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Decra Oberon Ventilated Ridges

Decra Oberon - Ridge using Ridge/Barge Cap and Universal Ridge/Hip Ventilator - Detail from drawing DPTE021


Installation Guidance - Decra Oberon

Ridge Course D Ridge
The correct way to install the top course of tiles and the ridge tiles is dictated by whether you are trying to achieve an unventilated or ventilated ridge detail.

Universal ridge ventilator

Ridge/Barge Caps Ridge (Ventilated)
Cut underlay short of ridge line and fit two tiles battens either side of ridge, leaving a sufficient gap for ventilation.

Fix additional tile batten to suit ridge on top of rear of the two tile battens.

Lay top course of tiles with back turned up 38mm against top tile batten.

Place Ridge/Barge cap into position over the top batten and the upstand edge of tile. Pull bottom edge of ridge cap away from the upstand edge of tiles and slip Universal 'D' ridge/hip ventilators into position on each side of the Ridge/Barge cap. Ventilators should run continuously along each side of the ridge cap.

The ridge cap and ventilator to be nailed through the predrilled holes in the downturn of the ridge cap into the face of the batten, using two Decra fixing nails on each side of the Ridge/Barge cap.


Ridge/Barge Caps Nailing & Lapping
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.

Ridge/Barge Cap Ends

  1. Snip and fold out flap to suit intersection of Ridge/Barge caps with gable mounted Ridge/Barge caps.
  2. Slot end cap into position behind the flaps of the Ridge/Barge caps and fix into position with pop rivets or small zinc plated self tapping screws and cover with Decra finishing kit.
  3. Install Ridge/Barge caps and nail into position.
  4. Nail lower edge of end cap.



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