How to Paint Cinder Block Walls for Interior Living

Written by aubrey kerr
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How to Paint Cinder Block Walls for Interior Living
You can paint interior breeze block walls. (paint brush image by Vladislav Gajic from

The key to a successful breeze block paint job is applying proper sealant and primer. Whether the surface is in a basement or above ground, breeze block is as easy to paint as drywall once the surface has been sealed and primed to keep moisture out. Moisture will cause paint to chip and flake off, so if the breeze block is part of an unfinished basement, a masonry sealer will be the most important part of the process.

Skill level:

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Things you need

  • Concrete or masonry sealer
  • Primer
  • Interior latex paint or masonry paint
  • Paint rollers and brushes
  • Scraper (optional)

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  1. 1

    Remove existing paint, if necessary. Use a rubber or metal scraper to remove any flaking paint. Flaked or chipped paint can be a sign of moisture seeping through the breeze block, so be sure to seal the surface if this is a problem. The "This Old House" website recommends using a concrete sealer containing sodium silicate to prevent indoor moisture seepage.

  2. 2

    Seal the breeze block surface. Some breeze block, especially in basements, will be treated with a waterproof sealer when the house is built. If in doubt, a fresh coat of sealer won't hurt. Sealer is generally a clear, thin liquid and is applied like paint. Allow to dry according to the manufacturer's instructions.

  3. 3

    Prime the breeze block. Choose a primer that's approved for indoor concrete or masonry use. Primers are generally white, but they can usually be tinted the same colour as your latex paint to add depth to your wall colour. Allow the primer to cure completely before painting.

  4. 4

    Paint the area, using a quality interior latex paint or speciality masonry paint. Once your breeze block has been sealed and primed, you can use any type of interior wall paint, so you don't necessarily have to purchase speciality paint. Apply two or more thin, even coats until the desired colour is achieved.

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