Roof Space Ventilation Nz

Positive pressure ventilation systems these are very common in nz in existing homes but do not comply with current ventilation standards for new builds.

Roof space ventilation nz.

Ventilating a home with no roof cavity a flat roof or a skillion roof design is something that should be planned prior to building and should involve a ventilation specialist and the architect who both understand each others point of view and the needs of the client. Skillion roofs need carefully designed and installed ventilation to reduce the risk of moisture related problems. Whilst it is possible to retrofit passive ventilation solutions to existing buildings it is highly recommended to incorporate passive ventilation during the design phase of any new building project. Nz commonly uses 4 5mm fibre cement for soffit linings with rebated timber fascia boards.

Established in 2010 blue building solutions ltd trading as vent is the specialist in the supply of passive ventilation systems and products. Soffit venting is common to all roof space venting systems. In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other. Tevs aluminium vent strips are made in two standard widths with 3mm slots either 50mm or 25mm long x 3 00m although other special sizes can be made to order.

Essentially the system works by taking air from the attic or roof space and pumping it into the main living areas though ducts or vents. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture.