Use method

The geotextile should be placed with the polypropylene side facing the support (the darker side) and fixed by anchor nails with washers; in vertical walls, the installation must proceed from the bottom, after having made a suitable cement mortar cove, to be made preferably with OSMOCEM 447, at the corners produced between the base slab and the elevation wall, in order to facilitate laying the sheet.

Each mat must overlap with the adjacent one by at least 10 cm, arranged to ensure the vertical joints are staggered. It is essential to ensure the mats have an appropriate flap at the geometric discontinuity of the work, of the top of the structures etc. Pay particular attention to laying the bentonite geotextile at the corners, wells, stairs, and reinforcement rods protruding from the floor slab.
Avoid proceeding with concrete covering works of bentonite geotextile in anticipation of heavy rains. In the impossibility of a timely backfill it is necessary to provide for the temporary protection of geotextile with polyethylene sheets of 100-150 g/m².

In case bentonite geotextile have been installed outside the perimetral brickwork, do not backfill the excavation with material other than sand (sharp rocks, crushed by the weight of dry aggregates, could tear the bentonite sheet).

For more information please contact our Technical Service.