Attach a diamond sanding pad to a hand held grinder.
Sanding paint off concrete wall.
Scuff sanding not only helps remove the old product but it gives the concrete surface a slightly rough texture.
Clean the concrete surface thoroughly and let dry.
After the first pass go over the floor with a fine or superfine sandpaper disc to finish the surface.
Coarse sandpaper would also be useful if you wanted to take the paint off only a doorframe or trim and leave the walls covered.
If you applied a membrane much of the paint will come off when you remove it but you ll still have to scrape and scrub.
Examine the concrete floor to ensure you have removed any paints stains or other coatings.
Then wipe the wall with a soft cloth to remove any loose paint or dirt before starting.
Scrape peeled or chipped areas and apply paint stripper.
Peel the membrane if you used one and scrape off the paint using a paint scraper.
Wash the walls with dishwashing soap and water.
The most common way to remove paint is by scraping it off and the same is true for concrete walls.
A diamond pad is the only type strong enough to cut through.
Repeat sanding as necessary until the sanding is complete.
If paint comes off on the rag the old paint is latex.
Before starting lay a cloth on the floor beneath the area you will be working on so that the flaking paint can be easily removed later on.
Be cautious when using course grit sandpaper because it can seriously damage the underlying surface and create large score marks in the softer materials such as wood if you end up using the sander exercise caution follow the product instructions and wear protective gear.
Dry the area with a towel.
Clean the area of dust with a broom and dustpan after finishing.
Dip a rag in alcohol and rub over the area.
How to sand concrete walls step 1.
Press the grinder.
Clean a small area of the wall with warm water and detergent.
Scuff sanding is also the first step in preparing newly cured concrete for painting.
Collect the paint residue and put it in contractor bags for disposal.
Hardened residue may require a scraper.
How to remove paint from concrete step 1.
In this video i use an angle grinder with a diamond wheel and dust collection to remove old floor paint from a concrete porch.
When you set out to remove paint from concrete the first.
The best concrete paint results come from careful preparation and concrete repair followed by application.
Remove the soap residue by rinsing the walls with a sponge and.
Sand off any splatter residue lumps or uneven areas on the concrete floor.