Download Sheetrock Properties and Applications

Sheetrock Properties
and Applications
Drywall
Also Known as:
-Sheetrock
-Wallboard
-Gypsum board
What is it?
- CaSO4.2H2O
(hydrous calcium sulphate)
Very few people have ever heard of its
real scientific name..
Where does it come from?
-Gypsum is a rock. Like limestone,
occurs naturally in many parts of
the world, and like limestone, in an
absolutely pure form, it is white.
How is it made?
- formed by sandwiching a core of wet
plaster between two sheets of heavy
paper. When the core sets and is dried,
the sandwich becomes a strong, rigid,
fire-resistant building material
Manufacturing Diagram
Steps for Drywall
• See Information Packet
DRYWALL TOOLS
SHEETROCK JACK
HOLDS THE
SHEETROCK
IN PLACE WHILE
APPLYING TO
CEILING
DRYWALL HAMMER
NAILS SHEETROCK
TO WALL OR
CEILING
DRYWALL LEVER
USED TO LIFT
SHEETROCK
FROM THE FLOOR
DRYWALL RASP
USED TO FILE
EDGES SMOOTH
AND CLEAN
EDGE OF THE
SHEETROCK
ROTOZIP
USED JUST AS
JAB SAW BUT A
POWER VERSION
JABSAW
USED TO CUT HOLES
INTO SHEETROCK
DRYWALL SCREW GUNS
COMPOUND MIXER
USED TO MIX AND
STIR DRYWALL
COMPOUNDS
COMPOUND PAN
USED TO HOLD
COMPOUND AS
IT IS APPLIED TO
DRYWALL
DRYWALL HAWK
USED TO HOLD
COMPOUND AS
IT IS APPLIED TO
DRYWALL
END OF PART
#1
WALL TEXTURE AND
APPLICATIONS
INTRODUCTION
• Drywall texture can take a wide variety
of forms and what appeals to different
people is often a matter of the materials
used, the techniques employed and
individual taste.
CHECK LIST BEFORE TEXTURING
Texture is the last thing applied to the drywall
after the completion of the installation and
topping processes.
1. The drywall is hung.
2. Drywall is taped, and seams are covered
with compound.
3. A minimum of three successive coats of
compound being put all seams and edges
smoothed over with the drywall the walls.
4. Sand all seams and edges until they
appear seamless.
Professional Texturing
Rigs
Will give the most uniform appearance.
These are large, gas-powered, trailermounted machines with an on-board
mixer and a hundred feet or more of air
and material hoses, terminating in a
trigger-operated texture gun with a
variety of interchangeable tips.
Professional Texturing
Rigs
Hopper Texture Gun
Smaller areas - typically no
more than a room or two-can
be textured effectively by the
using a hopper gun, which is
simply a large plastic hopper
mounted on top of a metal
spray gun. Liquid texture
material is poured into the
hopper, the gun is attached
to an air compressor, and the
texture is sprayed onto the
walls and ceiling.
Variations of Texture
Material
1. Orangepeel: Is the lightest texture. A
combination of thin material, high air
pressure, a small nozzle opening, and a
rapid spraying motion creates small
dots of texture on the wall.
Variations of Texture
Material
Orangepeel
Variations of Texture
Material
2. Knockdown: Combines thicker material, lower air
pressure, a larger nozzle and a slower
application to spray large globs of texture onto
the surface. As the texture begins to dry, a wide
metal trowel called a knockdown blade is pulled
lightly over the texture globs, knocking down the
high spots and creating large flat areas. By
varying the ratios of these four elements, along
with the pressure used during the knocking down
process, knockdown texture can be varied from
very light to very heavy.
Variations of Texture
Material
Knockdown
Texture
Variations of Texture
Material
Acoustical or
Popcorn Texture
Quick or Small Fix
Texturing
• Smaller areas or
patching can be
textured by using an
arousal type texture in
a can.