Geocomposite drain
HYDRODUCT® 220 GRACE Construction Products

Pre-fabricated geocomposite drain for use as a combined drainage and protection layer with Grace waterproofing membranes
Description:
Hydroduct® 220 is a strong, preformed 0.433 in.(11 mm) thick geocomposite drainage sheet system, comprising a hollow studded polystyrene core, covered on one side with a nonwoven, needle punched polypropylene filter fabric and on the other side with a smooth polymeric film.
Advantages:
- Enhances waterproofing-eliminates hydrostatic pressure build-up
- Efficient water collector/deflector-can be used as a sandwich drainage layer between lagging and the reinforced concrete structure
- Smooth polymeric sheet-compatible with Preprufe®, Procor®, or Bituthene® membranes
- Simple convenient drainage and protection layer-serves as robust membrane protection and drainage
- Geotextile fabric filter-allows ground water to pass into the drain core while restricting the movement of soil particles
- High flow capacity-drains 16 gals/min./ft (200 L/min./m) width
- Rot proof-unaffected by permanent immersion in water, bacteria, dilute acids and alkalis
- Economical-eliminates imported aggregate drainage layers
- Studded core-allows water to flow to designated drainage collection points