atal are Structural Waterproofing and Ground Gas Protection specialists. We are qualified in waterproofing technologies which include our Sodium Bentonite Membrane, which is the original bentonite membrant. It is unique due to having true bentonite to bentonite lap.atal have been trading for over 6 years, and in that time frame have completed a variety of high profile projects and pride ourselves on our excellent quality of service. Our aim is to give peace of mind, so we offer… Show more atal are Structural Waterproofing and Ground Gas Protection specialists. We are qualified in waterproofing technologies which include our Sodium Bentonite Membrane, which is the original bentonite membrant. It is unique due to having true bentonite to bentonite lap.atal have been trading for over 6 years, and in that time frame have completed a variety of high profile projects and pride ourselves on our excellent quality of service. Our aim is to give peace of mind, so we offer three grades of warranty. To ensure there are no grey areas, we take the design responsibility from the architects and engineers and design bespoke specifications for your project. Our mantra is that we will always look to give you the most cost effective solution without compromising the relevant standards we have to work to. Show less