Duro-Last DF50 Membrane - Manual

Duro-Last, “World’s Best Roof”, Duro-Fleece and Duro-Guard are registered marks owned by Duro-Last, Inc.
Updated: 11/21/2013
DURO-FLEECE
™
50 MIL MEMBRANE
1 of 2 www.duro-last.com 800-248-0280
Advantages:
Duro-Last ® Duro-Fleece ® 50 mil (DF50) membrane is
an excellent choice for projects requiring a long
lasting, energy efficient roofing membrane. The
combination of fleece and the proven performance of
Duro-Last roofing membrane results in an ideal
product for use in adhered and mechanically attached
applications over a wide variety of roof substrates. The
complete line of Duro-Last custom prefabricated
accessories is compatible with the DF50 membrane.
Description:
In addition to the fleece, DF50 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.
 PVC film above scrim – 28 mil
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.
Fleece - The 3.8 ounce per square yard needle-
punched polypropylene fleece provides excellent
properties for adhering to, or mechanically attaching
over, a variety of substrates. Each roll of membrane
has one selvage edge where the fleece is held back
3 inches to provide for hot-air welding to the
underlying membrane.
Total Membrane Thickness – 50 mil, nominal.
Overall Thickness (with Fleece) – 68 mil.
Weight – 0.33 lb. per sq. ft.
Color – White.
Available Configurations:
Roll Good – Dimensions
Product
Name
Dimensions
Estimated
Coverage
Roll Weight
DF50
10 ft. x 100 ft.
5 ft. x 100 ft.
975 sq. ft.
475 sq. ft. 335 lb.
165 lb.
Energy Efficiency:
White DF50 membrane is an excellent product for
complying with California Title 24, LEED and other
energy efficiency programs requiring the use of a
highly reflective roof membrane.
Cool Roof Rating Council (CRRC) 1
Solar
Reflectance
Thermal
Emittance
Solar Reflective
Index (SRI)
Initial 3-yr Initial 3-yr Initial 3-yr
White 0.85 Pending 0.89 Pending 108 Pending
1 Duro-Last’s CRRC Product ID: 0610.
LEED & LEED-EB Credits - White DF50 membrane
alone can obtain 1 credit in either U.S. Green
Building Council’s LEED or LEED-EB programs. In
combination with other design criteria the membrane
may help attain many other credits.
LEED Credit Category Duro-Last Attribute
Sustainable Sites Credit 7.2
Heat Island Effect: Roof
Solar Reflective Index
SRI = 108
LEED-EB Credit Category Duro-Last Attribute
Sustainable Sites Credit 7.2
Heat Island Effect: Roof
Solar Reflective Index
SRI = 108
Warranty:
Duro-Fleece warranties are available for projects
utilizing DF50 membrane. Contact Duro-Last for
warranty details. Consequential damage coverage
is not available for Duro-Fleece installations.
Available Warranties
10 Year Material Only
15 Year
NDL High Wind Hail High Wind + Hail
Material Only Residential
20 Year
NDL High Wind 15 + 5 Material
Material Only Residential