The painted brick has its own style and is seen more as decorating trends change. If you plan on painting the exterior brick, make sure to patch cracks and grooves that are often caused by ivy that breaks through when the bricks are exposed. Kindly follow these step recommended by a professional exterior painter in St. Louis.
Step 1 – Clean the brick
Start with your pressure washer. It is the best way to clean exterior brick. Set the washer in place between 1500 and 2000 psi. Do not go more than that pressure range when you wash the bricks, because too much force may damage the mortar. Add soap to the current to remove more difficult deposits. The main point of washing is to clean all debris, dirt and peeling paint, nothing else.
After the washing, leave the brick with enough time to dry completely. This will take a few days at least because brick is a porous material that retains moisture. Do note that the pressure washer can be dangerous. Follow all product instructions and always point the water jet away from you and others.
Step 2 – Remove peeling paint and fix mortar
Remove all loose paint that is left on the face of the brick or otherwise it will cause early flaking when you finally implement your coat. Use a hand scraper for large rooms. Do not use a wire brush. It is easy to get carried away and leave imperfections on the brick with a wire brush.
Step 3 – Sand the brick smooth
Smoothen the brick with either a palm sander or circular sander with a minimum of 80 sandpaper. Next, repair any missing and damaged mortar. You can use an acrylic premixed mortar patch that allows you to initiate painting as soon as it is dry. Alternatively, you can mix a mortar dust yourself, but it will take a few weeks to dry before you can start priming.
Step 4 – Prime brick
Always use a latex or acrylic masonry primer paint of high quality for exterior bricks. Remember that all the mortar and bricks must be primed. The places where mildew and efflorescence occurred first must be the first to be primed. This is so that you can provide an extra layer if necessary. It usually takes 1-2 hours for the layer to dry. Make time for the primer to dry completely before moving on to painting.