Drywall Repair

Step by step instructions
to repair drywall.


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Drywall Hole
Repair Instructions

1/ Before applying tape or
drywall compound, cut
away all high spots.

Use a utility knife, or
sheetrock knife with
a sharp blade to cut
away the high spots,
and loose material.

Use a hammer to lightly
drive in nails that have
popped out.

A low spot can be easily
filled, a high spot
needs a lot of sanding.

2/All loose material is
removed around the
repair area, or loose
material will end up
in the drywall compound,
and causes streaks,
as the trowel is drawn
over the surface of the
repair area.

3/Grooved the edges to
about 1/4 of an inch deep,
at 45 degrees.
This provides space for
the drywall compound
to enter and bond firmly,
preventing cracks at the

4/ Apply light coats of
drywall compound, and
allow to dry.

Knock off high spots,
before applying the next
coat of compound.

Load the trowel with
drywall compound from
the bottom front edge,
of a gyprock hawk.

As the trowel is placed
over the drywall compound
on the hawk, press down
gently and draw towards
yourself, and pick up
drywall compound on the
under side of the trowel.

The trowel is cleaned off
each time before

Working with Drywall
Repair Compound

Buy premixed drywall
compound and gently
mix before use.

Place sticky fiberglass tape
over the repair area and
onto the wall, followed
with a quick thin coat of
drywall compound.

This bonds the fiberglass
tape firmly to the wall.

The repair area is left for
a day to dry thoroughly,
before applying more

A three inch wide gyprock
trowel is comfortable to
work with, to apply the
first coat of drywall

Enough coats are applied,
to allow for sanding, and
not expose the fiberglass
mesh tape.

Two or three light coats
are applied, one coat at
a time, allowing enough
time for each layer to
dry before the next layer.

The drywall compound is
applied four to six inches
pass the end of the patch

This spreads out the
height of the patch over a
greater distance which
makes it less noticeable
when finished.

The trowel is first run
over each layer when it
has dried, this knock off
any burrs and high spots.

then additional coats are

Place portable lighting
beside the wall to show
any imperfections in
the wall.

Sanding Drywall

A common disposable
dust mask is used when

Dried drywall compound
is sanded with medium grit
sandpaper, very little
pressure is applied.

A light circular motion is
used to finish up.

120-grit sandpaper is used
first to remove the material
faster, and finished with
150-grit sandpaper.

Sanding helps texture the
dried drywall compound
to match the texture of
the existing gyprock wall.

An alternative to sanding
small areas, is to use a
damp sponge, or cloth, which
provides a dust free method
of removing material.

Even through the drywall
compound has dried, it
can be rejuvenated with
a damp or wet cloth.

After sanding, prime the
area is primed with drywall
undercoat primer paint.

Drywall primer helps the
patch area not to look
smoother than the rest
of the wall.

The wall is ready for

Patching a Small
Hole in Drywall

To Patch small holes like
nail and screw holes, and
lumps along the edge of
the hole.

cut away all loss material
around the hole, and tap
in slightly any nail hole.

A hole can be filled, but
lumps on drywall are much
harder to deal with.

Apply a small amount of
drywall compound over
the hole, and scrape
away the excess.

This is done one or two
times, as there is a little
shrinkage when compound
dries each time.

On the final coat, it is left
to dry for a day, then lightly
sanded smooth and ready
for painting.

If you have a very tiny nail
hole, a very quick solution
is to apply a little drywall
compound with your finger
directly into the hole, it
will do the job.

Patching a Medium
Size Hole
in Drywall

To patch a medium size hole,
any lumps or bumps are cut
away with a sharp knife.

The hole in the wall is covered
over with sticky fiberglass
tape in a criss cross fashion.

The fiberglass is extending a
couple of inches past the hole.

The first thin coat of drywall
compound is applied over
the tape and let dry.

When dry the trowel is run
across the patch to knock
off any bumps.

Another coat is applied,
then let to dry.
This process is continued,
until the hole is covered
over to make a flat surface.

The area is lightly sanded
before painting.

Preparing Surfaces
for Drywall

Standard size drywall
sheets are 1/2 inch thick,
it contours to the surface
beneath it.

If the wall studs are not
level, the studs show in
the finished

It is very important to
carefully prepare walls
before applying the drywall

A string and straight edge
are used to check walls for
bows. Any Bows are cut
away, and material is
added where the stud is
concaved in, to straighten


In preparation to drywall
a wall, do a measurement
of the wall stud placements
and record this on a sheet
of paper for future reference
in locating the studs.

Mark each studs position
on the floor and ceiling
where possible.

This shows where to
place the nails or screws
into the drywall.

Cutting Out
an Electrical Box
Placement in Drywall

Coat the outer lip of the
electrical box with soft
chalk or lipstick.

The drywall sheet is slid
into place at the correct
height and pressed
against the electric box
and lightly tapped on the
back of the sheet, over
the electrical box area.
This leaves an accurate
impression of the electrical
box onto the drywall.

A cut is made outside
the line to create a bit
of clearance for easy

Installing Drywall

The largest areas of the
wallis generally covered
If a mistake is made in
the measurement, the
drywall sheet can be
used to cover a smaller

Using This procedure
reduces waste.

Cleanup Tip

When cleaning up your
tools, don't wash a lot
of drywall compound
down the drain,
drywall compound can
clog up your drainpipes.

First wipe down the
gyprock tools with wet
paper towel, then finish
up under the tap.

Dry the tools to prevent
rust from forming.

Clean up any spilled
gyprock compound while
wet. Scoop up what you
can and finish cleaning
up with a damp rag.

Cutting Drywall

A utility knife is used to
cut a drywall sheet.

A sharp blade is required,
dull blades tear the paper
and make a mess.

A measurement is taken,
and draw a pencil line
where the cut will be

Lay the drywall sheet
face up on a flat surface
and then using a two
foot carpenter square
or a straight edge and
draw the utility knife
along the edge.

The cut is made about
half way through the

Lift the drywall sheet up
onto its side, and tap the
backside with the handle
of the utility knife, the
full length of the cut,
this helps insure a
good clean cut.

Bend the section of the
gyprock into a right

While holding the portion
to be cut off, the utility
knife is pulled from the
bottom to the top of the
sheet, cutting, along the

Intricate cuts are made
with a key hole saw, or

Drywall Dust


Drywall dust creates a real
mess that can be tracked
all over the place.
The dust is so fine it
floats all over the room.

The best way to deal with
dust, is to trap as much
as possible as you are

Place a drop sheet on the
floor below the area you
are sanding, then gently

Carefully wrap up the drop
sheet, take it outside, and
give it a good shake.

Sweep and wipe up little
bits left around the room
with a damp rag.
Finish up with a vacuuming.

A regular vacuum will
tolerate a bit of gyprock
A large amount of drywall
dust will plug it up and
destroy your household

Empty the vacuum cup
when you finish, if it is a
disposable bag type, then
replace with a new one.

The dust plugs up the bag
and prevents air from
cooling the motor, which
will cause the vacuum
motor to overheat.

A wet dry vacuum is best
to use to clean up drywall

There are available
attachments for a regular
hosehold vacuum cleaner
which passes the dust
through water before it
enters the vacuum cleaner.

Popped Nails, Screws
in Gyprock

Popped nails/screws occur
anytime there is a space
between the stud in the
wall and the drywall.

If studs not dried properly,
when they are installed,
this will cause nails or
screws to pop as the
studs dry and shrink.

To repair this problem,
drive popped nail orscrew
below the level of the

Place a nail or screw
above and below the
popped nail and tighten

A finish up is done with
drywall compound,
sanded and painted.

Water Damaged

Extreme water damaged
gyprock cannot be repaired
because the outside paper
covering looses it bond with
the interior material
which has crumbled away.

Any strength of the drywall
is gone, the only solution is
to remove the water
damaged drywall and
replace with new drywall

Types of Drywall

Standard, Flexible,
fire-resistant, moisture
resistant, abuse
resistant, foil-backed,
decorative, blue board,
high density, cellulose
fiber sound proofing and
mold resistant.

Drywall Strength

Drywall has a grain that
runs parallel to the length,
giving panels more strength
along the length, rather
than across the width.

For load bearing walls the
gyprock should be applied

General Drywall

Gypsum a mineral, in the
drywall, contains 21 percent
water in a crystallized form.
A large percentage of
gypsum is water.
This ability to hold water
makes it a very good fire
resistant material.

When gypsum is subject to
extreme heat, water in the
gypsum converts into steam,
retarding any flames.

Drywall is also great at
deadening sound and the
board is easy to repair.

Drywall sheets can be
painted, textured and

An 8 ft. sheet of drywall
weighs about 54 pounds.

The sheets are shipped
together in two's, but
can be easily separated
by removing the strip
of paper which holds them

Drywall sheets come in
lengths of 8, 9, 10,
12, 14 and 16 ft.

They come in 1/4, 3/8,
1/2, and 5/8 inch

Drywall was developed in
the late 1930's by
United States Gypsum

Before drywall, plaster was
the popular choice.

Gyprock Hawk
Use Instructions

Work with a gyprock hawk,
it reduces the effort.

The hawk holds the gyprock
repair compound, it provides
a place to access and deposit
compound, and it provides a
place to clean off your trowel,
and a place to deposit grit
laden compound. It saves
you many steps, back and
forth to reload.

Nailing Framing

When using powder-actuated
mailer, to nail framing strips
onto a cinder block, aim for
the center of the block.

Cinderblocks have a web
in the center and ends,
the rest is hollow.

If you are using masonry
nails, drill pilot holes and
drive the nails into the
mortar brick joints.

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