DURO-LAST® 60-MIL MEMBRANE

Advantages:
Duro-Last® 60-Mil (DL60) is an excellent choice for
projects requiring a long lasting, energy efficient
roofing membrane. The membrane is available in
custom-fabricated sections or as roll goods. A
complete line of custom-fabricated accessories and
parapets are available for use with DL60.
Description:
DL60 is composed of PVC film laminated to both sides
of a reinforcement fabric (weft-inserted scrim).
Duro-Last membranes must not be used with Cool Roof Rating Council (CRRC)
Duro-Last EV membranes. Solar
CRRC Solar Thermal
Reflective
PVC Film – Proprietary thermoplastic PVC ID Reflectance Emittance
Index (SRI)
formulation of resins, plasticizers, stabilizers, Initial 3-yr Initial 3-yr Initial 3-yr
biocides, flame retardants, and U.V. absorbents. 0610-
White 0.86 0.74 0.89 0.89 108 91
0001a
 PVC film above weft-inserted scrim – 28 mil,
0610-
nominal Tan
0005
0.39 0.33 0.89 0.89 43 35
Weft-Inserted Scrim – An 18 x 14 polyester fabric 0610-
Gray 0.47 0.40 0.87 0.89 54 45
construction with weft insertion, composed of 840 x 0004
1000 denier threads, provides superior tear and Dark Gray
0610-
0.26 0.25 0.88 0.89 26 25
puncture resistance. The polyester thread is treated 0006
to prevent wicking. LEED & LEED-EB Credits – White DL60 alone can
Total Thickness – 60 mil, nominal. obtain 1 credit in either U.S. Green Building
Council’s LEED or LEED-EB programs. In
Weight – 0.36 lb. per square foot.
combination with other design criteria the membrane
Colors – White, tan, gray and dark gray. may help attain other credits.
R-Value – 0.1 R (0.1 ft2ꞏ°Fꞏhr/Btu). LEED Credit Category Duro-Last Attribute
Available Configurations: Sustainable Sites Credit 7.2 Solar Reflective Index (SRI)
Custom-fabricated Sections – DL60 is available in Heat Island Effect: Roof SRI = 111
custom-fabricated sections as listed within the LEED-EB Credit Category Duro-Last Attribute
Ordering and Estimating section on the Duro-Last Sustainable Sites Credit 6.2 ENERGY STAR Qualified
website. Heat Island Effect: Roof Thermal Emittance = 0.87
Roll Dimensions1 Warranty:
Length Approx. Approx. The following warranties are available for projects
Width Roll Area
(max.) Weight Coverage2 utilizing DL60. Contact Duro-Last for warranty details.
64 inches 100 ft. 533 sq. ft. 192 lb. 483 sq. ft. Available Warranties
64 inches 50 ft. 267 sq. ft. 97 lb. 241 sq. ft. 20-Year NDL
20-Year NDL
32 inches 100 ft. 267 sq. ft. 97 lb. 217 sq. ft. Warranty
Warranty
12 inches 100 ft. 100 sq. ft. 36 lb. N/A – 15 Years
15-Year NDL – 15 Years
8 inches 100 ft. 67 sq. ft. 25 lb. N/A Supreme Consequential
Warranty Consequential
Damages And 5
1 Custom rolls of maximum 64 in. by 240 ft. may be produced upon request. Damages And 5
2 Assuming 6-inch overlap. Years Material
Years Material
and Labor
Energy Efficiency: 15-Year 15-Year 20-Year 25-Year
15-Year
White DL60 is an excellent product for complying with Ultra NDL Hail
NDL Hail & NDL High NDL High NDL High
High Wind Wind Wind Wind
California Title 24, LEED® and other energy efficiency Warranty1
Warranty1 Warranty1 Warranty1 Warranty1, 2
programs requiring the use of a highly reflective roof 15-Year NDL 20-Year NDL 25-Year NDL
membrane. Basic
Warranty1 Warranty1 Warranty1, 2
15-Year Residential 20-Year Residential
Residential
Material Limited Warranty1 Material Limited Warranty1
1 Excludes consequential damage coverage.
2 Refer to the 25 and 30-Year Warranty Requirements for additional installation criteria.

www.duro-last.com 1 of 2 800-248-0280
Duro-Last, “World’s Best Roof”, and Duro-Bond are registered trademarks owned by Duro-Last, Inc.
LEED is a registered trademark owned by the U.S. Green Building Council. ENERGY STAR is a registered trademark owned by the U.S. Environmental Protection Agency.
Created: 09/01/2012 Revised: 11/13/2013, 05/28/2014, 06/05/2014, 01/23/2015, 05/18/2015, 01/22/2016, 02/15/2016, 08/15/2017, 03/29/2019, 09/23/2021
 DURO-LAST® 60-MIL MEMBRANE

Codes and Standards:

Underwriters Laboratories (US & Canada), UL Evaluation Report (ER10128), FM Approvals, Canadian
Construction Materials Centre (CCMC 13299-L), State of Florida, Miami-Dade County, Texas Department of
Insurance.
Storage:
Store rolls lengthwise on pallets. Use tarps to keep rolls dry.
Membrane Attachment:
Mechanically Fastened – DL60 may be mechanically fastened to a variety of roof deck and wall materials. An
appropriate slip sheet, insulation or cover board may be required. Refer to the Duro-Last Mechanically
Fastened Roofing System Specification for custom-fabricated system requirements. If using roll goods, refer to
the Duro-Last Roll Good Mechanically Fastened Roofing System Specification.
Induction welded – Induction welding may be used to attach DL60. An appropriate slip sheet, insulation or
cover board may be required. Refer to the Duro-Bond® Induction Weld Roofing System Specification for system
requirements.
Adhered – DL60 may be adhered to a variety of properly prepared roof decks, walls, cover boards and
insulations. Refer to the Adhered Roofing System Specification for system requirements.
Physical Properties:
DL60 has been subjected to the tests required by ASTM D4434 “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. ASTM’s Overall Thickness requirements for the membrane are plus or minus 10% (nominal) of the
listed Typical Value.
Physical Property Test Method ASTM D4434 Requirement Result Typical Value
 0.054 and ≤ 0.066 in.
Overall Thickness ASTM D751 PASS 0.060 in. (60 mil), nominal
( 54 and ≤ 66 mil)
Thickness Over Scrim ASTM D7635  0.016 in. PASS 0.028 in. (28 mil)
Breaking Strength1 ASTM D751 Grab Method  200 lbf./in. PASS 438 x 390 lbf./in.
Elongation 1
ASTM D751 Grab Method  15% PASS 31% x 31%
 328 lbf.
Seam Strength ASTM D751 Grab Method PASS 431 lbf.
(75% of Breaking Strength.)
Tear Strength1 ASTM D751 Procedure B  45 lbf. PASS 132 x 163 lbf.
Low Temp. Bend ASTM D2136 Must pass at -40 F. PASS PASS
Conditioned for 56 days in oven
Heat Aging ASTM D3045 PASS PASS
maintained at 176 F.
10,000 hours total test time.
Irradiance level of 0.35 W/m2-340nm.
Accelerated Aging ASTM G155 Cycle: 102 minutes light, 18 minutes PASS PASS
light + H20 spray, 63±2.5° C black
panel, 30±5% RH
Conditioned for 6 hours in oven
Dimensional Stability1 ASTM D1204 maintained at 176 F. PASS -0.45% x -0.20%
Allowable change: ≤ 0.5%
Immersed in water at 158 F
Water Absorption ASTM D570 for 168 hours. PASS 2.6%
Allowable weight change: ≤ 3%
Static Puncture ASTM D5602  33 lbf. PASS 56 lbf.
Dynamic Puncture ASTM D5635  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 G21 No Sustained Growth or Discoloration
Moisture Vapor Transmission ASTM E96, Proc. B, Method A < 0.35 U.S. perms

www.duro-last.com 2 of 2 800-248-0280
Duro-Last, “World’s Best Roof”, and Duro-Bond are registered trademarks owned by Duro-Last, Inc.
LEED is a registered trademark owned by the U.S. Green Building Council. ENERGY STAR is a registered trademark owned by the U.S. Environmental Protection Agency.
Created: 09/01/2012 Revised: 11/13/2013, 05/28/2014, 06/05/2014, 01/23/2015, 05/18/2015, 01/22/2016, 02/15/2016, 08/15/2017, 03/29/2019, 09/23/2021