Warm Pitched Roof Build Up

There are three recognised designs of flat roof construction.

Warm pitched roof build up.

In pitched roof construction thermal insulation can be placed horizontally at ceiling level cold roof. A typical roof pitch in the uk for a traditional house will be 40 50 but at most it can go up to 70. Warm roof built up roof 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. In building construction roof pitch is a numerical measure of the steepness of a roof.

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. The insulation is immediately below the waterproofing layer. An architect makes the usual decision of the pitch. Warm roof build ups can be installed on most modern construction material types such as concrete timber and timber based sheets.

In areas of high snowfall then the roof pitch can be much greater to allow the snow to fall off the roof rather than settle and build up on the roof. In a warm pitched roof construction the thermal insulation is placed in the rafter line. Roofs with pitches of 10 to 20 are often called low pitched roofs and special considerations need to be made particularly on the overlap between tiles to avoid water being blown into the. Warm cold and inverted.

The below diagrams show different flat roof build ups. The idea behind a vapour control layer is to install it on the room side of the insulation so it blocks the passage of warm moist air rising into the pitched roof structure. Inclined along the line of rafters warm roof or positioned within the roof structure to form an insulated void room in roof which can result in warm and cold roof areas. However warm moist air by its very nature will always find the passage of least resistance so the use of roof membranes and ventilation will effectively manage the small.

They can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks. The vapour control layer is above the decking but. There are typically two different ways to insulate a roof a warm roof and a cold roof. As it avoids the need for aeration of the roof construction.