Skillion Roof Construction Nz

The roof could be constructed on or off site.

Skillion roof construction nz.

Skillion or exposed rafter roofs were framed up on site. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture. A skillion roof is different from a standard flat roof though it has a steeper and more noticeable pitch. If the product is wet replace before installing.

A skillion roof is a roof that tends to have one sloping surface in contrast to a gable or hip roof that tends to have two or more sloping surfaces meeting near the middle. This creates a higher risk of condensation which can ultimately cause damp mould and structural decay. Nz foam provides a skillion roofs insulation system that can enhance the reduction of heat cold loss that will exceed the minimum r value under the new zealand building code nzbc 1. The dimensions of the building are not critical and chosen only to show the effect.

Hip roofs and gabled roofs have at least two sloping sides which meet towards the centre of a building in a ridge or peak. The skillion roof is somewhat different in that it only has one single flat surface. What is a skillion roof. Modern architectural homes use a variety of roof designs and mammoth skillion sections can be used in any roof design where the ceiling runs roughly in parallel to the roof line.

Skillion roof airflows modelled airflow simulations were carried out for a monopitch skillion roof with profiled metal roofing with and without eaves. Skillion roofs need carefully designed and installed ventilation to reduce the risk of moisture related problems. In australia a skillion roof is also commonly called a shed roof. Cathedral style roofs and raked ceilings are generally skillion roof constructions where the ceiling line and roof line are in parallel.

Retrofit of insulation in skillion roof cavities is typically done when the roof cladding is removed. Insulation 2nd edition this book describes the statutory requirements for insulation and the different types of insulation available in new zealand. Specifically designed for skillion roofs provides new zealand building code nzbc levels of thermal insulation while providing minimum ventilation clearances. The building in the model has a 12 m long roof with 300 mm deep eaves.

Skillion roof insulation may only be installed in roof cavities and is not suitable for installation in walls. The application of the system can be installed from above or beneath the roofing cladding. Ensure the product is installed and all cavities dry.