Thoroughly rinse the concrete surface with clean water using a hose with a high pressure nozzle or a pressure washer.
Prep concrete block wall for paint.
You will need a paint that is.
A suitable spray pattern is the 15 degree tip held 12 inches from the surface.
Make sure to prime all mortar as well.
Nap roller and you can clean up with soap and water.
The first step when preparing concrete block walls is pressure washing.
Clean the concrete wall.
Paint your concrete walls with masonry paint.
When you set out to paint concrete the process.
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.
Excess residue may interfere with adhesion of the coating.
Apply two healthy coats with a 1 2 in.
Select paint appropriate for your outdoor project.
Any remaining loose paint will need to be removed manually.
Scrub the entire wall briskly with a dry stiff bristled scrub brush or a stiff wire brush.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Clean the concrete surface with tsp.
How to prep walls for drylok.
Choose paint for your project.
Repair any cracks or blemishes in your wall with concrete patch.
Waterproof doesn t mean this is a solution to serious water problems in your basement.
Examine the walls.
Use a commercial style pressure washer and at least 2500 psi.
The surface is ready for priming when it feels like medium to light grit sandpaper and no residue or loose concrete remains.
The texture will determine the amount of primer and paint needed.
Paint should be about 1 8 inch thick to ensure waterproofing.
During the preparation pay attention to any loose mortar and large cracks.
All it takes is time and some very careful preparation.
It s made to work on a range of masonry walls concrete block stucco or brick.
Patch gouged or otherwise damaged areas with concrete filler.
Using a solution of trisodium phosphate tsp and warm water clean the.