Duro-Last DL60 Membrane - Manual (Page 2)

Duro-Last, “World’s Best Roof”, Duro-Bond and Duro-Guard are registered marks owned by Duro-Last, Inc.
Updated: 11/13/2013
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DURO-LAST ® 60 MIL MEMBRANE
Codes and Standards:
Underwriters Laboratories (US & Canada), FM Approvals, ICC-ES (ESR-1660), Canadian Construction
Materials Centre (CCMC 13299-L), State of Florida, Miami-Dade County, Texas Department of Insurance.
Storage:
Store rolls on their sides and on pallets. Use tarps to keep rolls dry.
Membrane Attachment:
Mechanically Fastened – DL60 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-Last Mechanically
Fastened Systems Specification for system requirements.
Duro-Bond ® System – The Duro-Bond system (inductive weld) may be used to attach DL60 membrane. Refer
to the Duro-Last Duro-Bond System Specification for system requirements.
Adhered – DL60 membrane may be adhered to a variety of properly prepared roof decks, walls, cover boards
and insulations including Duro-Guard™ ISO products, DensDeck
® Prime Roof Board and SECUROCK®
Gypsum-Fiber Roof Board. Refer to the Duro-Last Adhered Systems Specification for system requirements.
Physical Properties:
DL60 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 as well as typical values are listed below.
Physical Property Test Method ASTM 4434 Requirement Result Typical Value
Overall Thickness 1 ASTM D751  0.045 in. PASS 60 mil, nominal
Breaking Strength 1 ASTM D751 Grab Method  200 lbf./in. PASS 390 lbf x 438 lbf 1
Elongation 1 ASTM D751 Grab Method  15% PASS 31% x 31% 1
Seam Strength ASTM D 751 Grab Method
 293 lbf
(75% of Breaking Strength)
PASS 431 lbf
Tear Strength 1 ASTM D751 Procedure B  45 lbf. PASS 132 lbf x 163 lbf 1
Low Temp. Bend ASTM D2136 Must Pass at – 40 F PASS PASS
Heat Aging ASTM D3045
Conditioned for 56 days in oven
maintained at 176 F
PASS PASS
Accelerated Aging
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 PASS
Dimensional Stability 1 ASTM D1204
Conditioned for 6 hours in oven
maintained at 176 F.
Allowable change: ≤ 0.5%
PASS -0.45% x -0.20% 1
Water Absorption ASTM D570
Immersed in water at 158 F
for 168 hours.
Allowable Weight Change: ≤ 3%
PASS 2.6%
Static Puncture ASTM D5602  33 lbf PASS 56 lbf
Dynamic Puncture ASTM 5635  14.7 ft-lbf (20 J) PASS  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.
Additional Tests
Fungi Resistance ASTM G-21 No Sustained growth or discoloration
Moisture Vapor Transmission ASTM E96, Proc. B, Method A < 0.35 U.S. Perms