Cold Roof Construction Uk

Cncd 053 v1 5 7 2019 warm deck roof a warm deck roof is where the insulation is placed on top of the rafters joists and the roof covering is then placed over the insulation.

Cold roof construction uk.

When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof. This video shows the key features of a flat roof cold deck construction and how to draw the details to a scale of 1 10. Covers pitched roof materials basic pitched roof designs cold and warm pitched roofs and pitched roof construction. The majority of houses with pitched roofs will have what is now called a cold roof where insulation is laid on the floor of the loft area immediately above the ceiling of the upstairs rooms of the house.

Part 2 pitched roof construction. A cold roof design usually leaves a 50mm gap between the top of the insulation and the roof deck above. Well a cold roof is created by laying insulation between the rafters. Which makes sense as this space is otherwise empty and so it s a simple low impact way to insulate a roof.

Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings. Part 3 pitched roof detail. This allows air to circulate. As the insulation is not required to take any loads quilts and other loose fill materials can be used as well as rigid insulation.

Guidance advice on warm cold roofs www cncbuildingcontrol gov uk. With traditional cold pitched roof construction more insulation often means more interstitial and surface condensation too a danger that is aggravated by precipitation and wind. Although not recommended today and actually banned in scotland until recently cold flat roofs were fairly common. Tyvek and airguard membranes minimise interstitial and surface condensation in cold pitched roof construction while helping to ensure optimal energy efficiency.

Covers flat roof materials and flat. Cold roof a cold roof is roof in which the thermal insulation layer is located between the ceiling joists meaning that everything above the insulation such as the rafters and any roof space will be colder than the living space below it. Part 4 flat roof construction. Basically there are two options to choose from when insulating a flat roof.

Covers pitched roof detail.