Duro-Last DT80 Membrane User Manual
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Duro-Last, “World’s Best Roof”, Duro-Bond, Duro-Tuff and Duro-Guard are registered marks owned by Duro-Last, Inc.
Created: 01/09/2014
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www.duro-last.com 800-248-0280
DURO-TUFF
®
80 MIL MEMBRANE
Codes and Standards:
Underwriters Laboratories
Storage:
Store rolls lengthwise on pallets. Use tarps to keep rolls dry.
Membrane Attachment:
Mechanically Fastened – DT80 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 DT80 membrane. Refer
to the Duro-Last Duro-Bond System Specification for system requirements.
Adhered – DT80 membrane may be adhered to a variety of properly prepared roof decks, walls, cover boards
and insulations including structural concrete, Duro-Guard
®
DensDeck
®
Prime Roof Board, Duro-Guard
SECUROCK
®
Gypsum-Fiber Roof Board, and Duro-Guard ISO products. Refer to the Duro-Last Adhered
Systems Specification for system requirements.
Physical Properties:
DT80 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.
Physical Property
Test Method
ASTM 4434 Requirement for Type III Sheet
Typical Value
Overall Thickness
ASTM D751
0.045 in.
80 mil, nominal
Breaking Strength
1
ASTM D751 Grab Method
200 lbf./in.
481 x 341 lbf./in.
1
Elongation
1
ASTM D751 Grab Method
15%
33% x 33%
1
Seam Strength
ASTM D 751 Grab Method
255 lbf.
(75% of Breaking Strength)
Pending
2
Tear Strength
1
ASTM D751 Procedure B
45 lbf.
53 x 196 lbf.
1
Low Temp. Bend
ASTM D2136
Must Pass at – 40
F.
PASS
Heat Aging
ASTM D3045
Conditioned for 56 days in oven
maintained at 176
F.
Pending
2
Accelerated
Weathering
ASTM G154
(formerly G53)
5,000 hour total test time.
Irradiance level of 0.68 W/m2-nm.
Cycle: 8 hour at 145
F,
4 hour condensation at 122
F.
Pending
2
Dimensional Stability
1
ASTM D1204
Conditioned for 6 hours in oven
maintained at 176
F.
Allowable change: ≤ 0.5%
-0.10% x -0.10%
1
Water Absorption
ASTM D570
Immersed in water at 158
F
for 168 hours.
Allowable weight change: ≤ 3%
0.10%
Static Puncture
ASTM D5602
33 lbf.
PASS
Dynamic Puncture
ASTM 5635
14.7 ft-lbf. (20 J)
PASS
1
Typical values are shown for both machine and cross machine directions. The machine direction results are listed first.
2
Values will be added upon completion of testing.