The Geokit® 0.4 mm LDPE Drained Sand Filter is a traditional solution for the vertical drained sand filter. The 0.4 mm LDPE film makes it possible to make the gravel pack impermeable. For perfect waterproofing of the tank DTU 64.1 requires the use of the Geokit with the PVC geomembrane (see corresponding Flexirub reference).
The components
1 LDPE film, 0.4 mm
1 separation geogrid
1 separation geotextile, 150 g/m²
1 collar with waterproof flanges
1 adhesive collar