Flex Securock Gypsum-Fiber Roof Board User Manual

Page 2

Fire Performance

–

UL Classified as to Surface Burning Characteristics and Non-Combustability in accordance with ASTM E84 (CAN/ULC-S102)

– Flame Spread 5 and Smoke Developed 0

– 1/4", 3/8", 1/2" and 5/8" Thickness — Class A in accordance with UL790 (CAN/ULC-S107). See the UL

Building Materials Directory for more information.

– 5/8" Thickness — Meets requirements of Type X per ASTM C1278 and may be used in P series designs as a

thermal barrier.

System Performance

–

FM Approved

– Complies with requirements of FM 4450 and FM 4470

– Meets FM Class 1

Standards Compliance

ecurock

Gypsum-Fiber roof board is manufactured to conform to ASTM C1278, “Standard Specification for

Fiber-Reinforced Gypsum Panel.”

Physical Properties

ecurock

Gypsum-Fiber Roof Board

1/4" (6.6 mm)

3/8" (9.5 mm)

1/2" (12.7 mm)

5/8" (15.9 mm)

Width, standard

4' (1220 mm)

Length, standard

4' (1220 mm) and 4' (1220 mm) and 4' (1220 mm) and 4' (1220 mm) and

8' (2440 mm)

Pieces per unit for 4' x 8' sheets

Weight, nominal lbs./unit, 4' x 8' sheet

2,575

2,725

2,525

Weight, nominal lbs./sq. ft.

1.57

1.96

2.76

3.20

Flexural strength, parallel, lbs. min.,

110

161

per ASTM C 473

Compressive strength, psi nominal

1800

Flute spannability per ASTM E 661

2-5/8"

10"

Permeance, perms, per ASTM E 96

R Value per ASTM C 518

0.2

0.3

0.5

0.6

Coefficient of thermal expansion,

8.0 x 10

-6

8.0 x 10

-6

8.0 x 10

-6

8.0 x 10

-6

inches/inch



°F, per ASTM E 831

Linear variation with change in moisture,

8.0 x 10

-6

8.0 x 10

-6

8.0 x 10

-6

8.0 x 10

-6

inches/inch



%RH, per ASTM D 1037

Water absorption, % max, per ASTM C 473 10

Surface water absorption, nominal grams, 1.6

1.6

per ASTM C 473

Mold resistance per ASTM D 3273*

Bending Radius

25'

30'

*ASTMD3273 Mold Resistance Testing - In independent lab tests conducted on Securock Gypsum-Fiber roof board and Securock Glass-Mat roof board at the time of manufacture per ASTM D3273 Standard Test Method for Resistance
to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber, both panels scored a 10. The ASTM lab test may not accurately represent the mold performance of building materials in actual use. Given unsuitable
project conditions during storage, installation or after completion, any building material can be overwhelmed by mold. To manage the growth of mold, the best and most cost-effective strategy is to protect building products from water
exposure during storage and installation and after completion of the building. This can be accomplished by using good design and construction practices.

Submittal

Job Name

Approvals:

Contractor

Date

geographic markets. Consult

your U.S. Gypsum Company

sales office or representative

for information.

Notice

We shall not be liable for

incidental or consequential

damages, directly or indirectly

sustained, nor for any loss

caused by application of these

goods not in accordance with

current printed instructions or

for other than their intended

use. Our liability is expressly

limited to replacement of

defective goods. Any claim

shall be deemed waived unless

made in writing to us within

thirty (30) days from the date it

was or reasonably should have

been discovered.

Safety First!

Follow good safety and

industrial hygiene practices

during handling and installation

of all products and systems.

Take necessary precautions

and wear the appropriate

personal protective equipment

as needed. Read material

safety data sheets and related

literature on products before

specification and/or installation.

Product Information

See usg.com for the most

up-to-date product information.

Trademarks

The following trademarks used

herein are owned by United

States Gypsum Company or

a related company: S

ecurock

USG, USG in stylized letters.

Note

Products described here

may not be available in all

– Locate edge joints on, and parallel to, deck ribs. Stagger end joints of adjacent lengths of S

ecurock

Gypsum-Fiber

roof board. Butt board edges and ends loosely in typical installations. Long, uninterrupted runs (greater than 200

feet) of S

ecurock

Gypsum-Fiber roof board will require slight gapping due to thermal expansion.

– See product data table below for maximum flute span when panels are applied directly over metal decking.

– For vertical parapet applications, only 1/2" or 5/8" panels should be used. Maximum framing spacing is 24" o.c.

Manufactured by

United States Gypsum Company

550 West Adams Street

Chicago, IL 60661

(800) USG.4YOU (874.4968)

usg.com