Are your products Certified for Potable Water We do not have a Potable Water Certification. Related articles What product do you recommend for a 20x20 flat roof ( pitched 4 1/2" over 20' ) which will be planted. AKA green roof? Can this product be used to waterproof shower walls and base? Can it be tiled over? Can Liquid Rubber Products be used in Drinking or Potable Water situations? How much material for a Plywood Aquarium Calculate Shipping Comments 0 comments Article is closed for comments.