Novabloc - 108 Sq Ft Waterproofing Membrane and Vapor Retarder for Showers Waterproofing applied directly under tile 3' 3" Wide x 33' Long (1m x 10m) Economical alternative to the heavily advertised brand (the orange one) Extremely thin and pliable, minimal build up at corners No water soaking into backerboard or floor = shower dries quicker