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MEMBRANE PROTECTED ROOFING SYSTEM (INVERTED ROOF)

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.

Roofing System