The quick free and easy way to find out the insulation thickness and the u value you need for your building project.
100mm roof insulation u value.
Notes to the table above.
Specify your desired u value before immediately calculating the required insulation thickness and product selection.
These can be supported with a detailed report.
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The easiest way of getting a u value calculation is by using our free online u value calculator.
100mm xtratherm thin r is a foil faced polyisocyanurate pir insulation board formed by a blowing process which generates rigid foam composed of fine cells filled with pentane blowing agent trapped within the foam.
We provide u value calculations to show compliance with current building regulations standards and best practice.
For example a building with material with an r value of r 11 converts to an u value of 0 09 1 r or 1 11 0 09.
Use this tool to identify the u value of insulation you ll require for your walls floors or roof.
U value has an inverse relationship to r value.
The saint gobain insulation uk online u value calculator covers a variety of different insulation applications.
Ecotherm s u value calculator is simple free to use easy to tweak and provides an instant u value.
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Notes on the r value k values of different forms of asbestos.
For more information see our articles and how to videos below.
Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation.
With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.
Work through your own construction detail to get an early indication of the u value that this might achieve.
Easily identify what thickness of ecotherm insulation product you need to meet your project s u value requirements.
Long term performance is ensured by the foil facings which are gas tight.
The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products.
Use knauf insulation s free u value calculator.