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Polyisocyanurate (PIR) insulation for sarking warm roof construction.

Using Thin-R Sarking XT/SK (T&G) on sloped roof areas can provide the most efficient U-values with minimal intrusion into valuable living space. Warm roof construction is a particularly effective way of insulating complex roofs.

Insulating above the roof timbers ensures that the structure is kept at, or near the internal environmental conditions, reducing thermal stress and condensation risk. XT/SK (T&G) is a robust tongue and groove engineered jointed board that achieves good U-values at minimal thicknesses.

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

Thin-R XT/SK


50 mm

75 mm

100 mm

125 mm

Standard product features


To BS EN 13165.

Board size:

2400 x 1200 mm.

Edge profile:

Tongue and groove.

Thermal conductivity (lambda value):

0.022 W/m·K.

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