Clean the area thoroughly by using a strong detergent and or mild muriatic solution, also best to use a pressure washer to lift stubborn stains. After the area has been thoroughly cleaned, wait a day or two for the concrete to dry up and get any moisture out from the concrete. After, prime the area with a concrete coating or if not readily available latex primer should do well, to seal in concrete and to make the paint match evenly. Let dry again. Prepare the paint, latex paint should do. Do not use oil-based, since it will take a long time to dry and moisture can seep in a create bubbles. Do not shake the paint, but have it stirred, to prevent air bubbles from getting into the paint. Then apply the paint in thin coatings. Do not try to paint it fast by using lots of paint at once. Stick with thin coatings. Let dry. Paint again. Continue process... 3 coatings should suffice. During drying phases, look over for any signs of bubbling. If there are bubbles, scrap the paint in the bubbled area only, and re-prime it and paint again.When painting concrete , what must one do to the concrete to get the paint to properly adhere ?
First you have to wash it down to remove any dirt or mud. A steamer or water jet blaster would be ideal for this. Then when dry, a good scrubbing down with muriatic acid to 'etch' the concrete. This will make the paint stick better.
Because of the amount of work required to prepare the concrete I suggest that you use a good quality concrete paint else, all your hard work will end up being for no reason.
there is a special paint. you can find what you need at the hardware store.
You must first put an initial batch of paint, usually a flat white color paint, then after the first paint has dried you can now paint the GLOSSY paint with the color of your choice... use latex thats comes in two types FLAT and GLOSSY
Wash thoroughly first. Paint or spray it with a mild acid like white vinegar, then let dry. Apply regular paint. You can also buy special pre-treatment at paint or hardware store, but it costs more and doesn't seem to work any better.
You need to wash it first with TSP or muriatic acid. I recommend the TSP as muriatic acid is hell to work with. After that you prime it with a paint intended for that application.
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