Flex Securock Gypsum-Fiber Roof Board - 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 S ecurock Gypsum-Fiber roof board is manufactured to conform to ASTM C1278, “Standard Specification for
Fiber-Reinforced Gypsum Panel.”
Physical Properties S 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) 4' (1220 mm) 4' (1220 mm) 4' (1220 mm)
Length, standard 4' (1220 mm) and 4' (1220 mm) and 4' (1220 mm) and 4' (1220 mm) and
8' (2440 mm) 8' (2440 mm) 8' (2440 mm) 8' (2440 mm)
Pieces per unit for 4' x 8' sheets 50 40 30 24
Weight, nominal lbs./unit, 4' x 8' sheet 2,575 2,575 2,725 2,525
Weight, nominal lbs./sq. ft. 1.57 1.96 2.76 3.20
Flexural strength, parallel, lbs. min., 40 70 110 161
per ASTM C 473
Compressive strength, psi nominal 1800 1800 1800 1800
Flute spannability per ASTM E 661 2-5/8" 5" 8" 10"
Permeance, perms, per ASTM E 96 30 26 26 24
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 10 10 10
Surface water absorption, nominal grams, 1.6 1.6 1.6 1.6
per ASTM C 473
Mold resistance per ASTM D 3273* 10 10 10 10
Bending Radius 25' 25' 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
RF5/rev. 10-11
© 2011, United States Gypsum Company
Printed in U.S.A.