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XtroLiner XO/CW (T&G)

XO/CW T&G is an innovative partial fill wall insulation system incorporating robust facings, engineered jointing details, performed corners and a certified lambda of 0.021 W/mK.

This lower lambda improves U-Values and meets Zero Carbon standards, proving an excellent choice for passive and low energy builds. XO/CW (T&G) partial fill can achieve a passive U-Value of 0.15 W/m2K in a traditional cavity wall. Using XO/CW allows the residual cavity to be maintained, offering excellent protection against wind driven rain.

General information
Specification data - Polyisocyanurate (PIR) foam insulation
Product Reference

XtroLiner XO/CW (T&G)


50 mm

60 mm

75 mm

80 mm

100 mm

Standard product features


To BS EN 13165.

Board size:

1200 x 450 mm.

Thermal conductivity (lambda value):

0.021 WmK.


Xtratherm PIR achieves an A+ rating under the BRE Green Guide.

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