Is this product good for adhering to wood. I'm looking to waterproof a 1/2 whiskey barrel for ponding ? Yes, you're correct. You'll want to bridge any joints, seams with Liquid Rubber Seam Tape. Then build your coats up with the Black Liquid Rubber Waterproof Sealant. Related articles Can Waterproof Sealant be applied to Styrofoam? How come it feels tacky? Is it cured? Can I build my final membrane all at once? What Products to use to waterproof a Floating Sauna Floor? Use in Concrete Cistern for Bathing? Comments 0 comments Please sign in to leave a comment.