Pitched Roof U Value

U value requirement roof 0 13 w m k.

Pitched roof u value.

A u value is a measure of heat loss in a building element such as a wall floor or roof. This means that the higher the u value the worse the thermal performance of the building envelope. According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances. These are expressed as a u value which needs to be achieved.

An uninsulated roof has a u value of approximately 2 5 w m2k however adding insulation can achieve a value of 0 18 w m2k. U value requirement windows whole window u value 1 4 w m k. Warm roof construction is a particularly effective way of insulating complex roofs. If your home was built pre 1967 and has an old attic room or loft conversion a great way of achieving this level of insulation is through our specially designed eco roof.

Insulating above or above and between the roof timbers ensures that the structure is kept at or near the internal environmental conditions reducing thermal stress and condensation risk. The required u value will depend on the location of the project england scotland or wales type of building domestic or non domestic and the application floor wall or roof. U value calculations to en iso 6946 xt pr insulation for pitched roofs. It can also be referred to as an overall heat transfer co efficient and measures how well parts of a building transfer heat.

U value requirement semi glazed doors 1 2 w m k. The tables below show the suggested u values in england wales and scotland.