Scrub the surface with a hard bristled broom or.
Muriatic acid concrete stain removal.
Step 4 try muriatic acid.
Allow the solution to sit for a few moments.
Pour chemical floor stripper on the concrete.
Usually a solution of 4 parts water and 1 part muriatic acid is enough for a heavy duty cleaning unless specified otherwise.
You know the muriatic acid is working if you can see it bubble as it reacts with the cement.
How to remove muriatic acid stains from concrete step 1.
Play pause space step 2.
Mix a solution of 1 part muriatic acid to 8 parts water in a bucket.
Choose a stripper that is recommended for concrete.
Pour the acid into the water to avoid.
If you need a stronger solution mix 1 part acid to 10 parts water.
Always add the acid to the water never the other way around or you can cause a heat reaction which can make the solution burp up out of the container.
Brush the diluted acid solution onto the stone using a stiff bristled plastic brush.
Treat with muriatic acid if all else fails.
You can buy muriatic acid from your supermarket but you should handle it with extreme caution.
Muriatic acid must be diluted with water before use.
Pour the solution over the painted or stained concrete surface.
Vacuum the concrete to remove all particles and debris.
How to remove paint from concrete with muriatic acid step 1.