Step 4 try muriatic acid.
Muriatic acid concrete stain removal.
Muriatic acid must be diluted with water before use.
The easiest dilution to remember is 1 cup of acid to 1 gallon of water.
Brush the diluted acid solution onto the stone using a stiff bristled plastic brush.
Pour the acid into the water to avoid.
You can buy muriatic acid from your supermarket but you should handle it with extreme caution.
Scrub the surface with a hard bristled broom or.
Attach a scrub pad to a floor buffer.
You know the muriatic acid is working if you can see it bubble as it reacts with the cement.
Vacuum the concrete to remove all particles and debris.
How to remove muriatic acid stains from concrete step 1.
How to remove paint from concrete with muriatic acid step 1.
Usually a solution of 4 parts water and 1 part muriatic acid is enough for a heavy duty cleaning unless specified otherwise.
If you need a stronger solution mix 1 part acid to 10 parts water.
Choose a stripper that is recommended for concrete.
Allow the solution to sit for a few moments.
Pour the solution over the painted or stained concrete surface.
Pour chemical floor stripper on the concrete.
Play pause space step 2.
Mix a solution of 1 part muriatic acid to 8 parts water in a bucket.