1. SUBSTRATE

Typical: structural concrete

• The structure will be designed to support the earth/vegetation layer.
• The substrate will be clean, dry, smooth and free from contamination.
• Although dead level is acceptable, a slope is recommended for roof drainage.
• All vertical surfaces will be compatible with the Flashing/Substrate Adhesive *.

* Refer to technical data sheet

2.VAPOUR CONTROL LAYER

Typical: 200µ polyethylene film

• The material type will be specified if/as required by the dew point calculation.
• Install PE loose-laid with 100mm overlap and taped seam, other types as specified by manufacturer.

3. INSULATION

Typical: 25kg/m³ expanded polyurethane

• Any UEAtc approved roofing board with the required thickness is also acceptable.
• Install loose with staggered joints, avoiding gaps in excess of 6 mm.
• Taper the joints at roofdrains.
• Would insulation not be used, a protection layer (geotextile 300 g/m² minimum) will be installed.

4.SINTOFOIL MEMBRANE

Typical: ST/Black/1.5 mm

• Any type of Sintofoil membrane (recommended minimum thickness: 1.2 mm) is also acceptable.
• Install loose, with overlap and welded seam as per specifications.*

* Refer to "welded seam technology" section

5.PROTECTION LAYER

Typical: 200 g/m² min. geotextile

• Install loose, with min. 100 mm overlap.
• It is recommended to evaluate the eventual need for heavier protection, depending on subsequent layers.

6. DRAINAGE LAYER

Typical: expanded clay

• The thickness will be specified according to the garden type.

7. FILTER LAYER

Typical: 150g/m² geotextile

• Install loose, with min. 100 mm overlap.