Water storage membrane DELTA^®-FLORAXX

Diffusible protective and drainage membrane with water storage function. Surface drainage and water storage in one. Ideally suited for use on green as well as on inverted roofs.

The dimpled membrane is safe for drinking water, resistant to chemicals and does not rot in the ground.

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Laying DELTA^®-FLORAXX on a protective layer, for example a spun fibre fleece of 300g/sqm.

In comparison with the standard knobs, the octagon knob structure has greater compressive strength, while the perforation holes serve to allow diffusion and drain excess rainwater onto the sealing layer.

DELTA^®-FLORAXX in the inverted roof. Base layer on a separately laid, filter-stable geotextile.

DELTA^®-FLORAXX in the green roof. Substrate layer on a separately laid, filter-stable geotextile.

Advantages

Large water reservoir of approximately 7 l/sqm
DELTA^®-FLORAXX stores rainwater. This is why it serves as a water reservoir for dry periods. Excess rainwater can run off through the perforation holes punched in the dimpled sheet and can be drained on the roof waterproofing between the knobs.
80% higher compressive strength
Thanks to the octagon knob with reinforcing ribs, it has an approx. 80% higher compressive strength than standard nubs.
Vapour-permeable
Thanks to its perforation, the dimpled membrane is open to diffusion (with an SD value of approximately 0.4 m) by enabling unhindered drainage as well as vapour pressure relief. This prevents a closed water film from forming on the insulation and damaging it.
Logistics
DELTA^®-FLORAXX FLAT is also available in the format 2.35 x 1.00 m as sheet goods. 200 pieces and/or 470 sqm per industrial pallet. (Compare DELTA^®-FLORAXX: 240sqm (6 rolls) on an industrial pallet)

Application

DELTA^®-FLORAXX is also used in the inverted roof as a diffusion-open cover for the thermal insulation. The dimpled sheet is laid on a water-draining separating layer with the knobs facing the roof insulation. Then the required fill (plant substrate, chippings, gravel, crushed stone, etc.) is applied to a filter-stable geotextile laid separately on DELTA^®-FLORAXX. Even in the inverted roof, greening, the creation of terrace areas or simple gravel is possible without any problems.

DELTA^®-FLORAXX serves as a protective, drainage and water storage layer in extensive as well as intensively greened flat roof constructions. The dimpled sheet is rolled out on a protective fleece (min. 300g/sqm) above the root-proof seal with the dimpled side down. This is followed by a filter-stable geotextile on which the plant substrate is applied in the next step. The planting is then done individually.

Reference

DELTA^®

Bilgili Holding's BodrumBodrum
Bodrum, TR

BodrumBodrum is a unique building project with an authentic architecture reflecting the natural beauty of the landscape. In this context, the product DELTA^®-FLORAXX was used on the intensely greened flat roofs of the villas as water storage and surface drainage.

DELTA^®

ParkOran Residences
Ankara, TR

The ParkOran settlement with park-like green areas in Ankara has a total area of 517,253 m². DELTA^®-FLORAXX was used on the large, intensively landscaped and used underground parking garage ceilings as a water storage and surface drainage system.

Technical data

Material of the dimpled sheet	HDPE dimpled sheet perforated
Dimple height	approx. 20 mm
Compressive strength	approx. 200 kN/m² (EN ISO 604)
Air gap	approx. 14 l/m²
Servicetemperature range	-30 °C bis + 80 °C
Water flow capacity in the plane	approx. 10 x 10-3 m²/s (10 l/s · m) (EN ISO 12958)
Water permeability with vertical inflow	approx. 8,5 l/m² · s
Perforation diameter	approx. 6,5 mm
Water storage capacity	approx. 7 l/m²
CE conformity	Standard DIN EN 13252, test report no. 1.1/13525/0394.01-2009
Roll dimensions	2,0 m x 20,0 m , 2,35 m x 1,00 m (DELTA^®-FLORAXX FLAT)