You can paint interior cinder block walls. The key to a successful cinder block paint job is applying proper sealant and primer. Whether the surface is in a basement or above ground, cinder block is as easy to paint as drywall once the surface has been sealed and primed to keep moisture out.

What kind of paint do you use on cinder blocks?

The prepared cinder blocks should be painted with a thin coat of exterior latex masonry paint or exterior acrylic house paint. The first coat should be completely dried, which usually takes between four and eight hours.

Is it bad to paint cinder block?

A durable paint is required for cinder blocks to prevent them from being damaged by wear and tear. If you want smooth, split-face cinder blocks, latex paint with acrylic will provide the best coverage and smoothest application.

Should I paint my cinder block wall?

By painting the walls or foundation, you increase the appeal of the space, but also it improves the moisture control from the wall. Concrete is a porous material that can absorb water from the ground and transfer to the basement through the foundation.

What kind of paint do you use on cinder block basement walls?

Paint your concrete walls with masonry paint. According to Reliable Builder, masonry paint is specifically designed for good adhesion, durability and breathability. Apply paint with a sprayer, roller or brush in even strokes.

How do you prepare a cinder block wall for painting?

1. Remove any flaking paint from the wall if it was previously painted. …
2. Fill in any large cracks with an acrylic caulk. …
3. Spread a drop cloth on the ground in front of the cinder block wall. …
4. Paint the entire wall with a thin coat of a concrete sealer or concrete primer.

How do you prepare a cinder block for painting?

Interior Preparation New unpainted concrete block walls need to have all dirt and loose mortar removed prior to priming. Painted walls will need all loose and peeling paint removed. Lift off the peeling paint with a stiff putty knife or paint scraper. Then scrub the area with a wire brush.

How do you paint a cinder block wall interior?

1. Remove existing paint, if necessary. Use a rubber or metal scraper to remove any flaking paint. …
2. Seal the cinder block surface. …
3. Prime the cinder block. …
4. Paint the area, using a quality interior latex paint or specialty masonry paint.

How do you paint outdoor concrete walls?

1. STEP 1: Patch gouged or otherwise damaged areas with concrete filler. …
2. STEP 2: Clean the concrete surface with TSP. …
3. STEP 3: Let the surface dry thoroughly before you begin to paint the concrete. …
4. STEP 4: Brush paint onto the perimeter of the concrete. …
5. STEP 5: Roll on more paint to cover the interior.

Do cinder block walls need to breathe?

Foundation walls like concrete are porous. This means they can take in 10-15 gallons of water vapor a day. … That is why your walls need to breathe. Moisture needs somewhere to go, and a house that is sealed up too tight ends up with moisture in puddles and rotten drywall.

Article first time published on

Does cinder block need to be sealed?

Cinder blocks are adaptable and enduring, but they require the right sealer to prevent water from seeping through the joints. Sealing cracks in the material can be done with a few different products on the market.

Is it OK to paint basement concrete walls?

Painting your basement walls can do more than just improve the look of your home; it can protect your foundation from water damage and moisture. … For concrete walls, use a waterproof sealant to seal the porous material, and opt for a waterproof masonry paint to finish the job.

Should you paint basement concrete walls?

DO NOT PAINT YOUR WALLS, even with Drylok or waterproofing paint. Concrete does not support fungal (mold) growth. … Also, do not attach insulation directly to the foundation walls. It behaves as a moisture trap and can also hide structural problems and cracks in the foundation.

How do you make a cinder block wall look good?

Concrete. The simplest way to cover a cinder block wall is by using surface bonding cement to create a concrete finish. Concrete helps insulate the building and keep moisture out. It creates a smooth, finished surface you can leave as is or paint.

What is the best paint to use on concrete block?

Masonry paint (also called elastomeric paint or elastomeric wall coating) is a good choice for concrete painting because it contains binders that contract and expand with the concrete. Exterior house paint can crack and peel on concrete.

How do you paint concrete blocks to look like stone?

Using a 3″ wide flat paint brush, each block is painted a different mix of the four colors. Brown & gray, tan & cream, gray & cream, tan & brown…etc. As you paint, your paintbrush will become mottled with different variations of the colors you’re using. This just adds to the variety of the “stone” you’re creating.

Can I paint over painted concrete walls?

Things You’ll Need Perhaps the simplest way to cover old painted concrete walls is to remove the original paint from the walls and repaint or stain them. Covering painted concrete walls with a new coat of paint or stain is a fairly simple project that many homeowners can handle on their own.

Can I use regular exterior paint on concrete?

Don’t use regular exterior paint — it’s not made for concrete and will tend to crack and peel as the material expands and contracts. Instead, choose dedicated driveway or masonry paint (aka “elastomeric”), which may be tinted to a color you choose.

What paint is best for outside walls?

Acrylic (water-based) wall paint is the best choice for outside walls. This kind of paint helps to make the wall waterproof, and at the same time it allows moisture that is already in the wall to evaporate to the outside.

Do I need to prime concrete before painting?

Generally speaking, priming is so essential to successful painting outcomes, concrete will always needs a primer. However, the existing surface needs to be primed before painting if: It is unpainted. It is peeling.

Can concrete blocks be painted?

Not every backyard design fits with a brown or gray concrete wall. Adding paint can improve the look of your property. Over time, concrete block walls will start to look old and even unpainted, their original colors will begin to look muted. Painting these walls can make your space feel vibrant and inviting.

How do you paint cinder blocks to look like brick?

1. Power wash the walls and allow them to dry for about 24 hours.
2. Paint the wall with primer. …
3. Paint the wall with the color that you are using to represent the mortar for the faux bricks. …
4. Build a stamp to apply the brick pattern to the wall.

Do concrete basement walls need insulation?

Walls. Basement walls should be insulated with non-water sensitive insulation that prevents interior air from contacting cold basement surfaces—the concrete structural elements and the rim joist framing. … The best insulations to use are foam based and should allow the foundation wall assembly to dry inwards.

Do solid walls need to breathe?

Traditionally built solid walls are breathable. Spalling brickwork, the result of using hard cement mortar for repointing.

Do brick walls need to breathe?

Brick walls suffer water damage The next point to remember is this: bricks need to breathe. … When you coat them with paint you have effectively closed the pores of the bricks preventing them from breathing. In a perfect world this doesn’t sound like a bad idea because it effectively keeps the water out as well.

What do you seal cinder block walls with?

To waterproof, strengthen, and preserve the overall appearance of your basement cinder block walls, seal the blocks permanently against moisture and efflorescence with RadonSeal Plus Penetrating Concrete Sealer.

What is the best way to seal concrete blocks?

The most common type of sealer to use on exterior cinder block is a water repellent sealer. Water repellent sealers penetrate into the cinder block and the grout where they chemically react to form a hydrophobic barrier within the pores that causes water and other liquids to bead off the surface.

How can I cover my basement walls cheaply?

Fortunately, you can cover basement foundation walls quickly and inexpensively. Attach wood furring strips, Z-shape channels, or 2×4 studs to flat, dry masonry walls, then add insulation and cover the strips or studs with drywall.

How do you paint a basement concrete wall?

1. Thoroughly clean surface before applying paint. Since using a pressure washer in your basement isn’t realistic and might damage things, you can use muriatic acid to clean the concrete before applying your paint of choice. …
2. Seal up any open joints. …
3. Generously apply paint. …
4. Quality.

Is Drylock good for basement walls?

Drylok is a product that is used to stop water seepage on interior masonry walls. It is supposed to seal basement foundations, primarily block foundations but I’ve seen it on concrete as well. Of course, the reason you need to seal any basement foundation is because the foundation is porous.

How do you make concrete basement walls look good?

If your concrete-block basement walls are dry and free of efflorescence or mold, you can seal them with a masonry sealer or all-purpose water-base primer-sealer and paint with a high-quality latex paint. Paint is an easy way to make the basement feel warmer, brighter, and more welcoming.