Pitched Roof Insulation Over Rafters

An additional advantage is the excellent pressure and gas tightness of the entire system.

Pitched roof insulation over rafters. To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. From retrofit applications to new builds superfoil is the perfect insulation for your pitched roof project. Its versatility is the key to its popularity whether being used to achieve. Insulation positioned over rafters in a pitched roof is called a warm pitched roof.

In this section we ll be dealing only with insulation at rafter level and forming a warm roof construction. An efficient room in a roof in a new build property where over rafter insulation is not desirable. On new build or replacement pitched roofs the ideal build up would be insulation fitted over and then between the rafters giving a big boost for airtightness image credit. As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation.

It can run over the top of a horizontal ceiling or it can be placed at rafter level. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. When it comes to pitched roofs however adding a thick layer of insulation to the rafters can result in a depth of roof construction that may not suit every site meaning over rafter insulation sarking only is not a viable option. The weight of the tiles or slates is taken by the counter battens which are laid on top of the insulation a non structural element.

Pitched roof insulation can be placed in two different locations. Installation of over rafter double layer insulation on a pitched roof the assembly of two layers of insulation panels provides perfect protection against cold and heat. Utilising a pitched roof as a usable living space is an effective way to maximise the square meterage of a residential development. The roof will typically be insulated above the rafter line creating what is most commonly known as a warm roof.

Insulating a pitched roof above the rafters is the common method chosen for new builds and re roofing existing detached buildings as it provides superior thermal performance for the building. Wood fibre roof insulation is usually made up of two different products. Superfoil manufacture a wide range of products suitable for both under rafter and over rafter installation. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect.