How to make rough walls smooth again.
How to smooth concrete walls before painting.
If necessary apply a second coat feathering it as well then wait for it to dry and sand it smooth.
Wait for the primer to dry then sand the exposed drywall edges to remove paper nubs.
Do not try to make the wall level.
1 wash down the concrete wall with a pressure washer to get rid of dirt debris and oil stains.
Tape butcher paper over any trim in the.
1 clean loose dirt and dust either sweeping with a broom if it s a floor or.
Before you apply your finish repair any damage to the wall and remove any items that may get in the way.
You ll probably need to wait about 48 hours after applying primer before you can paint but don t wait more than 30 days to paint.
Cover the gouge with a thin layer of joint compound feathering it out along the wall.
Patch gouged or otherwise damaged areas with concrete filler.
If your project is indoors scrub the wall with soapy water and a scrub brush instead of using a power washer.
How to smooth a concrete wall finish.
When you set out to paint concrete the process.
Using a solution of trisodium phosphate tsp and warm water clean the.
Wipe the rough walls with the sponge to remove any dust.
Use a concrete primer which will help you get a smooth even surface that the paint can stick to.
Let the walls dry completely.
For exterior projects use a power washer to rid the wall of all dirt and dust.
All it takes is time and some very careful preparation.
Remove glaring lumps and bumps.
Prime your wall before you paint and after you seal your concrete you need to prime your wall.
Dampen a sponge with warm water.
Clean the concrete surface with tsp.
Sand any particularly bad areas of concrete with rough grit sandpaper.
It s a good idea to test the concrete for moisture before you prime and paint especially if the concrete is fresh.
Cover the floor with drop cloths.