Sanding walls before painting is a crucial step with any painting method but it becomes even more important if you re using a paint sprayer unless you are painting a popcorn ceiling you will want the surface underneath to be as flat and clean as possible.
Sanding down concrete walls.
Before you actually start the process of sanding your concrete you should get the right.
Attach a diamond sanding pad to a hand held grinder.
Make sure the patched area is dry before attempting the grinding process.
If aiming for a specific type of finish measure and mark the necessary depth on the surface s edge 1 16 1 8 or 1 4.
Mix portland cement with clean water to the consistency of regular paint.
The above quote is the best advice in my opinion.
Line the blade up flat to the correct height concrete first then move your sled along so you can make cross cuts through the high section.
Knock those out with a hammer then you can smooth out the area by moving the sled and blade sideways.
Press the grinder.
Sand any particularly bad areas of concrete with rough grit sandpaper.
Cleaning and leveling along the way.
How to sand down patching cement from foundation walls step 1.
How to sand concrete walls step 1.
Roll liquid concrete bonding agent over the surface of the wall in fairly straight lines using a short napped.
Trowel a 3 8 inch.
Do not try to make the wall level.
Wash the walls with dishwashing soap and water.
Fill any holes or dents with a good patching slurry.
If dealing with a large space it is crucial to work in sections particularly when sanding by.
Besides sanding the surface any holes or cracks should be covered too.
The grinder will only work on fully.
As in any diy project the key to an excellent final product lies in proper preparation and having.
There are different damages that might have occurred on your concrete and before you try.
Spritz the old concrete with a little water to make it damp before applying the cement paint.
Remove the soap residue by rinsing the walls with a sponge and.
It s important to immediately.
Instructions thoroughly wipe down the surface to ensure there are no debris that could leave pits.
2 get the necessary equipment.
To prevent the inhalation.
How to smooth a concrete wall finish step 1.
3 prepare the.
Using the coarsest grade.
The angle grinder is loud and it will produce a lot of dust.