USG SHEETROCK Gypsum Panels - Manual (Page 9)

Preparing the Panels
1 Marking
Place panel with light-colored
face paper side up. Measure
and mark panel size desired.
2 Cutting
Line up straightedge with the
marks and hold firmly against
the panel. Draw pencil line as
guide for scoring. Score through
paper and lightly into the core.
To break the panel core,
securely grasp the board edges
on both sides of the score line
and snap board with a quick,
firm movement.
Use utility knife with sharp blade
for scoring. Complete cutting by
running knife through back
paper for the length of the panel
and snapping back to face.
After cutting the panel, smooth
the cut edge with sandpaper
wrapped around a block of
wood such as a piece of 2x4
lumber. Be sure to keep edge as
square as possible. Always wear
a dust mask when sanding.
Tip
Gypsum panels are heavy and
may bend or snap under their
own weight. Be sure panels
are properly supported prior to
scoring.
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