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.
How to smooth concrete walls before painting.
Masonry paint also called elastomeric paint or elastomeric wall coating is a good choice for concrete painting because it contains binders that contract and expand with the concrete.
Smooth the concrete with the trowel again making straight lines in the opposite direction if possible.
Exterior house paint can crack and peel on concrete.
Skim coating the process of covering rough walls with a thin layer of joint compound will smooth out the wall surface.
Clean the concrete thoroughly with trisodium phosphate tsp and warm water then let dry.
Before you paint and after you seal your concrete you need to prime your wall.
Masonry paint 20 per gallon can be tinted and is much thicker than exterior paint.
Clean the concrete wall.
If your project is indoors scrub the wall with soapy water and a scrub brush instead of using a power washer.
Step 1 dampen a sponge with warm water.
Clean the concrete surface with soap and warm water removing any old paint.
You can then add another texture or wallpaper or paint over it.
Spray the wall with a light mist of water.
Start at the bottom corner of one wall and in a single.
Use patching compound to fill any holes scratches or gouges in the concrete surface.
Wet the pointing trowel and hold it upside down as you scoop the mortar loading up its lower side.
Use a concrete primer which will help you get a smooth even surface that the paint can stick to.
Scrub away any dirt grime or gunk that is stuck to the concrete.
It s a good idea to test the concrete for moisture before you prime and paint especially if the concrete is fresh.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Then remove any existing paint or gunk using a power washer or scraper and wire brush.
Cover the whole wall in a second layer of concrete that is about inch thick.
Let the concrete cure completely three to five days.