Warm Roof Space Insulation

If you can t install cold loft insulation because for example you re using your loft as a living space you will need to consider warm loft insulation.

Warm roof space insulation. Despite its name a cold roof does actually provide some insulation but it is named as such because the insulation is laid between the rafters. Follow the links below to learn about our roof insulation boards for each application or alternatively if you know the product you want then enter it in the search box below. The insulation can be adhered mechanically fixed or loose laid. A range of premium and high performance roof insulation solutions for pitched roofs.

A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building. You should leave the space under the roof tiles free from insulation to give adequate ventilation so that you don t get condensation or water coming through the tiles. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. For a warm roof solution you will need to install insulation in the plane of the roof pitch that is immediately below the sloping roof.

This means that the insulation is on the outside of the building envelope and the roof structure and ceiling space are at a similar temperature to the building interior. Because the warm roof method makes sure all of the roof structure is insulated it s a more energy efficient option over a cold roof. The insulation is installed under the roof in the slope. The vapour control layer is above the decking but below the insulation.

In warm climates zones 1 through 4 low density open cell spray foam insulation is the typical choice since it is vapor permeable and will allow drying of the exterior sheathing and roof framing if they happen to get wet via diffusion into the interior of the building. Warm loft insulation for pitched roofs. Warm loft insulation is used on pitched roofs where you are using the loft space as a room or for storage. A lot of empty space is found between.

The term cold roof refers to traditional roofs in which insulation is placed in the ceiling of the home so it is underneath the attic space which is not conditioned. Ventilated roofs remove moisture from roof cavities structural members sheathing and insulation. For a warm loft you install insulation directly under the roof in the plane of the roof s pitch slope. This over rafter insulation method also reduces thermal bridging giving an airtight continuous layer of high performance insulation and results in a well insulated attic space.

The insulation is immediately below the waterproofing layer.