Use a concrete primer which will help you get a smooth even surface that the paint can stick to.
How to paint concrete block walls interior.
Any remaining loose paint will need to be removed manually.
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.
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.
Wash the blocks with a pressure washer or hose and scrub brush.
Paint your wall with concrete paint.
The type of paint you select for interior concrete walls will depend upon the use of the room as well as its décor.
Make sure to apply 2 coats to achieve the highest durability.
Paint the area using a quality interior latex paint or specialty masonry paint.
Paint with a sheen or gloss will be easier to maintain for example.
The paint may be sprayed on rolled on or painted on with a brush.
According to reliable builder masonry paint is specifically designed for good adhesion durability and breathability.
Before you paint and after you seal your concrete you need to prime your wall.
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.
Painting interior concrete walls can add warmth to a basement at very little cost.
Use a commercial style pressure washer and at least 2500 psi.
Allow to dry for 24 hours.
The first step when preparing concrete block walls is pressure washing.
The paint should not be streaky or show brush strokes.
Because concrete is porous it absorbs a lot of paint.
Apply paint with a sprayer roller or brush in even strokes.
Apply two or more thin even coats until the desired color is achieved.
Unless you re an experienced painter you may want to purchase extra paint to account for more absorption than usual.
A suitable spray pattern is the 15 degree tip held 12 inches from the surface.
Paint sprayer or brush.
You ll probably need to wait about 48 hours after applying primer before you can paint but don t wait more than 30 days to paint.
You can use a regular garden hose to spray down the blocks and then scrub with a brush to remove dirt.