Sigma GPS Lift Pit Liners are a cost effective solution to the waterproofing of Brick/Block built lift pits. Fabricated from 1mm propylene/ethylene geomembrane which is cut and welded into a pre-formed, one piece unit to specific requirements.
Once drawings signed off by the contractor, The Sigma GPS Lift-Pit Liner is then folded flat and shipped to site where it can be opened out and situated into the lift pit. The Sigma GPS Lift-Pit Liner should be protected from any subsequent works with Sigma GPS Protection Board.