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Precast Hollow Concrete Decks

Please contact us if you would like to receive a quote from one of our Approved Contractors.Pre-cast Hollow Concrete Decks

General

To obtain a smooth surface suitable for felting the deck (A) should be covered with a sand/cement screed (B).

  1. The screed (A) should be painted with two coats of Bitumen Primer (C).
  2. Torch on Multiplast 40200 (D).
  3. Loose lay the insulation boards (E) which should have fibre-glass membrane and fix them with mechanical fasteners (F) through to the concrete deck according to manufacturer's instructions.
  4. Loose lay a layer of Gruver (G) perforated felt, butt jointing in preference to lapping.
  5. Torch on Dermabit 30160 (H).
  6. Torch on Casali Dermabit Extra 4170 or Casali Dermabit Extra 43170 mineral (I).
  7. If the cap sheet (L) is Casali Dermabit 4170 it should be painted with 2 coats of Aluminium Reflective Paint (L) preferably 4 to 6 weeks after felting.

Please contact us if you would like to receive a quote from one of our Approved Contractors.

*In case of roofs exposed to high winds, we suggest to mechanically fix the underlay (H) to the deck (A) avoiding the use of Gruver (G).

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