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The underfloor insulation is designed to suit our timber floor. The insulation is concealed below the floor boards. The rigid insulation boards are suspended between the floor joists and above the ground. The top face of the insulation is just below the floorboards. The solidity of the floor is unaffected by this design. The internal appearance is also unchanged with only the attractive tongued and grooved boards visible inside. Detailed instructions are supplied. The floor insulation used is 25mm thick polystyrene which is certified by the British Board of Agrement.
After the standard 25mm thick underfloor insulation kit has been fitted, an extra 50mm thick layer of insulation is added above the floor joists. The kit includes sufficient additional timber floor joists to support the floor boards. The top face of the insulation is just below the floorboards. Detailed instructions are supplied. The finished floor level is 50mm or 2" higher than normal.