Metal drywall tape makes ceiling corners straight.
Metal drywall tape is similar to paper drywall tape, but it has two lengths of flat metal along either side of the center fold. Typically, drywall workers use metal drywall tape to cover outside angles, but it is possible to use the tape for inside angles. Metal drywall tape is more expensive than regular drywall tape, so it is a good idea to use it only for extremely crooked angles. If you accidentally warp the metal tape while installing it, cut a new piece and try again.
Instructions
1. Scrape off any debris or loose material within 6 inches of the corner on both sides. Use a 6-inch drywall knife or other flat tool. If the drywall is broken in any place, gouge out the damaged material and leave the surface as flat as possible.
2. Measure the inside angle and cut a length of metal drywall tape to match. Use tin snips or construction scissors.
3. Use a 6-inch drywall knife to spread a thick layer of joint compound over the inside angle. Don't leave any bare spots, or the tape will lift and bubble later.
4. Push the cut piece of metal drywall tape into the angle. The metal strips should face into the corner. Adjust the tape as necessary to keep it straight and even.
5. Press out and smooth the joint compound with the drywall knife. Remove as much compound as you can, but don't press so hard you tear the tape.
6. Allow the joint compound to dry. The length of the drying period depends on the brand, but a typical drying time is 24 hours.
7. Use the drywall knife to spread a smooth, even layer of joint compound over the installed metal drywall tape. If you have difficulty making it smooth, perform a series of coats instead, allowing each to dry fully before beginning the next.
8. Use 150-grit sandpaper to smooth down any remaining edges until the inside angle is blemish-free.
Tags: drywall tape, , joint compound, drywall tape, inside angle