Roof Vents & Collars

Roof Vents

Moisture venting helps remove any retained moisture in the substrate. When working on substrates where moisture is present, it is vital to vent under the membrane. Failure to do so will allow the entrapped moisture to expand under the membrane causing bubbling.

Roof-space venting of confined skillion type roofs creates air flow and equalises roof-space pressure. Roof space venting minimises temperature variations across the roof and so reduces substrate movement due to thermal expansion and contraction.

A minimum of two vents are required in each roof area to be vented. Vents should be installed for every 50m² of roof area.

 Roof Vents Data Sheet (246KB)