Ion-Bond Armor Industrial Concrete Sealer (5-gals) &ndash; Subsurface Waterproofing Sealer | Penetrates Smooth Concrete & Masonry | Use on Fiber-Reinforced Concrete | Penetrates Through Latex Paint PENETRATES up to 1-1/2" into concrete, brick, or masonry (3 x deeper than a typical siloxane sealer) INDUSTRIAL GRADE - Able to seal against negative side water pressure. PERMANENT - No re-applications needed. Virtually indestructible. PAINTABLE - Leaves surface suitable for paints, adhesives, or thinset PAINTED SURFACES - So penetrating that it even waterproofs through a single layer of latex paint