DURO-TUFF™ 50 MIL MEMBRANE
Advantages:
Duro-Last
excellent choice for low-slope roof projects requiring a
long lasting, energy efficient roofing membrane. The
complete line of Duro-Last custom prefabricated
accessories is compatible with the Duro-Tuff
membrane.
Description:
Duro-Tuff membrane incorporates a weft insertion
knitted scrim within PVC films to provide exceptional
strength and waterproofing.
PVC Film - Proprietary thermoplastic PVC
formulation of resins, plasticizers, stabilizers,
biocides, flame retardants, and U.V. absorbents.
Scrim - An 18 x 9 polyester fabric construction
composed of 840 x 1000 denier threads provides
superior tear and puncture resistance. The polyester
thread is treated to prevent wicking.
Total Thickness – 50 mil, nominal.
Weight – 0.28 lb. per sq. ft.
Color – Top surface: white. Bottom surface: light
gray.
Packaging – DT50 is supplied in the roll sizes
shown below. A full pallet contains ten rolls.
Roll Dimensions:
Dimensions
120 in. x 100 ft. 950 sq. ft. 967 sq. ft. 280 lb.
60 in. x 100 ft. 450 sq. ft. 467 sq. ft. 140 lb.
30 in. x 100 ft. 200 sq. ft. 217 sq. ft. 70 lb.
10 in. x 100 ft. Stripping 24 lb.
6 inch overlap and use of Duro-Last Poly or Cleat Plates.
2
4 inch overlap and use of Duro-Last Oval Metal Plates.
Overlap Line – A green line, 6 inches from one
edge of the sheet, is factory applied to the top of the
sheet to assist in maintaining proper overlap
between sheets.
Seam Plate and Fastener Placement Guides –
“X”s are placed at 6-inch intervals along one edge of
the sheet to assist in maintaining proper spacing
between fasteners. Install fasteners so that the
outside edge of the seam plate is flush with the edge
of the sheet.
®
Duro-Tuff™ 50 mil (DT50) membrane is an
PVC film above scrim – 26 mils
PVC film below scrim – 17 mils
Estimated Coverage
6” Overlap
4” Overlap
Roll Weight
Energy Efficiency:
White DT50 membrane is an excellent product for
complying with California Title 24 and other energy
efficiency programs requiring the use of a highly
reflective roof membrane.
Cool Roof Rating Council (CRRC)
Initial 3-yr Initial 3-yr Initial 3-yr
White 0.85 P2 0.90 P2 107 P2
Duro-Last’s CRRC Product ID: 0610.
2
3-year aged results pending.
Solar
Reflectance
Thermal
Emittance
Warranty:
The following warranties are available for projects
utilizing DT50 membrane. Contact Duro-Last for
warranty details.
Available Warranties
10 Year Material Only
15 Year
20 Year
NDL High Wind Hail High Wind + Hail
Material Only Residential
NDL High Wind 15 + 5 Material
Material Only Residential
1
Solar Reflective
Index (SRI)
Duro-Last, “World’s Best Roof”, Duro-Bond, Duro-Tuff and Duro-Guard are registered marks owned by Duro-Last, Inc.
1 of 2 www.duro-last.com 800-248-0280
Updated: 11/21/2013
DURO-TUFF™ 50 MIL MEMBRANE
Codes and Standards:
Underwriters Laboratories
Storage:
Store rolls on their sides and on pallets. Use tarps to keep rolls dry.
Membrane Attachment:
Mechanically Fastened – DT50 membrane may be mechanically attached to a variety of roof deck and wall
materials. An appropriate slip sheet or cover board may be required. Refer to the Duro-Tuff Mechanically
Fastened System Specification for system requirements.
Duro-Bond
®
System – The Duro-Bond system (inductive weld) may be used to attach DT50 membrane. Refer
to the Duro-Last Duro-Bond System Specification for system requirements.
Adhered – DT50 membrane may be adhered to a variety of properly prepared roof decks, walls, cover boards
and insulations including structural concrete, Duro-Guard
SECUROCK
®
Gypsum-Fiber Roof Board, and Duro-Guard ISO products. Refer to the Duro-Last Adhered
®
DensDeck® Prime Roof Board, Duro-Guard
Systems Specification for system requirements.
Physical Properties:
DT50 membrane has been subjected to the tests required by ASTM 4434 “Standard Specification for Poly (Vinyl
Chloride) Sheet Roofing” and has been classified as a Type III, internally reinforced sheet. The results of each
test are listed below. Results of some tests are pending and this data sheet will be updated once the test results
are received.
Physical Property Test Method ASTM 4434 Requirement for Type III Sheet Typical Value
Overall Thickness ASTM D751
Breaking Strength1 ASTM D751 Grab Method
Elongation1 ASTM D751 Grab Method
Seam Strength ASTM D 751 Grab Method
Tear Strength1 ASTM D751 Procedure B
Low Temp. Bend ASTM D2136
Heat Aging ASTM D3045
Accelerated
Weathering
Dimensional Stability1 ASTM D1204
Water Absorption ASTM D570
Static Puncture ASTM D5602
Dynamic Puncture ASTM 5635
1
Typical values are shown for both machine and cross machine directions. The machine direction results are listed first.
ASTM G154
(formerly G53)
Conditioned for 56 days in oven
Irradiance level of 0.68 W/m2-nm.
4 hour condensation at 122 F.
Conditioned for 6 hours in oven
Immersed in water at 158 F
Allowable Weight Change: ≤ 3%
0.045 in.
200 lbf./in.
15%
235 lbf.
(75% of Breaking Strength)
45 lbf.
Must Pass at – 40 F
maintained at 176 F.
5,000 hour total test time.
Cycle: 8 hour at 145 F,
maintained at 176 F.
Allowable change: ≤ 0.5%
for 168 hours.
33 lbf. 33 lbf.
14.7 ft-lbf (20 J) 14.7 ft-lbf (20 J)
50 mil, nominal
405 x 292 lbf./in.
32% x 30%
278 lbf.
91 x 144 lbf.
PASS
PASS
PASS
-0.25% x -0.15%1
2.64%
Duro-Last, “World’s Best Roof”, Duro-Bond, Duro-Tuff and Duro-Guard are registered marks owned by Duro-Last, Inc.
2 of 2 www.duro-last.com 800-248-0280
Updated: 11/21/2013