Bentech Bentonite® is a 6.4mm thick GCL membrane, comprised of woven and non-woven geotextile, with a thick layer of natural sodium bentonite in the centre. Fibers of the two geotextiles are interlocked by a patented needle-punching process which encapsulates the natural sodium bentonite, keeping it evenly distributed between the two layers of geotextile.
By choosingBentech Bentonite®, you can be assured that you are installing a tried and tested, Codemark Certified product that comes with a full 25 year material Service Life of Structure Product Warranty. Used since the Dark Ages to waterproof Castles, Moats and Dungeons, Bentonite was formed millions of years ago and when installed to specification is warranted for the service life of the structure.