Pitched Roof Sarking Insulation

Csr recommends that all tiled roofs with a pitch of less than 20 are sarked and the bca mandates this requirement for rafter lengths greater than 4 5 metres.

Pitched roof sarking insulation.

7 2 14 underlay and sarking. Roof sarking is an thin insulating membrane that helps protect the roof space from water and dust. Usually this construction is a ventilated roof which will have sarking felt. The great advantage compared to insulating from the inside is the uninterrupted insulation shield and the exclusion of thermal bridges.

7 2 15 ventilation vapour control and insulation. Unilin offers sarking as solution for insulating your pitched roof. Unilin sarking boards are used to insulate a pitched roof from the outside. Where the roof pitch is 15 or more.

Aside from the structural components it is fitted with insulation and roof sarking. It is mandatory under the building code of australia bca that all tiled residential roofs regardless of roof pitch with a rafter length greater than 6 metres must be sarked. To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. Insulation pitched roof once you understand that 30 of a building s heat is lost via the roof which does nothing at all to help your home s energy level you realise why it makes sense to focus first on the subject of roof insulation.

Pitched roofs that have insulation at ceiling level should be ventilated to the outside air. They needn t be used in every application and instead their use largely depends on where in the country you are based and what type of construction you are building. Ventilated roofs require a 50 mm air gap above the insulation. Sarking boards are softwood boards generally about 150 mm wide that are attached to the rafters of a pitched roof to give extra strength to the overall structure of a building.

Sarking and the building code of australia.