Excess residue may interfere with adhesion of the coating.
Prep concrete block wall for paint.
Scrub the entire wall briskly with a dry stiff bristled scrub brush or a stiff wire brush.
All it takes is time and some very careful preparation.
Repair any cracks or blemishes in your wall with concrete patch.
Smooth face concrete requires considerably less primer.
During the preparation pay attention to any loose mortar and large cracks.
Patch gouged or otherwise damaged areas with concrete filler.
According to reliable builder masonry paint is specifically designed for good adhesion durability and breathability.
Slip on a face mask and safety eyewear to protect your respiratory system and eyes from any harsh dusty residue released into the air by the.
Typically you can cover about 200 square feet per gallon of block fill primer on a smooth face and about half that amount on split face.
Apply two healthy coats with a 1 2 in.
Use a commercial style pressure washer and at least 2500 psi.
Thoroughly rinse the concrete surface with clean water using a hose with a high pressure nozzle or a pressure washer.
The surface is ready for priming when it feels like medium to light grit sandpaper and no residue or loose concrete remains.
Select paint appropriate for your outdoor project.
When you set out to paint concrete the process.
Examine the walls.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Choose paint for your project.
A suitable spray pattern is the 15 degree tip held 12 inches from the surface.
Paint your concrete walls with masonry paint.
You will need a paint that is.
Nap roller and you can clean up with soap and water.
Make sure to prime all mortar as well.
Clean the concrete wall.
Paint should be about 1 8 inch thick to ensure waterproofing.
The texture will determine the amount of primer and paint needed.
Apply paint with a sprayer roller or brush in even strokes.
Clean the concrete surface with tsp.
Any remaining loose paint will need to be removed manually.
Using a solution of trisodium phosphate tsp and warm water clean the.
Waterproof doesn t mean this is a solution to serious water problems in your basement.