The nidaplast RA-ZS (Sterile Zone) product is a block of extruded honeycombs in very light polypropylene. Its small dimensions (600 x 400 mm) are suitable for creating a sterile area on a garden roof (replacing gravel, pozzolana, etc.). They provide access to the sealing lifts in the sterile area. The blocks are available in 3 thicknesses: 100 - 250 or 500 mm. Other thicknesses can be studied on request from a certain volume.

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Realization of sterile zone in Nidaplast RAZS

In accordance with DTU 43, it is necessary to create a sterile zone deliberately devoid of vegetation as part of the development of a garden roof. These sterile zones allow easier access to the waterproofing statements on the periphery of the roof and at the level of ventilation, skylights, etc.

The width of a sterile strip is at least 40 cm. The nidaplast RA-ZS honeycomb modules are perfectly adapted, easy to position and are above all ultra light honeycomb structures.

On the surface of these sterile areas, the nidaplast RA-ZS blocks can accommodate nidagravel plates to obtain a gravel finish. The gravel is then trapped in the cells and does not escape under the effect of the wind or trampling.

The nidaplast RA-ZS blocks have a high compressive strength (300 kPa) and exhibit good resistance to acids, chemicals, micro-organisms, molds and rodents.

Product-related applications

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Our achievements

Gravel car parks, rainwater storage basins, lightened road embankments or lightened composite parts for boat building, Nidaplast products can be found in numerous projects throughout the world.

Urban parking in stabilized gravel
Transparent backfill in the main bed of a watercourse
The honeycomb in recreational vehicles