National Gypsum Construction Guide

TECHNICAL DATA
FASTENER SELECTOR FOR WOOD FRAMING
Nail Type Length Wallboard Type Thickness
GWB-54 [Annular Ring 1/4" 1 1/4" (31.8 mm) Regular or Foil-back 3/8" (9.4 mm),
(6.4 mm) head, 098 Dia. shank] 1 3/8" (34.9 mm) gypsum board. 1/2" (12.7 mm)
Gypsum Wallboard Nail (Coated Nail length should Regular, Foil-back or Fire-Shield 1/4" (6.4), 3/8" (9.4 mm)
cooler, flat head, diamond point) be sufficient (type X) gypsum board. 1/2" (12.7 mm),
for 7/8" (22.2 mm) penetration
5/8" (15.9 mm),
into the framing member. 1" (25.4 mm)
Where a certain degree of fire resistance is required for gypsum board assemblies and construction, nails of same
or larger length, shank diameter, and head bearing area as those described in the fire test report must be used.
Screws Type W 1 1/4" (31.8 mm) Regular or Foil-back. 3/8" (9.4 mm), 1/2" (12.7 mm),
5/8" (15.9 mm)
Staples US Std. 16 gauge 1" long (25.4 mm) Only in first 3/8" (9.4 mm)
7/16" (11.1) crown with 1 1/8" (28.6 mm) layer of multi- 1/2" (12.7 mm)
divergent points 1 1/4" (31.8 mm) layer application. 5/8" (15.9 mm)
DETAILS
Maximum Framing Spacing
For Single-Layer Gypsum Wallboard
CEILING DETAIL
PLATE
JOIST
OUTSIDE CORNER
CORNERBEAD
PLATE
Gypsum Board Gypsum Board Maximum
Thickness Orientation Framing Spacing
to Framing
Ceilings:
3/8" (9.5 mm) A Perpendicular B 16" (406 mm) o.c.
1/2" (12.7 mm) Parallel B 16" (406 mm) o.c.
1/2" (12.7 mm) Perpendicular B 24" (610 mm) o.c.
5/8" (15.9 mm) Parallel 16" (406 mm) o.c.
5/8" (15.9 mm) Perpendicular 24" (610 mm) o.c.
Walls:
STUD
PLATE
INSIDE CORNER
3/8" (9.5 mm) Perpendicular 16" (406 mm) o.c.
or Parallel
1/2" (12.7 mm) Perpendicular 24" (610 mm) o.c.
or Parallel
5/8" (15.9 mm) Perpendicular 24" (610 mm) o.c.
or Parallel
SPECIFICATIONS
See CSI 3-Part format Generic/Proprietary Specifications on page
118.
A
B
Shall not support thermal insulation
On ceilings to receive hand or spray-applied water-based
texture material either 1/2" (12.7 mm) gypsum ceiling
board (ASTM C 1396/C 1396M or C 1395/C 1395M)
shall be applied perpendicular to framing; other
gypsum wallboard products shall be applied perpendicular
to framing and board thickness shall be increased
from 3/8" (9.5 mm) to 1/2" (12.7 mm) for 16" (406 mm)
o.c. framing and from 1/2" (12.7 mm) to 5/8" (15.9 mm)
for 24" (610 mm) o.c. framing.
100 NATIONAL GYPSUM WALLBOARD PRODUCTS