Pitched Roof Target U Value

An advanced warm roof system of xtroliner sarking insulation that delivers the passive u value target of 0 15 w m k in a single layer avoiding thermal bridging and allowing for more effective membrane detailing.

Pitched roof target u value.

External doors windows rooflights curtain walling. Cold roof ceiling level 0 16w m k. According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances. We don t count the pitched roof as part of the house as we will insulate the floor of the loft.

Pitched roof sloping ceilings. Ground floor underfloor heating 0 15w m k. Pitched roof with insulation between ceiling joists or between rafters determine the thickness of the insulation layer required to achieve a u value of 0 21 w m2k if insulation is between the joists and 0 26 w m2k if insulation is between the rafters. The tables below show the suggested u values in england wales and scotland.

There are a few good u value calculators online that if you are short on time are worth checking out. New elements extension conversion existing walls refurb new walls extensions new floors refurb existing floors extension ceiling level. That the floor is a suspended timber floor. For replacement or refurbished roofs.

Call us today visit our online store or contact us for assistance by email. U value requirement semi glazed doors 1 2 w m k. Passive performance built in cavity system. Ground floor no underfloor heating 0 45w m k.

The quick free and easy way to find out the insulation thickness and the u value you need for your building project. The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products. 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. External walls cavity 0 55w m k external walls other not cavity 0 35w m k.

U value requirement roof 0 13 w m k. U values and air leakage levels determine space heating demand. New elements extension conversion for replaced or refurbished roofs. Improve your home insulation with our high quality insulation products.

U value requirement windows whole window u value 1 4 w m k. These are expressed as a u value which needs to be achieved. Required area weighted average u value.