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Duro-Last DT80 Membrane User Manual

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

Created: 01/09/2014

2 of 2

www.duro-last.com 800-248-0280

DURO-TUFF

®

80 MIL MEMBRANE

Codes and Standards:

Underwriters Laboratories

Storage:

Store rolls lengthwise on pallets. Use tarps to keep rolls dry.

Membrane Attachment:

Mechanically Fastened – DT80 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 DT80 membrane. Refer

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

Adhered – DT80 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:

DT80 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.

Physical Property

Test Method

ASTM 4434 Requirement for Type III Sheet

Typical Value

Overall Thickness

ASTM D751

 0.045 in.

80 mil, nominal

Breaking Strength

1

ASTM D751 Grab Method

 200 lbf./in.

481 x 341 lbf./in.

1

Elongation

1

ASTM D751 Grab Method

 15%

33% x 33%

1

Seam Strength

ASTM D 751 Grab Method

 255 lbf.

(75% of Breaking Strength)

Pending

2

Tear Strength

1

ASTM D751 Procedure B

 45 lbf.

53 x 196 lbf.

1

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.

Pending

2

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.

Pending

2

Dimensional Stability

1

ASTM D1204

Conditioned for 6 hours in oven

maintained at 176

 F.

Allowable change: ≤ 0.5%

-0.10% x -0.10%

1

Water Absorption

ASTM D570

Immersed in water at 158

 F

for 168 hours.

Allowable weight change: ≤ 3%

0.10%

Static Puncture

ASTM D5602

 33 lbf.

PASS

Dynamic Puncture

ASTM 5635

 14.7 ft-lbf. (20 J)

PASS

1

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

2

Values will be added upon completion of testing.