DIY Plasterboard Repair
Johnson Brothers Mitre 10 New Store
73 Bassett Street
Mona Vale - Online Store: Jbhmv.Com.Au
DIY Plasterboard Repair
- Place self-adhesive mesh patch over the hole.
- Use a plaster knife to cover the patch with lightweight joint compound in a crisscross pattern, feathering the edges so it blends with the wall.
- Let the patch dry and apply a second coat of compound if needed.
- Sand smooth, ready for a paint finish. Tip: wrap your sandpaper around a flat piece of wood to ensure you have a flat to wall surface. This will prevent gouging a dip in the newly applied plaster.
- Cut a piece of plasterboard panel slightly larger than the hole. Hold the cut plasterboard panel against the wall and trace around, then remove and mark diagonal lines from the corners towards the hole.
- Taking care not to puncture plumbing or electrical wiring, use a plasterboard saw or trimming knife to cut all the way through the diagonal lines. Then firmly run the trimming knife along the straight outline, and push the piece of plasterboard into the opening – this will ‘snap’ the piece off. Use a trimming knife to cut through the backing paper then discard the piece. Continue with each part.
- Cut your second piece of plasterboard into two backing blocks. Backing blocks should be at least 40mm wide, and the height of the hole plus 40mm to allow room for adhesion.
- Using a small amount of Rapid Patch, stick the two blocks of plasterboard to the inside of the wall. Ensure that the cut edges and all adhesive surfaces are clean.
- Leave to dry for at least 1 hour.
- Apply Rapid Patch to the front face of the backing blocks and gently push the new plasterboard panel into place, ensuring the face is level with the existing wall.
- Leave to dry for at least 1 hour.
- Apply Easy Tape to cover the joins between plasterboard panel and wall (sand any painted surfaces first).
- Apply 2 coats of Rapid Patch, leaving 20 minutes drying time and sanding between coats.
- If you cannot make the edge sharp again, cut out the piece of Gyprock that has become damaged. Position each cut about two inches away from the corner and make both of them long enough to encompass any hairline cracks visible above or below the point of impact. With the repair area outlined, use the hammer and cold chisel to chip off the old joint compound and expose the metal corner bead beneath. Cut out the damaged section with a utility knife or hacksaw to cut through the corner angle; remove a section at least 15 centimetres long around the damage. If the angle is screwed in place, remove the screws and pull it out with pliers. If it's nailed, gently pry it off without crushing surrounding surfaces. If you can't pry out the nails without further damaging the wall, use the snips to cut the bead from around the nailheads. Then pull off the damaged section and tap the nails below the surface with the hammer.
- Measure and cut a New Metal Angle Section
- Fill the gaps in the internal plaster corner. Mix some plaster base coat in a bucket until it has the consistency of toothpaste. Then use your scraper to fill the corner gap between the plaster walls. Make sure you scrape off any excess. Once the base coat is dry, use the scraper blade to take off any small ridges on the base coat.
- Reinforce the internal plaster corner with paper tape. Cut a piece of paper tape to the height of your wall. There will be a crease running down the centre of the tape. Use this to fold the tape in half. Now apply a thin coat of plaster base coat to both sides of the internal corner and press the tape over the top. Once the tape is in place, use your scraper to flatten it onto the wall, squeezing out any excess base coat. Then leave the plaster to dry.
- Apply a top coat to the internal plaster corner Use a paint scraper to apply a top coat of plaster on both corner faces. Run an internal corner plaster tool over the top coat to give it a smooth finish. Leave the top coat to dry. Sand smooth ready for a paint finish.
Products advice is available from the trained friendly staff at Narrabeen, Mona Vale and Avalon Johnson Brothers Mitre 10.
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