Do I have to coat Liquid Rubber Seam Tape? Yes, the paintable seam tape will begin to break down from UV over time. Related articles What is Liquid Rubber Seam Tape used for? How does it seal? I hope to build a concrete reflection pool 60 feet long, 4 feet wide, 4" deep build the base first; then the walls. Can I use Liquid Rubber to render the pond reliably waterproof? Carport Flat Roof What is Liquid Rubber MetalSafe Sealant used for? Comments 0 comments Please sign in to leave a comment.