Roof - Loft Space (un-occupied) - Timber - Input Required  help

Joist width

Joist depth

Joist centres

Insulation between joists

You can either select an insulation or enter the
target U-value you want to achieve below...

Insulation over joists  Isover Spacesaver 100mmIsover Spacesaver 150mmIsover Spacesaver 170mmIsover Spacesaver 200mmIsover Spacesaver 300mm (2x150mm)Isover Spacesaver 340mm (2x170mm)Isover Spacesaver 400mm (2x200mm)Isover Spacesaver Plus 100mmIsover Spacesaver Plus 150mmIsover Spacesaver Plus 200mmIsover Spacesaver Plus 300mm (2x150mm)Isover Spacesaver Plus 400mm (2x200mm)

or Target U-value   W/m²k