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Are PVC-U Thermal Inserts used in all windows?

April 26, 2017pvc-u Thermal Used Windows

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Are PVC-U Thermal Inserts used in all windows?

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A. PVC-U Thermal Inserts can be used in all non structured windows. They have been tested for use in side hung casement sashes up to a maximum of 1500mm high and 750mm wide and a maximum of 1200mm high and 1350mm wide in top hung casements. This is a significant increase over the previous maximum possible without the use of traditional reinforcements. Thermal Inserts are not used for structural installations such as load bearing bays and conservatories.