Step by step process of spray painting a concrete block wall.
Painting concrete block walls exterior.
Primer dries in two hours.
Step 4 caulk and seal.
Apply an even coat with a wide paintbrush.
Step 3 prime the block wall.
You will need a paint that is.
Count on split face block needing twice as muck primer and paint when compared to smooth block.
Work slowly taking a little bit of paint on the roller at a time and applying in long smooth strokes.
Exterior block surfaces can be either but interior block surfaces are always smooth.
Select paint appropriate for your outdoor project.
Painting concrete block walls always starts with the removal of dust and dirt efflorescence and all loose or peeling paint.
There are two basic types of finish on concrete block smooth and split face.
First step in preparing block wall for spray painting is to move any gravel away.
Moving gravel away from the wall.
Pressure washing a block wall.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Paint a concrete block wall in 5 steps.
Wait at least eight hours but no more than 30 days to paint.
Step 1 clean the wall.
For exterior foundations and walls use exterior grade block filler such as behr s concrete and masonry bonding primer which also is good for interior concrete 17 98 per gallon.
Choose paint for your project.
Clean the concrete wall.
Like the first coat you ll want this to be as even as possible.
For hard to reach or tight places you can use a brush but your brush strokes may be visible on smooth cinder blocks.
Step 2 repair the mortar.
If you re thinking about painting a concrete block wall you should realize that moisture could be a problem and of course moisture will allow paint to separate eventually from whatever you have.
Any gas pressure washer will work.
Paint the entire wall with a thin coat of a concrete sealer or concrete primer.
Step 5 painting concrete.
Preparing the concrete block for painting.
Allow it to dry for four hours or for the time indicated on the sealer.