Duro-last Concrete Screws User Manual download pdf

Duro-Last: The Proven Performer®

"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.

www.duro-last.com

800-248-0280

DATA SHEET

2009

DURO-LAST® CONCRETE SCREW

CONCRETE SCREW DIMENSIONS

Length

Quantity per

Bucket

1.25 in. (31 mm)

1000

1.75 in. (44 mm)

1000

2.25 in. (57 mm)

1000

2.75 in. (69 mm)

1000

3.25 in. (82 mm)

1000

3.75 in. (95 mm)

1000

4.25 in. (107 mm)

1000

5 in. (127 mm)

1000

5.5 in. (139 mm)

1000

6 in. (152 mm)

1000

6.5 in. (165 mm)

500

7 in. (178 mm)

500

7.5 in. (190 mm)

500

8 in. (203 mm)

500

9 in. (229 mm)

500

10 in. (254 mm)

500

11 in. (279 mm)

500

12 in. (305 mm)

500

Description:

Duro-Last®, Inc. specifies the use of concrete screws

for the mechanical fastening of the Duro-Last roofing

system on structural concrete decks. Duro-Last

Concrete Screws are equipped with #3 square drive

truss heads and are Duro-Coated for protection

against the harsh roofing environment.

Duro-Last Concrete screws surpass the FM 4470

specification and may be used to fasten both

insulation and the Duro-Last membrane to the deck.

Installation:

1. Duro-Last Concrete screws are designed to be

installed into a pilot hole made by a 3/16-inch

(5 mm) masonry drill bit.

2. The depth of the pilot hole should be a minimum of

1.5 inch (38 mm).

3. Penetration into the concrete deck is 1 inch (25.4

mm), minimum, from the top surface of the deck.

4. A Duro-Last Plate is required for each fastener

used for membrane attachment.

Note:

• Duro-Last, Inc. stocks concrete screws in the sizes

noted in the table to the right. Additional sizes are

available on a drop ship basis. Please allow

adequate time for ordering and delivery of special

orders.

® CONCRETE SCREW 1

Summary of Contents

Page 1 - ® CONCRETE SCREW

Duro-Last: The Proven Performer®"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.www.dur

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Duro-last Concrete Screws User Manual

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