Technical Specifications

800 USG.4YOU
800 (874-4968)
usg.com
Manufactured by
United States Gypsum Company
550 West Adams Street
Chicago, IL 60661
CB399EG-USA-ENG/1-18
© 2018 USG Corporation and/or
its aliates. All rights reserved.
Printed in USA
PRODUCT INFORMATION
See usg.com for the most up-to-date product information.
DANGER
Causes skin irritation. Causes serious eye damage. May cause
an allergic skin reaction. May cause respiratory irritation.
May cause cancer by inhalation of respirable crystalline
silica. Do not handle until all safety precautions have been
read and understood. Avoid breathing dust. Use only in
a well-ventilated area, wear a NIOSH/MSHA-approved
respirator. Wear protective gloves/protective clothing/eye
protection. If swallowed, inhaled, or skin irritation occurs
get medical attention. If on skin: Wash with plenty of water.
If in eyes: Rinse cautiously with water for several minutes.
Remove contact lenses and continue rinsing. Contaminated
work clothing should not be allowed out of the workplace.
Wash contaminated clothing before reuse. Dispose of in
accordance with local, state, and federal regulations.
For more information call Product Safety: 800 507-8899
or see the SDS at usg.com
KEEP OUT OF REACH OF CHILDREN.
TRADEMARKS
The trademarks USG, DUROCK, EDGEGUARD, IT’S YOUR
WORLD. BUILD IT., the USG logo, the design elements
and colors, and related marks are trademarks of USG
Corporation or its aliates.
NOTE
The information in this document is subject to change
without notice. USG Corp. assumes no responsibility for
any errors that may inadvertently appear in this document.
Consult your USG Company sales oce or representative
for information. Products described here may not be
available in all geographic markets.
NOTICE
We shall not be liable for incidental and 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 the 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 date it
was or reasonably should have been discovered.
SAFETY FIRST!
Follow good safety/industrial hygiene practices during
installation. Wear appropriate personal protective
equipment. Read SDS and literature before specification
and installation.
Property Unit of Measure ASTM Test
Method
5/8 in. (15.9 mm)
USG Durock®
Brand Cement
Board with
EdgeGuard™
1/2 in. (12.7 mm)
USG Durock®
Brand Cement
Board with
EdgeGuard™
1/4 in. (6.4 mm)
USG Durock® Brand
Cement Board
with EdgeGuard™
Underlayment
Flexural strength
psi (MPa) C947 > 480 > 750 > 1000 (6.9)
Indentation strength
psi (MPa) D2394 > 1250 > 1250 > 1250 (8.6)
Shear bond strength
psi ANSI A118.4 > 50 > 50 > 50
Water absorption
% by wt. 24 hrs. C473 15 15 15
Nail-pull resistance
lb. (0.375 in.
[10 mm] head
diameter, wet or dry)
C473 > 90 > 90 —
Weight
psf (kg/m
2
) C473 3 2.4 < 1.9 (1.9)
Freeze/thaw
resistance
procedure B,
number of cycles
with no deterioration
C666 100 100 100
Mold resistance
— G21
D3273
Rating 0,
No growth
10/10
Rating 0,
No growth
10/10
Rating 0,
No growth
10/10
Noncombustibility
Pass/Fail E136 Pass Pass Pass
Surface-burning
characteristics
flame/smoke E84 0/0 0/0 0/0
Thermal
“R”/k value C518 .49/1.27 0.39/1.27 —
Standard method for
evaluating ceramic
floor tile installation
systems
Passes cycles 1-6 C627 Light commercial Light commercial Light commercial
Minimum bending
radius
ft. (requires special
framing details
available upon
request)
— 6 6 —
UNIFORM LOAD—1/2 IN. (12.7 MM) USG DUROCK® BRAND CEMENT BOARD WITH EDGEGUARD™
Stud Spacing Fastener Spacing Design Wind Load (I/240) Design Wind Load (I/360)
12 in. (305 mm) o.c. 8 in. (203 mm) o.c. 45 psf 45 psf
6 in. (152 mm) o.c. 60 psf 60 psf
16 in. (406 mm) o.c. 8 in. (203 mm) o.c. 33 psf 30 psf
6 in. (152 mm) o.c. 45 psf 30 psf
24 in. (610 mm)
o.c. (for shaft wall
assemblies only)
8 in. (203 mm) o.c. 13 psf 9 psf
6 in. (152 mm) o.c. 13 psf 9 psf
SUBMITTAL APPROVALS
Job Name
Contractor Date
TECHNICAL DATA