Rushing through drywall finishing will result in problems in the future.
Hanging drywall is a simple process, but finishing the joints between pieces can be a difficult task. A number of problems can arise that ruin the smooth look of the wall during the finishing process. Using the right tools and techniques will help you avoid these issues as you finish drywall in your home.
Protruding Screws
A small round protrusion can ruin the smooth finish of your freshly installed drywall, and this problem is caused by protruding screw or nail heads. Fasteners must be completely level with the drywall surface. If drywall is hung while wet or hung on wall studs that are damp, screws and nails can pop up even a year later. When the drywall or wood dries, the fasteners shift and may ruin a smooth drywall finish.
Tape Blistering and Peeling
Drywall tape is used to cover the joints where two sheets fit together. Drywall mud, also known as joint compound, must be applied under the tape to make a smooth transition. If too little mud is layered below the tape, it will bubble or peel as it dries. Drywall tape requires at least 1/16th of an inch of drywall mud to properly fasten it to the wall. Once blistering or peeling occurs, the tape must be removed and the whole joint must be re-done.
Joint Ridges
Butt joints occur where two pieces of drywall meet in the middle of a wall. There is little space for drywall mud between the two pieces and getting a smooth edge on these joints is difficult. The edge of cut drywall is slightly rough from the cutting knife, creating a ridge of burrs that pushes up drywall mud to create joint ridges. Using a sharp knife to smooth the edges of cut pieces will help prevent joint ridges.
Smudges and Uneven Mud
One of the most common drywall finishing problems are small, accidental smudges and marks left in the soft drywall mud. This may happen when part of your hand gently touches the mud as you try to smooth it. Applying multiple layers of joint compound and going over the joint with a mud knife many times removes any accidental thumbprints and makes a smooth, even transition to the drywall surface.
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