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