Branz Skillion Roof

In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other.

Branz skillion roof. The small roof space can accelerate prob lems with moisture. Skillion roofs are commonly thought to pose more of a problem because their tight construction and narrow framing cavities provide little oppor tunity for air entiy and movement. The roof space is generally inaccessible with little natural ventilation. In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other.

Skillion roof airflows modelled airflow simulations were carried out for a monopitch skillion roof with profiled metal roofing with and without eaves. The branz technical helpline has received queries on doing this so let s step through some examples. Pink batts skillion roof insulation has been appraised as a thermal insulation material for timber framed skillion roofs of domestic and commercial buildings. Branz research provides guidance around the ventilation of these roofs.

The building in the model has a 12 m long roof with 300 mm deep eaves. The dimensions of the building are not critical and chosen only to show the effect. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture. By john wierenga 1 april 2014 build 141.