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.
Branz skillion roof.
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.
In fact research has shown that most skillion roofs in new zealand have no problems even those that are not deliberately ventilated.
Skillion roof airflows modelled airflow simulations were carried out for a monopitch skillion roof with profiled metal roofing with and without eaves.
The small roof space can accelerate prob lems with moisture.
Branz research provides guidance around the ventilation of these roofs.
In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other.
By john wierenga 1 april 2014 build 141.
The dimensions of the building are not critical and chosen only to show the effect.
In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other.
Pitched roofs constructed with timber rafters are described in nzs 3604 2011 timber framed buildings as either couple close or skillion roofs.
The roof space is generally inaccessible with little natural ventilation.