XO/PR on sloped roofs (ventilated, hybrid or warm) provides the most efficient U-values with minimal intrusion into valuable living space. The roof construction is a critical element in the building fabric and is an area at high risk of heat loss. Using XO/PR will reduce heat loss while also delivering excellent thermal bridging details.
Warm Roof Construction is a particularly effective way of insulating complex roofs. Insulating above – or above and between – the roof timbers ensures that the structure is kept at or near the internal environment conditions, reducing thermal stress and condensation risk. This product has a Euroclass C Fire Classification.
U-Value calculations to EN ISO:6946
XO/PR Insulation for Pitched Roof
Hybrid Roof
XtroLiner Thickness Between | XtroLiner Thickness Under | Rafter Centres 600mm | Rafter Centres 400mm |
---|---|---|---|
120mm | 25mm* | 0.16 | 0.17 |
120mm | 40mm* | 0.14 | 0.15 |
120mm | 60mm* | 0.12 | 0.13 |
*Insulation thickness only
U-Value calculations to EN ISO:6946
XO/PR Insulation for Pitched Roof
Warm Roof
XtroLiner Thickness Between | XtroLiner Thickness Over | Rafter Centres 600mm | Rafter Centres 400mm |
---|---|---|---|
N/A | 100mm | 0.18 | 0.18 |
N/A | 120mm | 0.16 | 0.16 |
75mm | 75mm | 0.14 | 0.14 |
75mm | 100mm | 0.14 | 0.12 |
Xtratherm reserves the right to change this information without notice.
Xtratherm accepts no responsibility for errors or omissions on the website.
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