Paint should be applied in at least 3 thin layers.
How to paint concrete block walls interior.
According to reliable builder masonry paint is specifically designed for good adhesion durability and breathability.
Once your cinder block has been sealed and primed you can use any type of interior wall paint so you don t necessarily have to purchase specialty paint.
Use a commercial style pressure washer and at least 2500 psi.
Primer dries in two hours.
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.
Paint your concrete walls with masonry paint.
The paint may be sprayed on rolled on or painted on with a brush.
The paint should not be streaky or show brush strokes.
The type of paint you select for interior concrete walls will depend upon the use of the room as well as its décor.
Spread a drop cloth on the ground in front of the cinder block wall.
Paint with a sheen or gloss will be easier to maintain for example.
Apply two or more thin even coats until the desired color is achieved.
Paint should be about 1 8 inch thick to ensure waterproofing.
Wait at least eight hours but no more than 30 days to paint.
A suitable spray pattern is the 15 degree tip held 12 inches from the surface.
Apply paint with a sprayer roller or brush in even strokes.
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.
Apply the paint to the concrete block with an airless sprayer and then immediately back roll it working in sections along the length of your wall.
The first step when preparing concrete block walls is pressure washing.
Any remaining loose paint will need to be removed manually.
Unless you re an experienced painter you may want to purchase extra paint to account for more absorption than usual.
Paint your wall with concrete paint.