Prime the Concrete Concrete primer, called block primer, fills pores and evens out the surface. For exterior foundations and walls, use exterior-grade block filler, such as Behr’s Concrete and Masonry Bonding Primer, which also is good for interior concrete ($17.98 per gallon).Click to see full answer. Thereof, do I need to prime concrete before painting?For a clean and even coat of paint, your concrete surface will need to be thoroughly cleaned before primer is applied. Most primers will dry in a few hours, but home improvement professionals suggest waiting a full eight hours after priming before applying paint just to be sure.One may also ask, what is cement primer? Cement Primer. Water-based Adhesion Primer. An adhesion primer that penetrates new cement plaster, fibre-cement, concrete and brickwork that resists alkali, peeling and efflorescence. Herein, what is the best paint to use on concrete? The Rust-Oleum Epoxy Shield 225359 Concrete Floor Paint is a great choice of concrete paint for sealing and protecting a rough concrete floor, making it into a safe, easy to clean surface suitable for general household use.How do you get paint to stick to concrete?ANSWER: Today’s epoxy, polyurethane and acrylic paints wear much better than oil and alkyd paints on concrete. Before applying a water-resistant paint, clean and roughen the surface. Use a trisodium phosphate solution or strong detergent to scrub the floor.
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