It is highly alkali and efflorescence resistant and can be applied to surfaces with a pH of 6 to 13. Loxon Concrete & Masonry Primer/ Sealer is an acrylic coating specifically engineered for interior and exterior, above-grade, masonry surfaces requiring a high performance primer. PERMA-CRETE ® Interior/Exterior Alkali Resistant Primer is formulated to seal and protect the topcoat from hot … 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). This primer provides excellent sealing and stain blocking performance. It dries fast, is nonyellowing and has excellent priming and sealing properties. This high-performance water-based primer will promote a uniform topcoat finish and create a strong adhesion between the coating and surface. Often, acrylic primers are used before applying a urethane topcoat. It provides a highly water-resistant and resilient base. Concrete primer, called block primer, fills pores and evens out the surface. When added to Portland cement and a sand mixture, Titebond Concrete Primer enhances the bonding of new, wet stucco or concrete to old concrete, masonry, stucco and similar surfaces. “Urethanes don’t like the alkalinity of the concrete, so they repel it,” says Pachade. Because this type of primer is so durable, it is the most appropriate for industrial or commercial buildings. (Epoxy paint is the best choice for floors, which take a lot of abuse. compounds to concrete, wood, tile and other sound floor coverings. A stone masonry primer: Building stone houses using the art of slipforming, which uses stone masonry and concrete to create walls that … Epoxy primer is actually able to absorb into the concrete and creates a great grip on the surface of the concrete for painting. Gives a mildew-resistant coating. Concrete bonding primer works on interior/exterior smooth or broom swept concrete and is great for previously coated or uncoated horizontal surfaces. FEATURES AND BENEFITS Product Details. You’ll find bonding primers in acrylic, epoxy and polyurethane composition. PERMA-CRETE ® Interior/Exterior Alkali Resistant Primer is specifically designed for interior and exterior, above ground, wood, plaster, wallboard, and masonry surfaces. Also, use a bonding primer whenever topcoating concrete, says Pachade. Then, discover answers to all of the most frequently asked cement sealer questions. • Seals and adheres to concrete, brick, stucco and plaster The Top Five Concrete Sealers in 2021. Epoxy primer: Although it provides a really thin finish, it creates a very strong bond to concrete. It is highly recommended for surfaces subject to high foot traffic or automotive vehicle tires. Select a primer that’s compatible with both concrete and the epoxy paint that you’ll use as a finish coat. 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