Using a solution of trisodium phosphate tsp and warm water clean the.
Prep concrete block wall painting.
Select paint appropriate for your outdoor project.
Wash the blocks with a pressure washer or hose and scrub brush.
Repair any cracks or blemishes in your wall with concrete patch.
Proper painting of these walls requires the removal of any water and mildew before beginning as well as patching the walls to prevent to growth of mold.
The first step when preparing concrete block walls is pressure washing.
Use a commercial style pressure washer and at least 2500 psi.
Adding a smooth coat of seal krete damplock masonry and waterproofing paint can raise the visual appeal of the uninspired space.
If you properly paint a concrete block wall it will last for years with little upkeep.
You will need a paint that is.
Examine the walls.
How to prep walls for drylok.
Use behr premium concrete and masonry bonding primer to improve the adhesion of paints and stains by binding together loose particles.
Any remaining loose paint will need to be removed manually.
Patch gouged or otherwise damaged areas with concrete filler.
Clean the concrete wall.
Regardless of the finish and whether the concrete has already been painted the cleaning procedure is very similar.
Using a pressure washer on a mild pressure level of 1500 2000 psi will get the job done quickly but it s okay if you don t have access to one.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Tape off the ground or other surfaces surrounding the block wall along the base and edges of the wall so paint doesn t drip onto them.
There are two basic types of finish on concrete block smooth and split face.
Paint the entire wall with a thin coat of a concrete sealer or.
It can take your concrete walls from gray to grand with a quick drying coat.
All it takes is time and some very careful preparation.
Paint the interior walls of concrete block basements to protect against moisture.
Clean the concrete surface with tsp.
Here are 5 basic steps to help you do the job successfully.
Step 2 apply the bonding primer using a high quality pump sprayer 1 4 to 3 8 nap roller a nylon polyester brush or pad applicator.
You can use a regular garden hose to spray down the blocks and then scrub with a brush to remove dirt.
Step 1 clean the wall.
When you set out to paint concrete the process.
A suitable spray pattern is the 15 degree tip held 12 inches from the surface.
During the preparation pay attention to any loose mortar and large cracks.
A plain gray cinder block wall can be a wide expanse of bland.
Scrub the entire wall briskly with a dry stiff bristled scrub brush or a stiff wire brush.