Tuff are registered trademarks owned by Duro-Last, Inc.
Created: 01/09/2014 Revised: 05/13/2014, 06/10/2014, 01/23/2015, 05/18/2015, 07/06/2015, 02/15/2016, 06/29/2016