Drywall Repair Houston

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MightyDoes- Drywall Repair Houston

• 9113 Harbor Hills Dr
• Houston, TX 77054
• [phone]
• http//mightydoes.com/

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Lather

• Lathers assemble and install the framework for
  gypsum materials in buildings. These materials
  include drywall and plaster.

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Plaster and plastering

• There are quite a few plasters but two main types
  - gypsum based and cement based.
• 1. Cement based are used mainly for outdoors.
• 2. Gypsum based plasters are used indoors only -
  dampness will attack a gypsum based plaster and
  cause it to crumble.
• Cement based plasters can be used indoors for
  areas that are likely to become damp and areas
  that require a greater thickness of cover.
• Gypsum based plaster is used in conjunction with
  drywall to cover the interior walls of our homes.
  This plaster can be found as a powder which must
  be mixed with water, or premixed and ready for
  use.

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What is Drywall? Drywall sometimes called
wallboard, plasterboard, or the brand name
Sheetrock is comprised of a core of wet gypsum
rock that is sandwiched between two sheets of
heavy paper. When the gypsum core sets and dries,
the finished product is rigid and sturdy enough
for use as a building material. Drywall is called
such because it is a dry alternative to the
previously used lath and plaster method of wall
construction, where plaster was spread over wood
formers while still wet. Drywall is faster, less
labour intensive, and cheaper to install than
plaster.
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Drywall sizesStandard drywall comes in
sheets that are four feet wide, with lengths of
eight, ten, or twelve feet. Commercial builders
often use sheets up to sixteen feet in length.
These large sheets make for quicker
installations, because they reduce the number of
joints (seams) between the sheets that need to be
filled and finished.
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Panel thickness5/8 inch panel-considered
fire resistant. Even though drywall generally
does not burn, 5/8 inch drywall is used as a
firewall. For example, a house that has an
adjoining apartment, 5/8 inch drywall must be
used on the wall that the two residences share
(common wall), and acts as a fire wall. It
prevents the fire from spreading from one
residence to the other.1/2 inch panel- most
commonly used. General purpose for walls and
ceilings.
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Panel sizes contd1/4 - 3/8 inch panel- used
sometimes to overlay existing, older walls in
order to make it smoother.Is also used to make
curved walls.Drywall is naturally fire
resistant, because of the gypsum in the core.
When installing in moisture-prone areas such as
the walls surrounding bathtubs and showers, it is
recommended to use water-resistant drywall, also
called "greenboard," or concrete backerboard for
further water-resistance.
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Types of DrywallDent resistant - found in 1/2
inch or 5/8 inch. Much more durable than
regular drywall. Used in high traffic areas,
childrens playrooms, garage, etc.Sag
resistant- found in 1/2 inch panels. Will not
sag like some other 1/2 inch panels. Good to
use on ceilings.
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Sound control board- used to reduce sound and
also offers higher thermal insulation. Found
in 1/2, 5/8, 3/4 inch panels.Cementious
backerboard- cement product reinforced with
fiberglass mesh. Used on walls that may be
exposed to water, such as showers.
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FastenersScrews1. Type W bugle head screws
- has a course thread and provides excellent
holding power in wood.2. Type S bugle head
screws- has a tip that drills its own hole in
metal studs in walls.3. Backerboard screws-
made from stainless steel or steel that is
non-corrosive
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Fasteners contdnails- both smooth and
ringshank nails are used. The smooth nails do
not hold the drywall as secure as the ringshank
nails. The rings on the shank of the nail gets a
better grip in the wood, thus decreasing the
number of nail pops (when the nail starts to
come back out of the drywall).
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Once the drywall has been secured to the wall
studs, the seams or joins are to be covered with
plaster before the paint is applied. Before the
plaster can be applied to the joins, it must be
covered with tape or beads. Tape and beads come
in a variety of types1. Flexible paper
tapeUsually has a seam running along its
length so that it can be folded to be used in
corners. Tends to be more time consuming because
it has to be embedded in a coat of plaster.
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2. Fiberglass mesh tapeUsually self sticking.
Its not necessary to apply a coat of plaster
underneath it.3. Composite and metal
tapesSince these tapes are rigid, it makes it
much easier to get a straight crisp inside
corner. 4. Bullnose and metal cornersThese
enable you to create a straight and neat outside
corner. The metal corner is a 90 degree angle,
whereas the bullnose corner is rounded.Plaster
must be applied to the edges of both inside and
outside corners so that it appears seamless once
painted.
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Tapes
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Common Drywall Tools1. Utility knife used for
cutting drywall.2. Drywall Saw used for
making cut-outs in the drywall (circular,
rectangular, etc.)3. Metal snips use for
cutting metal corner beads.
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4. Screwgun used for inserting screws into the
drywall and studs. It is different from other
power drills because it limits the depth that
the screw goes into the drywall. 5. Trowels
and taping knives used to spread the plaster
over the drywall joins.
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6. Sanders used to smooth the plaster before
paint is applied.
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7. Water filter system consists of a vinyl
hose connected to a vacuum cleaner on one end
and a bucket on the other end with water in
it. Another hose leaves the bucket and
attaches to a sander. The idea is for the
dust from the sander to be vacuumed into t he
bucket depositing the plaster dust into the
water and not affecting the vacuum.
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Installing drywall on ceilings and walls
Drywall is always fastened to the ceiling before
the walls. This ensures that the drywall that
goes on the wall is underneath the ceiling
drywall and helps to support the drywall thats
on the ceiling. Drywall is fastened to the
studs of the walls. Studs are spaced either 16
inches or 24 inches on center. The studs provide
the strength for the wall.
16 inch centers
24 inch centers
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Ceiling
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Walls
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join.
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join. 2. Place a
piece of tape over the plaster, along the full
length of the join.
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join. 2. Place a
piece of tape over the plaster, along the full
length of the join. 3. Drag the plaster knife
along the tape to allow the excess plaster to
squeeze out. Be careful not to tear the tape.
Allow to dry.
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join. 2. Place a
piece of tape over the plaster, along the full
length of the join. 3. Drag the plaster knife
along the tape to allow the excess plaster to
squeeze out. Be careful not to tear the tape.
Allow to dry. 4. Apply a wider coat of plaster
over the tape with a plaster knife. Allow to dry.
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join. 2. Place a
piece of tape over the plaster, along the full
length of the join. 3. Drag the plaster knife
along the tape to allow the excess plaster to
squeeze out. Be careful not to tear the tape.
Allow to dry. 4. Apply a wider coat of plaster
over the tape with a plaster knife. Allow to
dry. 5. Apply a third coat of plaster over the
dry coat with a larger plastering knife,
feathering the edges (thinning the edges).
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Plastering Seams and Joins
The following is the sequence of events that is
usually followed when plastering a join between
two pieces of drywall 1. If tape is being used,
run a coat of plaster on the join. 2. Place a
piece of tape over the plaster, along the full
length of the join. 3. Drag the plaster knife
along the tape to allow the excess plaster to
squeeze out. Be careful not to tear the tape.
Allow to dry. 4. Apply a wider coat of plaster
over the tape with a plaster knife. Allow to
dry. 5. Apply a third coat of plaster over the
dry coat with a larger plastering knife,
feathering the edges (thinning the edges). 6.
Sand with fine sandpaper to smooth irregularities
in preparation for primer and paint.
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Plastering
First coat over tape
Second coat
Third coat
Profile of layers