Pitched Roof Sarking Insulation

What is roof sarking.

Pitched roof sarking insulation.

To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. 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. For pitched roofs below 20 degrees with a slate or tile covering the roof build up is the same as for the steeper pitches but all of the joints of the wood fibre sarking boards must be taped or sealed to prevent water penetrating the joints. Usually this construction is a ventilated roof which will have sarking felt.

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. 7 2 15 ventilation vapour control and insulation. 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. A house roof is a fairly complicated structure made up of joist battens trusses and the roof cover such as corrugated sheet metal.

Unilin offers sarking as solution for insulating your pitched roof. Ventilated roofs require a 50 mm air gap above the insulation. Aside from the structural components it is fitted with insulation and roof sarking. 7 2 14 underlay and sarking.

Unilin sarking boards are used to insulate a pitched roof from the outside. Roof sarking is an thin insulating membrane that helps protect the roof space from water and dust. Pitched roofs that have insulation at ceiling level should be ventilated to the outside air. 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.

Sarking and the building code of australia.