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Double Glazed Window Installation Double glazing is an excellent addition to your home. It can provide thermal insulation, noise reduction and increased security. Double-glazing windows are not a DIY job. Choose a FENSA Approved Installer to reap the rewards of your investment. The installer will begin by building the frames, brickwork and new windows. Frame The frame of a double-glazed window is typically made of uPVC or timber, or aluminum. It is a frame that holds the glass panes. It al
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