Duro-Last DT80 User Manual

DURO-TUFF® 80 MIL MEMBRANE

Advantages:

Duro-Last excellent choice for low-slope roof projects requiring a long lasting, energy efficient roofing membrane. The complete line of Duro-Last custom prefabricated accessories is compatible with the Duro-Tuff membrane.

Description:

Duro-Tuff 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.

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.

Total Thickness – 80 mils, nominal.

Weight – 0.51 lb. per sq. ft.

Color – Top surface: white. Bottom surface: light

gray.

Packaging – DT80 is supplied in the roll sizes shown below. A full pallet contains ten rolls.

Roll Dimensions:

6-inch overlap and use of Duro-Last Poly or Cleat Plates.

4-inch overlap and use of Duro-Last Oval Plates.

Stripping – Stripping material can be field cut and/or DT50 membrane, available in 10-inch wide rolls, may be utilized.

Overlap Line – A green line, 6 inches from one edge of the sheet, is factory applied to the top of the sheet to assist in maintaining proper overlap between sheets.

Duro-Tuff® 80 mil (DT80) membrane is an

 PVC film above scrim – 41 mils

Dimensions

120 in. x 65 ft. 617 sq. ft. 628 sq. ft. 335 lb.

60 in. x 65 ft. 292 sq. ft. 303 sq. ft. 170 lb. 30 in. x 65 ft. 130 sq. ft. 140 sq. ft. 85 lb.

Estimated Coverage

6 in. Overlap

4 in. Overlap

Roll Weight

Seam Plate and Fastener Placement Guides – “X”s are placed at 6-inch intervals along one edge of the sheet to assist in maintaining proper spacing between fasteners. Install fasteners so that the outside edge of the seam plate is flush with the edge of the sheet.

Energy Efficiency:

White DT80 membrane is an excellent product for complying with California Title 24 and other energy efficiency programs requiring the use of a highly reflective roof membrane.

Cool Roof Rating Council (CRRC)

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

White 0.85 P2 0.89 P2 108 P2

Duro-Last’s CRRC Product ID: 0610.

3-year aged results pending.

Solar

Reflectance

Thermal

Emittance

Warranty:

The following warranties are available for projects utilizing DT80 membrane. Contact Duro-Last for warranty details. Consequential damage coverage is not available for Duro-Tuff installations.

Solar Reflective

Index (SRI)

“T-Lap” Patches – A patch is required at all lap areas where 3 or more layers of membrane intersect (“T-Lap”). The minimum size of the patch is 4 x 4 inches or 4-inch diameter. Patches can be made of either DT or DL membrane of any thickness. Refer to detail drawing DT1066.

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

1 of 2 www.duro-last.com 800-248-0280

Created: 01/09/2014

Available Warranties

10 Year Material Only

15 Year

20 Year

NDL High Wind Hail High Wind + Hail

Material Only Residential

NDL High Wind 15 + 5 Material

Material Only Residential

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

Breaking Strength1 ASTM D751 Grab Method

Elongation1 ASTM D751 Grab Method

Seam Strength ASTM D 751 Grab Method

Tear Strength1 ASTM D751 Procedure B

Low Temp. Bend ASTM D2136

Heat Aging ASTM D3045

Accelerated Weathering

Dimensional Stability1 ASTM D1204

Water Absorption ASTM D570

Static Puncture ASTM D5602

Dynamic Puncture ASTM 5635

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

Values will be added upon completion of testing.

ASTM G154

(formerly G53)

Conditioned for 56 days in oven

Irradiance level of 0.68 W/m2-nm.

4 hour condensation at 122 F.

Conditioned for 6 hours in oven

Allowable weight change: ≤ 3%

 0.045 in.

 200 lbf./in.

 15%

 255 lbf.

(75% of Breaking Strength)

 45 lbf.

Must Pass at – 40 F.

maintained at 176 F.

5,000 hour total test time.

Cycle: 8 hour at 145 F,

maintained at 176 F.

Allowable change: ≤ 0.5%

Immersed in water at 158 F

for 168 hours.

 33 lbf.

 14.7 ft-lbf. (20 J)

80 mil, nominal

481 x 341 lbf./in.1

33% x 33%1

Pending2

53 x 196 lbf.1

PASS

0.10%

PASS

Pending

-0.10% x -0.10%1

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

2 of 2 www.duro-last.com 800-248-0280

Created: 01/09/2014