Duro-Last DTC50 Membrane - Manual (Page 2)

Duro-Last, “World’s Best Roof”, Duro-Bond, Duro-Tuff and Duro-Guard are registered marks owned by Duro-Last, Inc.
Created: 01/16/2014
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DURO-TUFF ® COLORS 50-MIL MEMBRANE
Codes and Standards:
Underwriters Laboratories
Storage:
Store rolls lengthwise on pallets. Use tarps to keep rolls dry.
Membrane Attachment:
Mechanically Fastened – DTC50 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 DTC50 membrane.
Refer to the Duro-Last Duro-Bond System Specification for system requirements.
Adhered – DTC50 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:
DTC50 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  0.045 in. 50-Mil, nominal
Breaking Strength 1 ASTM D751 Grab Method  200 lbf./in. 405 x 292 lbf./in.
Elongation 1 ASTM D751 Grab Method  15% 32% x 30%
Seam Strength ASTM D 751 Grab Method
 235 lbf.
(75% of breaking strength)
278 lbf.
Tear Strength 1 ASTM D751 Procedure B  45 lbf. 91 x 144 lbf.
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.
PASS
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.
PASS
Dimensional Stability 1 ASTM D1204
Conditioned for 6 hours in oven
maintained at 176 F.
Allowable change: ≤ 0.5%
-0.25% x -0.15% 1
Water Absorption ASTM D570
Immersed in water at 158 F
for 168 hours.
Allowable weight change: ≤ 3%
2.64%
Static Puncture ASTM D5602  33 lbf.  33 lbf.
Dynamic Puncture ASTM 5635  14.7 ft-lbf (20 J)  14.7 ft-lbf (20 J)
1 Typical values are shown for both machine and cross machine directions. The machine direction results are listed first.