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Superior performance polyisocyanurate (PIR) insulation for solid and suspended floors.

XO/UF superior performance PIR offers good insulation performance with a thermal conductivity of 0.021 W/m·K. The floor in any building is an area of considerable downward heat loss when not properly insulated.

XO/UF will significantly improve the U-value of new and existing floors. XO/UF is lightweight, easy to install and combines high compressive strength with low thermal conductivity, providing a high performance solution for floor insulation.

Standard product features


To BS EN 13165.

Board size:

2400 x 1200 mm.

Thermal conductivity (lambda value):

0.021 WmK.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-65/430 Polyisocyanurate (PIR) foam board

Product specification

An important note about specifying



Xtratherm UK Ltd


+44 (0)371 2221033

Product reference

XtroLiner XO/UF


[50 mm]
[60 mm]
[75 mm]
[80 mm]
[100 mm]
[120 mm]

Manufacturer details

Park Road,
Holmewood Enterprise Park,
Derbyshire, S42 5UY
Tel +44 (0)371 2221033
Fax +44 (0)371 2221044
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