Scrape until you don t see any peeling paint on the wall.
How to paint peeling concrete walls.
Choose a flat blade to scrape against the wall with the peeling paint.
Masonry paint 20 per gallon can be tinted and is much thicker than exterior paint.
Do not etch painted surfaces.
The old paint should come right off and fall onto your towel plastic sheet or tarp.
I have a concrete porch that s been painted several times.
You can use a stiff blade putty knife wire brush or paint scraper.
Exterior house paint can crack and peel on concrete.
Scrape off all of the peeling paint.
But the paint bubbles and peels off leaving a mess.
For smooth troweled concrete with some porosity 1 part h c concrete etching solution to 2 parts water should be used.
For very smooth surfaces troweled surfaces with no porosity use h c concrete etching solution at full strength.
Wipe off the wall with the tack cloth to remove dust.
Some masonry paint is thicker than exterior paint and.
Choose paint for your project.
You will need a paint that is.
Select paint appropriate for your outdoor project.
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.
Repair any cracks or blemishes in your wall with concrete patch.
For exterior projects use a power washer to rid the wall of all dirt and dust.
How to prevent peeling paint on a concrete porch.
Apply the primer to the wall first to seal the wall and prevent moisture problems.
Apply it with a masonry brush 5 to 8 a high capacity 3 4 inch or higher roller or a texture roller 5 50.