Duo pitch roof with clear air path Where breather membrane is to be installed on top of rafters (i.e in contact with insulation) and underneath 50mm x 50mm counterbattens (or 38mm where a Monarperm Breathe vapour permeable membrane is used).
Eaves to eaves ventilation with a continuous opening equal to 25mm. Free airspace between insulation and underlay of at least 50mm (or 38mm where a Monarperm Breathe vapour permeable membrane is used). Ridge ventilation with a continuous opening equal to 5mm at each side of ridge.
i) Decra Eave Mesh providing 25mm ventilation used in conjunction with Decra warm roof eaves guard and Decra warm roof eaves closure flashing.
ii) Decra Universal Ridge/Hip Ventilator (all Decra tile profiles) or Decravent D Ridge system (Decra Classic and Noxite tile only) providing continuous ridge ventilation.
Alternatively: Tile vents at appropriate centres to provide equivalent of a 5mm continuous opening.
Decra Eaves Ventilation System:
Which is the right eaves ventilation system for your roofing project?
Ridge Ventilation Components:
Which is the right ridge ventilation system for your roofing project?
Tile Ventilation Components:
Read more about the range of tile ventilation components and their order codes
Tile Ventilator Spacing Charts:
Recommended tile ventilation spacing's to achieve 5,000mm², 10,000mm² or 25,000mm² per linear metre please click on the appropriate link below
Decra Classic and Noxite Tile
Decra Stratos and Oberon Tiles