Attaching the panels – USG Manufactured Housing Handbook User Manual

Page 6

3 Cutouts

For openings such as doors, win-
dows, electrical outlets, and
switch boxes, measure across
from the point where the side
edge of the panel will rest to the
near and far sides of the required
opening. Then measure from the
point where the top or the bottom
edge of the panel will fall to the
top or bottom of the opening.

Mark the outline of the opening at
the appropriate position on the
gypsum panel. A template made
from thin plywood is useful for
repetitive cutouts.

Cut with a heavy-duty router
using either a bushing or bearing
to follow a template or a plunge
bit with an integral guide to follow
the framing in large openings.

4 Framing

Prior to panel attachment, inspect
framing to ensure that the face of
the framing is straight. Warped or
crooked framing should be
replaced.

5 Mechanical Attachment

Nail Attachment
Pneumatic nailing equipment may
be used for attaching gypsum
panels if the gun is equipped with
a depth-limiting stop. Do not rely
on air-pressure adjustments to
control nail depth.

Hold panel tight against framing.
Nail in a pattern that works the
gypsum panel flat against the
framing. Begin with restrained
edges and ends and work out-
ward toward open areas. Space
nails maximum of 7

Љ apart on

ceilings, 8

Љ on walls, and at least

3/8

Љ from ends and edges of pan-

els.

Seat nail so head is in a shallow
dimple (1/32

Љ) in the face of the

drywall.

Attaching the Panels

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For 1/4

Љ, 3/8Љ, and 1/2Љ thick

panels, use 1-1/4

Љ annular ring

drywall nails. For 5/8

Љ panels, use

1-3/8

Љ annular ring drywall nails.

Drive nails in straight, not at an
angle. Do not overdrive or coun-
tersink nails. This results in
breaking the face paper or frac-
turing the gypsum core. If a nail
happens to go in crooked, hold
the panel tight against the fram-
ing and drive a second nail in
about 2

Љ from the nail that punc-

tured the paper. Then drive the
first nail in below the surface of
the board.

Screw Attachment
Space screws maximum of 12

apart on ceilings, 16

Љ on walls,

and at least 3/8

Љ from ends and

edges of panels. Sink screws to
just below the panel surface,
leaving the paper intact.

Use an electric or pneumatic
screwgun equipped with an
adjustable screw depth control
head and Phillips bit. Drive
screws in straight, leaving the
screwhead slightly (1/32

Љ) below

the face of the gypsum board. Be
careful not to overdrive screws.
Breaking the face paper greatly
lessens the holding power of the
screw.

On 3/8

Љ and 1/2Љ thick panels,

use 1-1/4

Љ screws; on 5/8Љ thick

panels, use 1-5/8

Љ Type W Bugle

Head Screws for superior holding
power and high resistance to
popping due to wood shrinkage.

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