What is SV40 Two Pack Urethane/Acrylic? SV40 is a high solids, high build Two Pack Polyurethane specifically formulated to achieve a smooth, hard wearing surface for concrete and masonry surfaces. It is suitable for use on areas which require an extremely hard, yet flexible protective coating with excellent UV resistance. Retains colour, weathering properties and abrasion resistance. Features Non-Yellowing High Build Hard, very durable coating Good dry and through cure Excellent mark and scuff resistance Excellent chemical resistance Excellent anti-graffiti coating