USG Manufactured Housing Handbook User Manual

Page 16

Knockdown Pattern
Application—Spray.
Equipment—Pole gun, hopper, or
Binks 18D gun with plunger.
Knockdown Procedure—Apply as
spatter, but use material at heavy
latex-paint consistency. After spat-
tering surface, wait about 10 to 15
minutes, then very lightly flatten
only tops of spatters with flat blade
or flat hand trowel. Again, size of
spatters depends upon pressures
used.

Skip-Trowel Pattern
Application—Hand.
Equipment—Wide hand trowel.
Procedure—Use slightly thicker
texture consistency than for
knockdown. For ease of skip
troweling, add grade 30 sand into
the mix. Dip trowel into mud pan
filled with texture. Lightly run the
trowel across wallboard, allowing
the texture to “skip” across the
surface. The silica sand works as
a screed guide. Rerun the trowel
across the surface to even.

Alternatively, spray-apply a

spatter coat, using material
thinned to spray-application con-
sistency and mixed with sand as
above. Reduce the atomizing
pressure; do not cover as heavily
as for spatter/knockdown pat-
tern. Wait approximately 10 to 15
minutes, then use a blade as in
the knockdown procedure, but
applying more pressure.

Crowsfoot Pattern
Application—Spray or roll or
hand stomp.
Equipment—Single-round or
double-round texturing brush.
Procedure—Mix texture to a con-
sistency thicker than that of latex
paint but thinner than that of joint
compound. Spray- or roll-apply a

uniform coating across the sub-
strate or use the texture brush to
“stomp” a base coat of texture
over the surface. Allow material to
partially dry to a dull, wet, finish;
then “stomp” the surface with the
texture brush to create the
desired crowsfoot or stippled fin-
ish. For best results, prewet the
texture brush with texture.

Roller Patterns
Application—Roller.
Equipment—Long nap roller or
special roller covers.
Procedure—Mix texture to a con-
sistency thicker than that of latex
paint but thinner than that of joint
compound. Spray- or roll-apply
desired texture to surface. While
the texture is wet, use a specialty
roller to impart the desired pattern
to the surface (a variety of spe-
cialty rollers for creating different
texture patterns is commercially
available). Flattening raised por-
tions of the wet material provides
further variation.

Swirl Pattern
Application—Spray or roller.
Equipment—4 to 8 inch wallpa-
per brush.
Procedure—Mix texture to a con-
sistency similar to that of moder-
ately thick latex paint. Apply a
uniform coating of texture to the
surface. Use wallpaper brush to
generate a series of circular
“swirls” in a row across the sur-
face. Apply the next row of swirls
so that it partially overlaps the
preceding set of swirls.

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pumped. Both aggregates have a
tendency to absorb extra mix
water when under pressure. If
stiffening occurs, extra water—
but not in excess of recom-
mended amounts—should be
added to the mix until the desired
consistency is obtained at the
hose discharge. There is no stiff-
ening under pressure with sand
aggregate.

24 Patterning

General
Certain texture products can be
hand textured following initial appli-
cation with spray equipment, brush,
roller, or trowel. For high productiv-
ity, spray-apply the texture material;
then, while it is still wet, use the
appropriate hand tools to create the
desired pattern.

A string-wrapped roller produces
an attractive striated-stone
effect, while cross-rolling gives
an additional interesting squared
pattern. For finer designs and
textures use a small brush, roller-
stipple, whisk broom, crumpled
paper, comb, sponge, or similar
item. Flattening raised portions of
wet material provides further
variations. Texture products may
also be scored to represent block,
tile, or cut stone outlines.

The guidelines that follow will
help you to create some of the
most popular texture patterns.

Fog and Spatter Pattern
Application—Spray.
Equipment—Binks 18D gun or
equivalent, equipped with a #53
fluid nozzle and R-21 fan cap.
Procedure—Mix products to a
thin, latex-paint consistency. For a
good fog coat, which is always the
first application, atomizing air
should be approximately 60 psi
and material feed pressure
approximately half the atomizing
pressure. When spraying, apply in
long even strokes with no wrist
action, holding gun perpendicular
to and approximately 36 in. from
surface. Apply material as uni-
formly as possible, avoiding lap
marks. After fog coat has been
applied, allow about 10 to 15 min-
utes for surface to partially dry,
then apply spattering by removing
the R-21 fan cap and reducing
atomizing air to approximately 15
psi and material feed to approxi-
mately 10 psi. While applying
spatter coat, move spray gun in a
rapid random fashion, standing
about 6 ft. from surface. The size
of the spatters depends upon per-
sonal preference.

Orange Peel Pattern
Application—Spray.
Equipment—Same as for fog coat.
Procedure—Same as for fog coat,
except that atomizing air pressure
should be 40 psi and material feed
pressure approximately 20 psi.
When applying, follow same pro-
cedure as for fog coat, but use
slightly more material to give a
good orange peel pattern. The
degree of orange peel pattern
depends upon the amount of
material applied to the surface.

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