How to Repair
Cold chisel, hammer, utility knife, soft bristle
paintbrush, 10” wallboard knife and 150 grit sandpaper.
Latex bonding agent, mortar cement, joint compound and
1. Make sure that there are no leaks in the area of the
dam aged plaster. If there are any, fix them and allow to
dry for a couple of weeks or after next rainstorm.
2. Prepare the room for work by protecting the floor with
a plastic cover, take all the paintings off the wall and
remove furnishings. Remember to tape around the doors to
minimize the dust throughout our home.
3. Gently chip away at the damaged plaster using a cold
chisel and a hammer.
4. Using a utility knife, cut along the chipped inside of
the edge until the edge becomes smooth and straight.
5. Using a wide, soft bristle paintbrush, apply latex
bonding agent onto the edges of the hole and onto the
6. Apply 1 cm (in thickness) of mortar mix using a 10”
wallboard knife. Remember that the first layer needs to be
cross-scratched when it begins to set; this will help the
second layer to stick better.
7. Allow 24 hours to dry.
8. Spray the first coat with water and using the same
knife, apply ½ cm (in thickness) of mortar cement of the
second coat and remember to cross scratch.
9. Leave to dry overnight, 12 hours minimum.
10. Using the 10” knife, apply the joint compound. Swipe
the compound towards the edges evening it with the rest of
the wall. Allow to dry for 24 hours.
11. Wet sand the area using 150 grit sandpaper until the
area becomes completely even.
12. Using the soft bristle brush to apply a coat of
interior primer and allow drying for 4-5 hours.
Complete the project with the final coat of paint.