The Universal Expander can be used to increase the insulation space of the rafters. The plywood web is fastened to the side of the rafters with the 60mm x 60mm battens extruding upwards. This allows any irregularities to be evened out and you can then continue with the proposed construction. Wood fibre Insulation Boards, roofing felt, or decking can all be fixed on top of the new rafters.
When used in conjunction with the FT Universal Pocket the whole face of the building can be changed as well as an improved insulation value. Wall realignment is also possible when used with the pockets.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Ecological Building Systems UK Ltd is consulted before specifying.
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