Pitched Roof Target U Value

The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products.

Pitched roof target u value.

That the floor is a suspended timber floor. U value requirement opaque doors 1 0 w m k. We don t count the pitched roof as part of the house as we will insulate the floor of the loft. Improve your home insulation with our high quality insulation products.

Call us today visit our online store or contact us for assistance by email. New elements extension conversion for replaced or refurbished roofs. U value requirement windows whole window u value 1 4 w m k. For replacement or refurbished roofs.

Pitched roof sloping ceilings. U value requirement semi glazed doors 1 2 w 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. We assume that the occupants try to keep all the rooms at 20 c for 15 hours per day whilst the outside temperature is at zero 0 c.

Ground floor underfloor heating 0 15w m k. U values and air leakage levels determine space heating demand. 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. Passive performance built in cavity system.

The tables below show the suggested u values in england wales and scotland. External doors windows rooflights curtain walling. There are a few good u value calculators online that if you are short on time are worth checking out. External walls cavity 0 55w m k external walls other not cavity 0 35w m k.

Cold roof ceiling level 0 16w m k. U value requirement roof 0 13 w m k. The quick free and easy way to find out the insulation thickness and the u value you need for your building project. New elements extension conversion existing walls refurb new walls extensions new floors refurb existing floors extension ceiling level.

According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances. Required area weighted average u value. Ground floor no underfloor heating 0 45w m k.