I am not a plumber but your site is the closest I have come to finding out how to waterproof bubble walls, water walls, bubbling fountains,etc. Can you possibly direct me to a site that will teach how to waterproof? All I want to do is create the above for my own business and home and I can’t find any info after searching for three days. I thought I would come to the source. Thanks loads for any info you can send my way on this as I haven’t a clue how to do it.