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Double Glazing Installed Properly by an Experienced Contractor Double glazing is a cost-effective option to reduce your energy bills and reduce draughts. But it is important to install them correctly by an experienced contractor. To fill in any gaps and provide insulation, expanding foam is applied around the frame. It is also important to consider the kind of expanding foam to be used. Preparation Double glazing is a great option for homeowners as it increases the efficiency of their homes. It mak