Description:

Polypropylene non-woven filter fabric encapsulating a 26 mm studded drainage core. Installed at the bottom of basement walls and linked to the HYDRODUCT sheet (as shown on drawing) an alternative to NBS Plus a perforated sub soil drainage pipe. Connectors must be used to join HYDRODUCT Coil 150 to sub-soil drains (see drawing).

HYDRODUCT drainage sheets are pre-fabricated geocomposites comprising studded polystyrene drainage cores covered with polypropylene filter fabric. They provide efficient, cost effective alternatives to traditional aggregate drainage.

HYDRODUCT drainage sheets must link with either HYDRODUCT Coil 150 or perforated sub-soil drains at the bottom of the basement wall, and carry to the site drainage system. This ensures water is drained away from the basement structure.

Uses:

• As an alternative to traditional ‘French’ drains around the perimeter of basement structures
• With waterproofing membranes on walls of basement structures

Advantages:

• Polystyrene resists creep under long term loading – drainage capacity maintained
• High flow capacity – can drain 5.29 litres/sec/m when backfilled to a depth of 5 m
• Geotextile filter fabric prevents soil particles entering drainage core – minimises risk of clogging
• Rot proof – unaffected by immersion in water and resistant to dilute concentrations of chemicals
• No drainage aggregates needed – excavated soil re-used as backfill