Beger Rain Quick Primer B-2900Multi-purpose water-based primer for exterior and interior | Fresh and Old ConcreteSurface moisture for 70%./ Rising damp moisture for 25%.Deep penetration, excellent hiding coverage, and easy to apply. Excellent efflorescence and alkali resistance. / No lead, mercury, and heavy metals. Low odor and VOCs. Suitable for both exterior and interior on old, new, and fresh concrete.Application Area 40-45 sq.m/gallon/coat