Pitched Warm Roof Construction Details

A pitched or slanted roof has a terrain of at least 15 but it is often much more.

Pitched warm roof construction details. This is more of a traditional manner in regards to cutting the timber while onsite and building up the roof by the use of rafters ridge boards joists and purlins among others. Introduction to pitched roof details the roof is a key element of the building structure providing protection from the elements and has a vital role in reducing heat loss from the building. This means that the roof space is at close to outside air temperature. Cold and warm pitched roofs cold roof and warm roof difference.

Warm pitched roof construction when used in roofs tyvek and airguard membranes provide optimal protection of the thermal insulation and reduce the risk of interstitial condensation enhancing the energy efficiency of the building. Warm pitched roof a warm roof building will make the entire structure of the building warm in an attempt to avoid any cold bridging. An architect makes the usual decision of the pitch. A typical roof pitch in the uk for a traditional house will be 40 50 but at most it can go up to 70.

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. One pitched roof construction method is a cut roof method. It has s insulation layer above the rafters and immediately below its weatherproof membrane. Roofs tend to be either pitched or flat and typically in residential construction timber is the most common material used.

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. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. In a warm pitched roof construction the thermal insulation is placed in the rafter line. Alternatively it can be positioned between the rafters or partially between and below the rafter.

The battening and tiling is then fixed down over. 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 roof by the wind. The thickness of insulation will vary depending. Warm deck pitched roof the insulation is placed over the rafters and then a felt is placed on top.