Duro-Last DL50 User Manual

DURO-LAST® 50 MIL MEMBRANE

Advantages:

Duro-Last choice for projects requiring a long lasting, energy efficient roofing membrane. The membrane is available in prefabricated sections or as roll goods. The complete line of Duro-Last custom prefabricated accessories is compatible with the DL50 membrane.

Description:

50 mil (DL50) membrane is an excellent

DL50 membrane is composed of PVC film laminated to both sides of a reinforcement fabric (scrim).

PVC Film - Proprietary thermoplastic PVC formulation of resins, plasticizers, stabilizers, biocides, flame retardants, and U.V. absorbents. The same PVC film is used on both sides of the scrim.

• PVC film above scrim – 28 mils

• PVC film below scrim – 11 mils

Scrim – An 18 x 14 polyester fabric construction composed of 840 x 1000 denier threads provides superior tear and puncture resistance. The polyester thread is treated to prevent wicking.

Total Thickness – 50 mil, nominal.

Weight – 0.29 lb. per sq. ft.

Colors – White, tan, gray, dark gray and terra cotta.

Available Configurations:

Prefabricated Sections – DL50 is available in prefabricated sections up to 2,000 sq. ft. with a maximum 80 ft. in either dimension.

Roll Good – Typical Dimensions

Width

64 inches 100 ft. 533 sq. ft. 155 lb. 483 sq. ft. 48 inches 100 ft. 400 sq. ft. 116 lb. 350 sq. ft. 32 inches 100 ft. 267 sq. ft. 77 lb. 217 sq. ft. 16 inches 100 ft. 133 sq. ft. 39 lb. 83 sq. ft.

Assuming 6 inch overlap.

Length

(max.)

Roll Area Approx.

Weight

Approx.

Coverage

Energy Efficiency:

Cool Roof Rating Council (CRC)

Initial 3-yr Initial 3-yr Initial 3-yr

White 0.88 0.68 0.87 0.84 111 82

Tan 0.39 P

Gray 0.47 P2 0.89 P2 54 P2

Dark Gray 0.26 P2 0.88 P2 26 P2

Duro-Last’s CRRC Product ID: 0610.

3-year aged results pending.

Solar

Reflectance

0.89 P2 43 P2

Thermal

Emittance

Solar Reflective

Index (SRI)

LEED & LEED-EB Credits - White DL50 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 other credits.

LEED Credit Category Duro-Last Attribute

Sustainable Sites Credit 7.2

Heat Island Effect: Roof

LEED-EB Credit Category Duro-Last Attribute

Sustainable Sites Credit 6.2

Heat Island Effect: Roof

Solar Reflective Index (SRI)

SRI = 111

ENERGY STAR Qualified Thermal Emittance = 0.87

Warranty:

The following warranties are available for projects utilizing DL50 membrane. Contact Duro-Last for warranty details.

Available Warranties

10 Year Material Only

15 Year

NDL High Wind Hail High Wind + Hail

Material Only Residential

White DL50 membrane is an excellent product for complying with California Title 24, LEED

and other

20 Year

energy efficiency programs requiring the use of a highly reflective roof membrane. It is an ENERGY

STAR

qualified product.

Duro-Last, “World’s Best Roof”, Duro-Guard and Duro-Bond are registered marks owned by Duro-Last, Inc.

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NDL High Wind 15 + 5 15 + 5 Material

Pro-Rated Material Only Residential

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DURO-LAST 50 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 – DL50 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 DL50 membrane. Refer

to the Duro-Last Duro-Bond System Specification for system requirements.

Adhered – DL50 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:

DL50 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

Breaking Strength1

Elongation1

Seam Strength

Tear Strength1

Low Temp. Bend

Heat Aging

Accelerated Aging

Dimensional Stability1

Water Absorption

Static Puncture

Dynamic Puncture

Typical values are shown for both machine and cross machine directions. The machine direction results are listed first.

ASTM D751

ASTM D751 Grab Method

ASTM D 751 Grab Method

ASTM D751 Procedure B

ASTM D2136

ASTM D3045

ASTM G154

(formerly G53)

ASTM D1204

ASTM D570

ASTM D5602

ASTM 5635

≥ 0.045 in.

≥ 200 lbf./in.

≥ 15%

≥ 292 lbf x 328 lbf

(75% of Breaking Strength)

≥ 45 lbf.

Must Pass at – 40 °F

Conditioned for 56 days in oven

maintained at 176 °F

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

Conditioned for 6 hours in oven

maintained at 176 °F.

Allowable change: ≤ 0.5%

Immersed in water at 158 °F

for 168 hours.

Allowable Weight Change: ≤ 3%

≥ 33 lbf

≥ 14.7 ft-lbf (20 J)

PASS 50 mil, nominal

PASS

PASS 417 lbf

PASS

PASS PASS

PASS

PASS 1.7%

PASS 56 lbf

PASS

390 lbf x 438 lbf1

31% x 31%1

132 lbf x 163 lbf1

-0.30% x -0.45%

≥ 14.7 ft-lbf

Additional Tests

Fungi Resistance

Moisture Vapor Transmission

Duro-Last, “World’s Best Roof”, Duro-Guard and Duro-Bond are registered marks owned by Duro-Last, Inc.

ASTM G-21 No Sustained growth or discoloration

ASTM E96, Proc. B, Method A < 0.22 U.S. Perms

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