Pitched Roof Target U Value

Cold roof ceiling level 0 16w m k.

Pitched roof target u value.

Call us today visit our online store or contact us for assistance by email. 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. Required area weighted average u value.

We don t count the pitched roof as part of the house as we will insulate the floor of the loft. U values and air leakage levels determine space heating demand. 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. U value requirement semi glazed doors 1 2 w m k.

External walls cavity 0 55w m k external walls other not cavity 0 35w m k. 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. External doors windows rooflights curtain walling. Ground floor underfloor heating 0 15w m k.

For replacement or refurbished roofs. 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 requirement windows whole window u value 1 4 w m k. The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products.

New elements extension conversion for replaced or refurbished roofs. There are a few good u value calculators online that if you are short on time are worth checking out. These are expressed as a u value which needs to be achieved. 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. Passive performance built in cavity system. That the floor is a suspended timber floor. Improve your home insulation with our high quality insulation products.

U value requirement roof 0 13 w m k. Ground floor no underfloor heating 0 45w m k. According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances.