Over time, double-glazed units will breakdown or start misting up. When manufactured, double-glazed units have a sealant applied to protect and seal the double glazing from ingress of water or moisture. Sealants have a moisture vapour transmission rate, which is the standard indicator of how easily moisture can permeate it. Exposure to water or moisture over time causes double glazing breakdown or misting. To avoid double glazing breakdown or misting, Trinity Glazing recommend our Double Glazed Units. Trinity Glazing supply and install Double Glazed Units throughout the Lothians and Edinburgh for commercial and domestic properties.