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Decra Oberon Ventilated Monopitch Ridges

Decra Oberon - Monopitch Ridge using Ridge/Barge Cap and Universal Ridge/Hip Ventilator - Detail from drawing DPTE039

 

Installation Guidance - Decra Oberon
1. Cut roofing felt min. 10mm short to allow clear ventilation through to ridge.


Universal ridge ventilator

2. Create fixing position for Ridge/Barge Cap:

  • Fix battens to top of ridge fascia sized to span from back edge of fascia to top
    edge of top tiling batten.
  • Fix 50 x 25mm batten to top of the ridge fascia board and a 38mm x 19mm batten fixed to outer face of ridge fascia board.
  • Form upstand at back edge of tile.
  • Install Universal Vent strips in front of the tile upstand and also behind the front edge of the Ridge Cap
  • Fold Ridge/Barge Cap to form monopitch ridge profile capping.

3. The Ridge/Barge caps have a slight taper in their design. Place the wider end of the ridge over the narrower end of the ridge beneath (overlap areas shown shaded grey).
Each Ridge/Barge cap should be secured with 2 nails on each side of the ridge cap through the pre-drilled holes.

NOTE: Decra Oberon Ridge/Barge Caps are tapered to allow for laps.

NOTE: Where roof pitches exceed 35° it may be necessary to adjust the return angle of the downturned leg of the Ridge/Barge Cap and use an alternative size of ridge fixing batten.

 

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