Transcript Unit 58 — Interior Wall and Ceiling Finish

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Unit 58
Interior Wall and Ceiling Finish
Gypsum Board Wallcovering • Wall
Paneling • Plastic Laminate Wall
Covering • Ceiling
Unit 58 — Interior Wall and Ceiling Finish
Gypsum board is
fastened directly to
wood or metal framing
members and provides
a smooth surface for
paint or wallcoverings.
Unit 58 — Interior Wall and Ceiling Finish
Gypsum boards have
different edge shapes
depending on their
purpose.
Unit 58 — Interior Wall and Ceiling Finish
Gypsum board is
cut by scoring it on
the face side and
then snapping off
the waste piece.
Unit 58 — Interior Wall and Ceiling Finish
Jagged gypsum
board edges can
be smoothed with
a serrated-blade
forming tool.
Unit 58 — Interior Wall and Ceiling Finish
In single-ply
application,
only one layer
of gypsum
board is used.
Unit 58 — Interior Wall and Ceiling Finish
In double-ply
application, an
adhesive is used
to bond the
second layer of
gypsum board to
the base layer.
The second
layer runs at a
right angle to the
base layer.
Unit 58 — Interior Wall and Ceiling Finish
A metal foot lift is
used to raise a
gypsum board wall
panel up tightly
against the ceiling.
The space below
the panel is covered
by base molding.
Unit 58 — Interior Wall and Ceiling Finish
Nails may be used to fasten gypsum board to wood
framing members. Small-headed nails are used with
predecorated panels.
Unit 58 — Interior Wall and Ceiling Finish
Nails must be driven properly to
ensure a solid connection
between the gypsum board and
wood framing member. Nails
driven too deeply, or at an angle,
will cut through the face covering.
Unit 58 — Interior Wall and Ceiling Finish
Loose nails are caused by a
poor fit of the gypsum board to
the framing surface or by nails
missing the framing members.
Unit 58 — Interior Wall and Ceiling Finish
The proper singlenailing pattern
ensures a sound
connection between
the gypsum board
and wood framing
member. Nailing
should begin at the
center of the panel
and move outward.
Unit 58 — Interior Wall and Ceiling Finish
When double-nailing
gypsum board, the
second set of nails may
be driven after the first
set is driven across the
entire panel, or the
second set of nails in
each row may be driven
after the first set in each
row is driven. Nailing
should begin at the
center of the panel and
move outward.
Unit 58 — Interior Wall and Ceiling Finish
Screws may be used to
fasten gypsum board to metal
or wood framing members. A
drywall screwdriver is used to
drive the screws.
Unit 58 — Interior Wall and Ceiling Finish
Stud adhesive is used
with screws or nails to
fasten single-ply gypsum
board to wood or metal
framing members.
Unit 58 — Interior Wall and Ceiling Finish
Gypsum board
must be properly
finished to ensure
a smooth and
even surface.
Unit 58 — Interior Wall and Ceiling Finish
Metal corner beads
reinforce outside corners
of gypsum board.
Unit 58 — Interior Wall and Ceiling Finish
Molding is used
to cover joints
and corners of
predecorated
gypsum board.
Unit 58 — Interior Wall and Ceiling Finish
Grooved softwood-veneer
plywood wall panels create
pleasant shadow lines.
Unit 58 — Interior Wall and Ceiling Finish
Wall paneling may have
rabbeted or beveled
edges, forming channel
or V-joints respectively.
Unit 58 — Interior Wall and Ceiling Finish
Plywood panels are
stacked with wood
strips between them
for preconditioning to
room temperature.
Unit 58 — Interior Wall and Ceiling Finish
Furring strips are
installed over
existing uneven
walls to provide a
smooth and even
wall surface for
plywood or
hardboard panels.
Unit 58 — Interior Wall and Ceiling Finish
Panels can be
positioned so that
a continuous joint
occurs on each
side of the door or
so joints break
over the openings.
Unit 58 — Interior Wall and Ceiling Finish
Holes for electrical
outlets and other
openings must be
laid out before the
panel is set in place.
The openings may be
cut before or after the
panel is positioned
using a cutout saw.
Unit 58 — Interior Wall and Ceiling Finish
The item requiring
an opening—in this
case an electrical
box—is used as a
pattern for marking
a panel opening.
Unit 58 — Interior Wall and Ceiling Finish
When installing
wall panels over
stud walls, the
edges of the
panels must fall
over the centers
of the studs.
Unit 58 — Interior Wall and Ceiling Finish
Base and ceiling moldings
eliminate the need to scribe
the top and bottom panel.
Unit 58 — Interior Wall and Ceiling Finish
Molding is often used to cover the inside and outside
corners of interior paneling.
Unit 58 — Interior Wall and Ceiling Finish
A panel must be carefully
scribed to the other wall
when no molding covers
the inside corner.
Unit 58 — Interior Wall and Ceiling Finish
Wall panels may be
mitered if molding is not
used on an outside corner.
Unit 58 — Interior Wall and Ceiling Finish
Flush application of panels on outside corners is
easier than mitering and panel edges are less
susceptible to damage.
Unit 58 — Interior Wall and Ceiling Finish
Nails are less
noticeable when
driven along the
bevel or into the
grooves of a panel.
Unit 58 — Interior Wall and Ceiling Finish
Adhesive is applied in
3″ long beads, 6″ apart,
at intermediate studs or
at furring strips behind
the panel.
Unit 58 — Interior Wall and Ceiling Finish
A wall panel is pressed into
place after the adhesive has
been applied.
Unit 58 — Interior Wall and Ceiling Finish
After the panel has been
pressed against the
adhesive, it is grasped at
the bottom along both
edges and slowly pulled
away from the stud. The
panel is then pressed back
into position after 2 min.
Unit 58 — Interior Wall and Ceiling Finish
Solid board paneling may
be applied horizontally.
Unit 58 — Interior Wall and Ceiling Finish
When installing boardon-board wall paneling,
drive an 8d nail at the
center of the
underboard. The top
boards should overlap
the underboard a
minimum of 1″. Fasten
the top board with two
10d nails. Make sure
the nails clear the
underboard to allow for
expansion and
contraction.
Unit 58 — Interior Wall and Ceiling Finish
When installing board-and-batten wall paneling, drive
an 8d nail at the center of the underboard. The
underboards are spaced approximately 1/2″ apart.
Drive a 10d nail through the center of the batten.
Unit 58 — Interior Wall and Ceiling Finish
When installing tongue-and-groove wall paneling, 4″
and 6″ widths can be blind-nailed with 6d finish nails
driven at a 45° angle. This method eliminates the
need to countersink and putty face nails.
Unit 58 — Interior Wall and Ceiling Finish
When installing channel-rustic solid board paneling
up to 6″ wide, one face nail is adequate to secure the
board. Widths over 8″ require a face nail at the center
of each board.
Unit 58 — Interior Wall and Ceiling Finish
Blocking must be
placed in a stud wall
to provide a nailing
base for vertical
board paneling.
Unit 58 — Interior Wall and Ceiling Finish
Prior to installation,
solid board paneling
is arranged along the
wall so wood grain
and other features
can be matched to
each other.
Unit 58 — Interior Wall and Ceiling Finish
When tapping a board
panel into place, use a
piece of material with a
grooved edge against
the board to avoid
damaging the edge.
Unit 58 — Interior Wall and Ceiling Finish
Plastic laminate wall panels
are available with an
imitation wood grain finish.
Unit 58 — Interior Wall and Ceiling Finish
Suspended tile ceiling
systems are frequently
used in commercial
construction.
Unit 58 — Interior Wall and Ceiling Finish
Ceiling tile with
tongue-and-groove
edges are stapled
through the wide
flanges into the
furring strips.
Unit 58 — Interior Wall and Ceiling Finish
For a ceiling
with even-foot
dimensions,
the center tiles
are positioned
at each side of
the centerlines.
Unit 58 — Interior Wall and Ceiling Finish
For a ceiling with oddfoot dimensions, the
center tiles are
positioned so the
centerlines align with
the middle of the tiles.
Unit 58 — Interior Wall and Ceiling Finish
Border tiles on opposite
sides of the ceiling should
be the same width, and
should be at least 6″ wide.
Unit 58 — Interior Wall and Ceiling Finish
Suspended ceilings are often installed in commercial
buildings.
Unit 58 — Interior Wall and Ceiling Finish
Recessed lighting
can be used with
suspended ceilings.
Plumbing, lighting,
and ventilation
fixtures must be
properly secured to
structural members
above a suspended
ceiling.
Unit 58 — Interior Wall and Ceiling Finish
A laser level is commonly
used to establish the
suspended ceiling height
at several locations along
the wall.
Unit 58 — Interior Wall and Ceiling Finish
A suspended
ceiling framework
consists of main
runners and cross
tees, which are
supported by
hanger wires.
Ceiling tile panels
are supported by
the runners and
cross tees.