1. SUBSTRATE

Typical: structural concrete

• The structure will be designed to support the ballast weight.
• The substrate will be clean, dry, smooth and free from contamination.
• It is recommended to inspect the substrate and evaluate the eventual need for levelling layer.
• 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.SINTOFOIL MEMBRANE

Typical: ST/Black/ 1.2 mm

• Any other type of Sintofoil membrane is also acceptable.
• Install loose, with overlap and welded seam as per specifications *.
• The membrane will be mechanically secured at roof perimeter and around protrusions.

* Refer to "welded seam mtechnology" section

3. INSULATION

Typical: 25 kg/m² expanded polystyrene

• Any UEAtc approved roofing board with the required thickness is also acceptable.
• Install loose with staggered joints, avoiding gaps in excess of 6mm.
• Taper the joints at roofdrains.

4.FILTER LAYER

Typical: 200 g/m² geotextile

• Install loose, with 100 mm overlap.
• Polyethylene 200µ is to be used under pavers on pads.

5.BALLAST

Typical: smooth round river washed gravel, ø 12-35 mm, 60kg/m² min.

• The ballast's weight will be sufficient to resist the wind uplift pressure.
• Do not stockpile the ballast.

Notes:
Refer to the local code requirements when applicable.
Reroofing projects will be subject to a specific study, including preliminary inspection.