What is the better solution for waterproofing in showers? We have 3'X3' shower on a slab level. We have used Hydroment Gold Anti Fracture and waterproofing membrane on horizontal and vertical application. It is a latex base , paint application. Easy to use. We have received some comments that it will not hold back water as a traditional rubber membrane. Reading specifications of the product we have learned that it meets American Specifications:ANSIA118.10 and supposed to be a good barrier. Do you have any experience using this product? We have not installed tiles yet. Out tiles are 1/8" marble tiles. Thank you.