Pitched Roof Insulation Over Rafters

In this section we ll be dealing only with insulation at rafter level and forming a warm roof construction.

Pitched roof insulation over rafters. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. Utilising a pitched roof as a usable living space is an effective way to maximise the square meterage of a residential development. Insulation positioned over rafters in a pitched roof is called a warm pitched roof.

Superfoil manufacture a wide range of products suitable for both under rafter and over rafter installation. An efficient room in a roof in a new build property where over rafter insulation is not desirable. 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. 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.

To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. The roof will typically be insulated above the rafter line creating what is most commonly known as a warm roof. This roof type will require a breathable membrane like kingspan nilvent to be. Superfoil makes pitched roof insulation a breeze with its easy and quick installation methods with no excessive measuring or cutting required.

It can run over the top of a horizontal ceiling or it can be placed at rafter level. Kingspan with a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same. From retrofit applications to new builds superfoil is the perfect insulation for your pitched roof project. 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.

Its versatility is the key to its popularity whether being used to achieve. An additional advantage is the excellent pressure and gas tightness of the entire system. Pitched roof insulation can be placed in two different locations. Wood fibre roof insulation is usually made up of two different products.