The Radiator in Reverse
Old double glazing panels feel freezing to the touch during winter.
Homeowners immediately blame the frame seals or assume the internal gas escaped. The glass units are often physically intact and sealed tight. Look closely at the gap separating the two panes of glass. A bright silver metal strip running around the internal edge indicates obsolete, heat-leaking technology.
The Aluminium Thermal Bridge
Aluminium conducts heat and cold with massive efficiency.
Old double-glazed units rely on these raw metal bars to separate the glass sheets. The metal strip acts as a direct thermal bridge. It sucks expensive heat straight out of the room and transfers it to the outside world. Simultaneously, it pulls freezing exterior temperatures indoors, turning the edge of your window into a refrigeration zone.
Warm Edge Technology
Modern A-rated glass units replace raw aluminium with an insulated barrier.
These advanced systems use a non-conductive plastic composite or structural foam core. Upgrading to a warm edge spacer bar double glazing setup blocks the transfer of temperature across the window unit completely. This material change keeps the internal pane of glass near room temperature, reducing heating bills instantly.
Spotting the Difference
Look at the spacer bar colour to judge the thermal efficiency of a window.
Aluminium strips are silver, highly reflective, and joined with ugly corner staples. Modern warm edge spacers feature a seamless, matte black or deep grey finish. This switch stops the cold perimeter zone from forming, preventing the pooling condensation that regularly rots internal window boards.
Trade Counter Upgrades
Stop wasting money heating the Dorset air through old metal spacers.
Drop by 78 Alma Road to see the physical thermal difference between old metal strips and modern insulated spacers. Our trade counter team can arrange to swap your cold glass units while keeping your existing frames intact. Call us on 01202 533126 for a direct price.
