Pitched Roof Target U Value

The tables below show the suggested u values in england wales and scotland.

Pitched roof target u value.

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. For replacement or refurbished roofs. There are a few good u value calculators online that if you are short on time are worth checking out. Improve your home insulation with our high quality insulation products.

Required area weighted average u value. The quick free and easy way to find out the insulation thickness and the u value you need for your building project. External walls cavity 0 55w m k external walls other not cavity 0 35w 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.

Where not exempt a conservatory heated or unheated should be built to the same maximum u values as any other new work as listed in columns b and c of the table in clause 6 2 9 with the exception that glazing and framing elements forming the walls or roof of a conservatory are unlimited in area and should have a maximum area weighted average u value of 2 0w m 2 k and a maximum individual element u value of 3 3w m 2 k. The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products. Ground floor no underfloor heating 0 45w m k. U value requirement roof 0 13 w m k.

Ground floor underfloor heating 0 15w m k. Passive performance built in cavity system. External doors windows rooflights curtain walling. U value requirement semi glazed doors 1 2 w m k.

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. That the floor is a suspended timber floor. Cold roof ceiling level 0 16w m k.

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 windows whole window u value 1 4 w m k. U values and air leakage levels determine space heating demand. Pitched roof sloping ceilings.

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. 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.