![]() Painting outdoor concrete walls is challenging, but color always makes the concrete look better than if it’s bare. They’ll also work much faster and avoid some of the spills and other mistakes common with DIY painting projects. They’ll have experience painting exterior walls and know how many coats are needed for a great finished product. If you aren’t familiar with a paint sprayer, you can hire a professional and pay someone to do it. Spraying is also a lot faster, especially if you know how to use the machine. With spraying, you get a nice coat of paint without splotches. Spraying the paint on exterior concrete block walls is often wise because it helps things look even. They can typically make you a custom color, so that’s not much of an issue.ĭecide what type of paint you need first, and then work to get the color you want. ![]() When in doubt, visit your local hardware store and ask for some advice on which paint to choose. It also provides a smooth finish after you’re done. Latex paint is thick and adheres to the primer very well. Usually, premium acrylic latex paint is the best option for outdoor surfaces. When painting concrete block walls outside, the type of paint you choose is crucial to the project’s success. Usually, one primer layer will do, but you can use two layers to be sure your wall is ready for painting. When you apply the primer, use a roller, and put it on in a thick layer. The primer goes into all of the pores and seals them, so when you paint, the paint stays on the surface instead. Regular exterior paint won’t adhere well to masonry work.Ĭinder blocks absorb the paint unevenly, leaving you with unwelcome paint splotches all over your walls, depending on how thick you cover things.Ī primer coat is essential when painting something like brick or concrete block walls. Have a putty knife handy to smooth out caulk lines and make them even with the wall’s surface.Īllow time for the caulk to dry before you paint. Using a caulking gun and caulk, run over any cracks to fill them. Tiny hairline cracks are no big deal, but you’ll need to address larger cracks where the paint will seep inside. If your concrete block wall has been around for a while, you likely have cracks in some of the blocks. There’s no sense in trying to work while it’s raining intermittently because the paint won’t dry, and it will run if there’s water on the wall. If you do encounter rain in the middle of your project, stop what you’re doing and wait for the weather to clear. Instead, give yourself at least a few days of dry, clear weather for your project, so you’ll have enough time to let things dry and finish the painting before the next rainfall. This will help you avoid painting in a storm or dealing with humid weather that will make the paint take much longer to dry. ![]() Check the Weather FirstĬheck the weather forecast in your area before you begin painting. The paint may go deeper into the pores of the concrete as the blocks dry. Painting when a concrete wall is wet makes it harder to spot areas that need more paint or where the paint is too thick. You need to wait until the wall is washed and completely dry before you start putting on paint or primer. You can also pay a company to power wash your concrete block walls before you start painting. Thankfully, power washers are relatively affordable, especially if you look for a used one on local listings for sale in your area. In addition, it’s more likely that the paint will run, and the blocks will have trouble absorbing the paint. Painting over the debris will make the color look uneven and affect how well it sticks to the surface. Most of that debris is sticky and will require a good scrubbing before you paint. When concrete blocks are outside, they have a habit of collecting leaves, moss, sap, and a lot of other debris. Otherwise, a power wash before you start painting is a must. You can skip this step if your concrete wall is brand new.
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