Double Glazing

Double / Triple Glazed Units

Double glazed units comprise of two panes of glass with a vacuum between them. The trapped air creates insulation that prevents heat loss or gain through the glass due to the air temperature being unable to penetrate the vacuum.
Triple glazed units have three panes of glass instead of two. By having a third pane you will increase efficiency and reduce noise.

'Heritage' Double Glazing Units

Due to current regulations set in place by local authorities, councils and conservation departments, Westend Glass now manufacture and supply ‘heritage’ double glazed units. These units are designed for use in the restoration of existing windows, which currently have single glass installed and where a requirement for double glazing has been identified. These units offer a sightline of 7mm and an overall unit width of 12mm. Using low-e glass, warm edge spacer and a gas filled cavity enhances the overall thermal performance of the unit..

Energy Efficient Double Glazing Units

All properties lose heat through their windows, but energy efficient glazing keeps your home warmer.
Double glazed units have two sheets of glass with a gap in between to create an insulating barrier that keeps heat in. Standard units are constructed with an aluminium spacer bar, however aluminium is highly conductive and also has an exceptionally high thermal energy loss.
Comparatively double glazed units manufactured with warm edge spacer bar have a warmer internal edge temperature, which helps to improve the thermal efficiency of the glass and reduces the risk of condensation. The most energy efficient glass for double glazing is low emissivity (Low-E) glass. This often has an invisible coating of metal oxide, normally on one of the internal panes. This lets in light and heat but reduces the amount of heat that can escape. To achieve a more efficient unit, gases such as argon or krypton should be used in the gap between the panes of glass.

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