Prepare a solution of water mixed with any household cleaning chemical.
How to repaint concrete wall.
For repainting concrete with chalky old paint use boysen chalk blocker b 7304 as surface conditioner.
Check to see if the concrete has been sealed.
Place a piece of plastic food wrap on the surface and leave it for 24 hours.
Concrete sealer is available at most hardware or home improvement stores.
Apply a primer to the concrete to ensure strong adhesion of the paint.
Here s how to update your worn down concrete the correct way.
You ll paint this sealant onto the concrete in long even strokes.
Roll on 1 coat of concrete sealer and allow it to dry overnight.
Remove efflorescence a white powder that forms on moist concrete.
Use patching compound to fill any holes scratches or gouges in the concrete surface.
Apply 1 layer of concrete paint primer with a paint roller.
In case of mildew infestation treat with a bleach solution 1 3 laundry bleach to water respectively by swabbing or brushing.
Get as much ventilation in the room as possible.
Seal the concrete wall.
Try krud kutter concrete clean etch 8 50 for 32 ounces.
Clean the concrete thoroughly with trisodium phosphate tsp and warm water then let dry.
Before adding your color you need to use primer to ensure that the paint will stick.
Clear top coat sealer may be applied over latex paint for added protection.
Concrete sealer prevents water from absorbing into the concrete and helps prevent stains.
Allow the concrete surface to dry.
Scrub the surface with a long handled brush.
Step 1 cleaning and scrape.
Apply wide painter s tape to the wall where it meets the floor to avoid painting the wall.
Scrape any areas with loose or flaking paint and lightly sand using fine 120 grit sandpaper.
If you need more cleaning muscle try phosphoric acid masonry cleaner 27 per gallon.
Get complete coverage and make sure your sealer is completely dry before moving on to the next step.
If the concrete has not been sealed there will be condensation on the plastic wrap.
Use a masonry or concrete sealant to seal the wall.
Wash the wall with tsp and let dry thoroughly.
Fix any cracks with a concrete crack injection kit.