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MAPEI’s new primer for high-moisture substrates

MAPEI’s new primer for high-moisture substrates

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MAPEI recently introduced MAPEI HM Primer, a ready-to-use, low-VOC, water-based, quick-drying primer. Designed to be used with MAPEI’s peel-and-stick sheet membranes, MAPEI HM Primer promotes maximum adhesion to high-moisture substrates.
“The HM stands for ‘High Moisture’,” said Sonya Moste, MAPEI’s Product Manager for Sound-Control Membranes and Crack Isolation. “It is formulated to enhance the bond between Mapeguard® 2 and Mapesonic 2 and a variety of substrates, including nonporous concrete and metal.”
MAPEI HM Primer is low in odor and can be applied with a roller or a brush. Designed for interior or exterior applications, the primer can be applied to substrate and ambient temperatures as low as 40°F (4°C). It can also be applied to substrates with a moisture content up to 15 lbs. per 1,000 sq. ft. (6.80 kg per 92.9 m2) per 24 hours using a calcium chloride test kit (ASTM 1869). It is, however, not considered a moisture-control product.
MAPEI HM Primer is a great high-tack primer, and it is perfect for high-moisture slabs in high-humidity climates,” Moste said. “When used with our sound-control and crack-isolation membranes, it’s part of a system solution that is great for slab-on-grade concrete, as well as young concrete for new construction. This is another great addition to MAPEI’s line of tile and stone installation products.”
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Established in 1937, MAPEI Group is globally headquartered in Italy with 90 subsidiaries, including 83 plants in 36 countries. MAPEI is the world-leading manufacturer of mortars, grouts, adhesives and complementary products for installing all types of flooring and wall coverings. The company specializes in developing chemical products for every aspect of construction, from waterproofing and structural strengthening to concrete repairs and tunnel building.

Headquartered in Deerfield Beach (Florida), MAPEI North America consists of the subsidiaries MAPEI Corporation (for the USA), MAPEI Inc. (for Canada) and MAPEI Caribe (for Puerto Rico and other Caribbean islands), whose 18 facilities collectively have a workforce of more than 1,700 employees. MAPEI facilities have been certified to ISO 9001 and ISO 14001 standards. An environmentally conscious manufacturer that reinvests 5% of its revenue into R&D, MAPEI offers training for architects, contractors, installers and distributors through the MAPEI Technical Institute. For more about MAPEI, visit or call 1-800-42-MAPEI (1-800-426-2734).




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