DriSeal® ONYX Ultimate Moisture-Vapor-Barrier Coating and Primer is suitable for both concrete and wood substrates, accommodating a wide range of flooring types. This durable, water-based system primes surfaces, reduces substrate moisture vapor emissions, and acts as a barrier against concrete alkalinity. DriSeal ONYX is pre-mixed and formulated in black for clear visual coverage indication. It is low odor, low VOC, and contains antimicrobial protection for enhanced resistance to mold and mildew.