How to Do Sheet Rock Taping and Sanding

Apply a 1/6 to 1/8 inch layer of joint compound to the gapped areas between the sheet rock sheets. Too much is better than not enough.

Cut the drywall tape, leaving an extra 2 inch section on each end. Lay the drywall tape over the area that was just filled with joint compound. Begin at the top, holding the 5 or 6 inch taping knife at a 45 degree angle. Smooth the tape with the knife, allowing the joint compound to squeeze out of the sides of the tape. Return the excess joint compound to the bucket. Let it dry overnight.

Apply the second coat of joint compound working from the inside out, laying the knife flat to apply and then angling it to remove the excess. Do not rush, patience ensures a smooth seam. Use enough joint compound to cover the tape and extend the compound out an extra inch on the sides. Let it dry overnight once again.

Apply the third coat of joint compound, using the 10 inch taping knife. Apply in the same manner as day two; applying a thinner layer this time. Use just enough joint compound to fill the lines from the previous day. Remove any excess joint compound, and let it dry.

Sand the area making sure the sanding block is flush against the wall. Sand until the wall is flat. Wipe the area with a clean dry cloth or soft brush to remove any dust. The area is now ready to prime and paint.