We have given you a few weeks ago, and tips for preparing a room before painting. I want this time to dwell on a stage that requires special attention and special techniques: repairing holes and cracks in a wall. If this work is not done properly, it can compromise the result of painting, thus reducing all the efforts you have done to give a beautiful look to your room. There are all kinds of repairs and depending on the size of the holes in your wall, the technique differs.

The holes left by nails or plastic plugs (1 cm)

These are the most common repairs and also more numerous than you need to do.

# Start by sanding the hole to remove the blisters made by the removal of the nail or ankle. Use to do this, a sandpaper from 80 to 100 grains or a metal putty knife to overcome blistering a little thicker.
# Then pull a wet cloth over the hole to remove dust.
# Use a joint cement already prepared. I use cement “dust control” which, when pumice is less dust, as its name says. Spread the concrete using a trowel to seal 6 inches and a tray to receive the cement.
# Then apply the glue on your hole. Avoid thick layers that make lumps. Prefer rather more layers to achieve your purpose (more than 3 layers 2) and replace the cement in excess in your seal. You will know your cement is dry when there are more rings and it went from dark gray to light gray / white.
# Then, clean your tools with a damp cloth and water.
# When cement is dry, remove excess cement (lumps that may have accumulated) with a trowel 6 inch and repeat the process with the second layer. As I do not like the dust that is done by sanding, I scrape the excess cement at each layer.

wall-hole

You are now ready to take the other steps mentioned in my article Everything you need to know about painting.

Repair holes caused by doorknobs

You open your door and suddenly you do not stop the ground. Result: a nice hole in the wall. If you have an irritable at home, it may have once left behind a punch.

# For holes of this size, I advise you, as the small holes, to remove excess plaster that would have balked after the coup.
# Then use the fiberglass tape, a checkered sticker that you’ll stick to either side of your hole for him to create a surface on which you will then work.
# You will notice that the relief is slightly down in the hole. This will require use of quick-setting cement to cover the tape, because you may need several layers. A normal cement require 1-2 day (s) to be dried. A quick-setting cement can dry in 90, 45 or 20 minutes, depending on the product you choose. To prepare the cement, you will need a 4 liter boiler to properly dilute the powder with water. Give it a creamy but not runny.
# After application, remove excess cement with a trowel so that the leveling easier. To allow it to dry quickly, you can put a fan in your room that will isolate by placing a towel in the opening under the bottom of the door.
# When you apply your second and third layer, you can resume the joint compound already prepared “dust control” as you did to repair smaller holes.

Plaster wall

It may well be that your wall is plaster, then a wall thicker than ½ inch. To achieve your goals, you do in the previous step, but knowing that your piece of patching will be recessed into the wall since the wall is thicker.

# Take the quick-setting cement and cement fill the shortfall so that the “patch” is equal to the wall.
# When your concrete is very dry, apply self-adhesive tape fiberglass and continue with another layer of cement. Then proceed as for the other steps by sanding when it’s dry.

For ceiling cracks

# With a metal trowel, remove excess blister on each side of the crack.
# Put the tape on fiberglass cracks and apply cement to seal it already prepared in as many layers as you need it.

If your repair seems, is that you have not extended enough cement. When applying, you should not see bumps after finishing your work.