Polyfond Kit Drain by Mapei Products in New Zealand

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Polyfond Kit Drain

Mapei Products in New Zealand

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Description

POLYFOND KIT DRAIN is a protection and drainage system made from high-density extruded polyethylene (HDPE) laminated with a polypropylene needle-punched nonwoven.

It is particularly effective in protecting the waterproofing on underground structures, while also providing effective drainage capacity as well as being perfect for use in lightweight

roof gardens (extensive green roofs).

Key Features

The structure and geometry of the studs give POLYFOND KIT DRAIN excellent mechanical performance, ensuring perfect ventilation and excellent water drainage.
In addition, POLYFOND KIT DRAIN is designed to provide the waterproofing membrane with suitable protection during foundation backfilling work.
The polypropylene nonwoven ensures excellent water filtering and drainage capacity, enabling effective vertical and horizontal drainage.

Ranges

Waterproofing

Scope of Use

Vertical application on underground structures or earth retaining structures: POLYFOND KIT DRAIN can be applied on retaining walls by precutting the geocomposite to the desired size, allowing for the fact that it must also cover the drainage pipe previously set in place and covered with medium-grade washed river gravel.
Place POLYFOND KIT DRAIN with the nonwoven fabric side facing the backfill and the smooth side facing the waterproofing layer on the wall to be protected.
The edges of POLYFOND KIT DRAIN - the mechanical protection and drainage layer - must overlap by approx. 20 cm.
On vertical walls, POLYFOND KIT DRAIN must be fixed mechanically to the top of the wall with the aid of a polyethylene or metal profile with rivets; a sealant will then be applied between the profile and the concrete wall.
Horizontal application on roof gardens with no reservoir: When producing roof gardens, the drainage layer can be produced by laying POLYFOND KIT DRAIN straight on top of the waterproofing build-up with the filtering nonwoven side facing the growing medium. Drainage must be produced both on the flat part of the garden and along the vertical turn-ups around the outside edges with no break.

Limitations on Use

POLYFOND KIT DRAIN must be overlapped by at least 10 cm on the sides and approx. 15 cm on the ends, exercising great care while backfilling that the growing medium does not lift the overlapping edges, ending up between the two drainage geocomposites. The growing medium must be positioned and laid straight after POLYFOND KIT DRAIN has been installed.