Cleaning Concrete Prior To Painting

Clean the concrete 1.

Cleaning concrete prior to painting.

Remove dirt and grease with trisodium phosphate 6 30 per quart concentrate or choose a more earth friendly. Pour dry dishwasher detergent or a concrete cleaning agent on the stain. Using a wet vacuum will dry the areas quickly without wetting the rest of the concrete. You want the surface to be as clean and bare as possible for the best coating of paint later on.

Prime and paint priming before you paint concrete floors helps ensure that your new look will stick. Yank off any vines moss or other plant life covering the concrete. Let the detergent sit for 45 minutes then pour boiling water on the area and vigorously scrub the stained section with the broom. Scrub the surface with a long handled brush.

If oil happens to migrate to the surface darkening it before you can coat it it can be cleaned again dried and painted as soon as possible to allow the paint to dry before the stain reappears another time. For stubborn stains use muriatic acid in combination with your pressure washer set to at least 1200 psi. Scrape any areas with loose or flaking paint and lightly sand using fine 120 grit sandpaper. To make the best result in cleaning the concrete wall that is not already painted you also can add another bucket that you should fill with warm water.

Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water. Prepare to mop the concrete with a trisodium phosphate solution tsp. Allow the concrete surface to dry. Opening up a tight surface.

Hydrogen peroxide or ammonia also work well too. Your supplies are likely to be a bucket scrub brush and detergent. Mop the tsp solution onto the entire concrete floor using a sponge mop. Remove efflorescence a white powder that.

The next step that you can do is to wring the rag and then try to wipe down your walls. Use a pressure washer to finish off remaining roots and dirt. Yank off vines and moss growing on the foundation. Existing paint needs to be scraped and sanded.