#BEST PAINT FOR CINDER BLOCKS HOW TO#

If the concrete was previously painted, all traces of old paint should be stripped away using a wire brush, scraper, and/or power washer. The concrete must be thoroughly cleaned so all dirt, dust, debris, grease, etc. Whether you’re looking to apply epoxy floor paint for your concrete floors or coat your concrete block walls, the same basic prep work is required. Taking these steps allows the final coat of paint to properly adhere and protect the surface while offering a smooth, even finish. For this reason, it’s important to initially seal and then prime the concrete block before painting it. While it’s true that concrete paint is meant to seal the material’s openings, it’s also supposed to provide an additional layer of protection. If you’ve ever tried to directly paint a porous surface, you’re probably familiar with the paint’s propensity to soak into the surface rather than coat it. Looking for an escape, the moisture can cause the paint to bubble and disadhere from the concrete. If this occurs, the paint can actually keep the moisture in, not allowing it to evaporate. Still, water (and other materials) can weasel its way into painted concrete. These coatings seal the concrete’s pores, keeping small particles out, including not only water but also dust, bacteria, fungi, and more. Just as the proper paint job can minimize concrete thermal shock, epoxy paint for cement floors (and walls, ceilings, etc.) can protect these surfaces from moisture intrusion as well. So, the pores and cracks present in concrete block provide a prime opportunity for moisture intrusion. Water has a way of entering any hole, crack, or crevice it can fit into. Temperature isn’t the only factor that affects concrete and its paint job - moisture can be a problem as well. In other words, an otherwise perfect paint job can blister and/or peel away as things heat up or cool down too quickly. When painted concrete block undergoes thermal shock, the paint itself is often the first entity to break away from the surface. Certain types of paint, such as epoxy concrete floor paint, are designed to minimize the effects of these temperature changes. When these fluctuations are severe enough, the material can undergo thermal shock, wherein different portions of the material shrink or swell at different rates, often resulting in fracturing and other forms of damage. Porous materials like concrete, naturally expand and contract as temperatures fluctuate. The Most Common Concrete Painting Problems Concrete Block “Breathes”

#BEST PAINT FOR CINDER BLOCKS HOW TO#

Here are some challenges of painting concrete block and how to overcome them.

That said, painting over concrete block isn’t impossible - it simply requires the right preparation, technique, and paint type. In particular, the porous nature and coarse texture of concrete can get in the way of an easy paint job. This material isn’t without its flaws, either. Concrete is relatively cheap, highly durable, and can hold plenty of weight. There are many reasons to build a property from concrete block.

Best paint for cinder blocks