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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.
An EPDM roof is typically installed over a special recovery board depending on the application A rigid insulation board called âISO boardâ is also used. ISO board has insulating properties of R-5.6 to 8 per inch. There is an ISO Tapered insulation board so that areas where water tends to gather can be eliminated.