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The Therma-quilt insulation supplied as part of the Twin-ThermÂ® roof and wall cladding system is a non-hygroscopic glasswool whose individual fibres are coated with silicone to prevent moisture retention and maintain the thermal efficiency of the system.
Performance considerations. Cladding is typically made from wood, metal, plastic (vinyl), masonry or an increasing range of composite materials. It can be attached directly to the frame or to an intermediate layer of battens or spacers to prevent condensation and allow water vapour to escape.