The Front Facing
Kingspan Kooltherm K8 Cavity Board is faced on both sides with a low emissivity composite foil facing which is highly resistant to the transmission of water vapour. This reflective, low emissivity surface effectively doubles the thermal resistance of the cavity in which the board is placed.

The Core
The core of Kingspan Kooltherm K8 Cavity Board is a premium performance CFC/HCFC–free rigid phenolic insulant of typical density 45 kg/m3.

The Reverse Face
The reverse facing of Kingspan Kooltherm K10 Soffit Board is a tissue based facing autohesively bonded to the insulation core during manufacture. The reverse facing used on Kingspan Kooltherm K10 Soffit Board has not been designed with the purpose of an aesthetic finish as its primary function.

If correctly applied, Kingspan Kooltherm K8 Cavity Board has an indefinite life. Its durability depends on the supporting structure and the conditions of its use.

The packaging of Kingspan Kooltherm K8 Cavity Board should not be considered adequate for long term outside protection. Ideally, boards should be stored inside a building. However, if outside storage cannot be avoided, the boards should be stacked clear of the ground, and covered with a polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.