How to Tape and Mud Drywall

Many walls and ceilings in modern construction are made from sheets of drywall, also known as gypsum wallboard. Drywall is a plaster-like substance sealed between two sheets of heavy duty paper and attaches to the walls or ceiling using special drywall screws or nails. The long edges of each sheet of drywall are tapered, allowing you to finish the seam between the boards, making your walls nice and smooth. In this article, we’ll look at the basic techniques needed for mudding a room that has been drywalled. The process is done in several stages and does require some specific tools.

Prepping the Drywall

Check that the drywall is attached to the wall studs correctly. Drywall should be fastened to all wall studs it covers, every six to eight inches along the length of each stud. Ideally, it should be supported at each edge every 8 to 12 inches  in the middle of the panel in a wall framed 24 inches  on center, giving you top to bottom 5 screws; in a more usual wall with studs on 16 inch centers, you will have a row of screws on each edge plus two rows spaced 16 inches in from each edge.

Minimize “butt” joints. The long edges of the drywall are tapered; the short edges (and any edges you cut) are not tapered and will form “butt” joints that are more difficult to finish. Therefore, drywall boards should meet at tapered edges as much as possible and be no more than 1⁄8 to 1⁄4 inch (0.3 to 0.6 cm) apart.

Schedule an inspection, if necessary. If your local municipality requires an inspection before mudding your drywall, schedule the inspection. It’s better to be put through the inconvenience of scheduling a walk-through than having to tear the whole thing down after you’ve taped and mudded your joints.

Find more in this article.

VIDEO:How to Mud an Interior Wall

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