Branz Skillion Roof

The building in the model has a 12 m long roof with 300 mm deep eaves.

Branz skillion roof.

In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other. In fact research has shown that most skillion roofs in new zealand have no problems even those that are not deliberately ventilated. Branz research provides guidance around the ventilation of these roofs. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture.

Pitched roofs constructed with timber rafters are described in nzs 3604 2011 timber framed buildings as either couple close or skillion roofs. By john wierenga 1 april 2014 build 141. The small roof space can accelerate prob lems with moisture. Technical literature pink batts skillion roof insulation product data sheet nov16 1082revb november 2016.

Pink batts skillion roof insulation has been appraised as a thermal insulation material for timber framed skillion roofs of domestic and commercial buildings. The roof space is generally inaccessible with little natural ventilation. The dimensions of the building are not critical and chosen only to show the effect. The branz technical helpline has received queries on doing this so let s step through some examples.