Cold Pitched Roof Build Up

Cold roof designing buildings wiki share your construction industry knowledge.

Cold pitched roof build up.

In pitched roof construction thermal insulation can be placed horizontally at ceiling level cold roof. In this case we would suggest fitting kooltherm k7 pitched roof board between the rafters and kooltherm k118 insulated plasterboard to the inside face of the rafters. However cold roof insulation on an existing flat roof system is anything but simple. The construction build up for this can be seen on our online u value calculator.

Pitched or sloping roof. Cold pitched roof. Cold roof voids are typically required to be ventilated. There are three recognised designs of flat roof construction.

A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface. 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. A pitched or slanted roof has a terrain of at least 15 but it is often much more. The wooden rafters conduct heat much more than insulation which means you end up with something called thermal bridging.

Warm roof in a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building. Cold roof insulation is most commonly used when a flat roof is first being created because it s a relatively easy process. Warm cold and inverted. The breakdown warm roof vs cold roof.

Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof.