Taping and Mudding Drywall
Taping and Mudding Drywall
By Mark J. Donovan
Taping and mudding drywall to some
extent is an art that takes some practice. However, most DIY homeowners can
tackle a small taping and mudding drywall project if they first get the right
tools and get a little upfront training.
In order to perform a quality taping
and mudding drywall job you first have to make sure that the drywall is hung
If you are installing drywall in a
room, first install the drywall on the ceilings. Then install the drywall on the
walls starting at the top with the first row, and then working your way to the
floor with a second row of drywall, assuming your walls are 7.5 to 8 feet in
height. The drywall seams should be minimized to help ensure a quality finished
Note that it is important that the
tapered ends of the drywall butt up against each other so that they create a
slight depression line half way up the wall. This depression area enables the
tape and mud to be liberally applied over the joint without creating too high of
Taping and Mudding
If you are using drywall paper tape,
apply a small skim coat of mud over the joints before applying the tape.
If you are using the sticky
fiberglass tape, you can apply it directly to the drywall seams and joints.
Once the tape has been applied to a
seam or joint. Apply a thin coat of mud over the tape and seam/joint.
Use a 6 broad knife to apply the mud
and run it down the tapeline with long continuous strokes. Do not run the knife
perpendicular with many strokes.
This will create many vertical lines
that will need to be sanded. Once you have applied the first coat of mud let it
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After the first coat has dried, use a
10 wide broad knife and apply a liberal amount of mud along the length of the
seam for the second coat. Again use the knife with long strokes that run
parallel to the seam versus perpendicular to it.
When applying the second coat, try to
angle the blade ever so slightly such that there is more mud left near the
center of the seam/joint and less at the edges. Basically you want to build up
the seam/joint area with a little extra mud to fully cover the tape.
Note that this second coat should
spread out the seam such that it is approximately 10 inches in width.
Again let this second coat dry.
Before applying the third coat of
drywall mud use your 6 knife and knock off any high spots or burrs on the
Now apply a skim coat of drywall mud
over the seam, again fanning the seam out slightly wider than the previous
application of drywall mud. The purpose of this coat is to feather out the seam
and fill in any miniscule cracks or lines in the existing drywall mud seam.
Again let this third coat dry.
Applying Mud to Inside and Outside
There are a couple of tools that are
specifically designed for taping and mudding corners. You may want to purchase
Inside and Outside Corner trowels.
Applying Mud to Nail/ Screw Holes
As with the seams, apply 3 coats of
mud to the nail / screw holes. No tape is required for the nail / screw holes.
With each pass, feather out the
drywall patch so that after the 3rd coat the screw hole is covered
with approximately a 6 wide circle of mud.
Sanding Mud Seams and Joints
The best way to sand the seams and
joints is to use a drywall pole sander. A pole sander is about 4 feet long and
has a flexible 3.25x9 head on it that you apply drywall mesh sheets to. You
can also use a drywall hand sander as well.
When sanding the seams and joints
make long strokes with the pole or hand sander in a direction that is parallel
to the seam/joint. Apply less pressure to the middle of the seam and more toward
It is important that you sand the
edges of the seam so that they completely feather out to a smooth finish with
the un-mudded drywall. As you near the edges of the seam, you can turn the angle
of your pole sander such that it is on a 30-45o angle.
Preparing walls for Primer and Paint
Once you have sanded all of the seams
and joints, wipe the walls down with a slightly damp rag to remove the drywall
Next apply a coat of primer.
Then apply a couple of coats of
paint, and your walls are ready for trim.
How to Repair a Large Drywall Hole Ebook
- If you have a large hole in your drywall and need to repair it,
either call in a drywall contractor and pay an arm and a leg, or you can fix
it yourself. The "How
to Repair a Large Drywall Hole Ebook" will show you how to
repair your damaged wall so that it looks as good as new.
For more help on new home construction, see
Home Construction Contractor Bid Sheets.
Construction Contractor Bid Sheets
help ensure that you find and hire the right home building contractor
for your next home improvement, remodeling, or building project. In addition,
they will help to ensure that your home improvement project is completed on time and on budget.
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