Energy Efficiency

Why Energy Rated Windows?

Our range of double and triple glazed units represents the next generation of high performance technology. We utilise a revolutionary high performance low-E glass, developed specifically for the particular needs of the UK. This enables us to get the highest Window Energy Rating, making our units some of the most energy efficient low-E units on the market.

Our A rated 28mm double glazed units offer up to three times more insulation than standard double glazed units, improving thermal insulation, increasing light transmittance, maximising solar gain, all of which will reduce your heating bills.

Our windows are measured using the Window Energy Rating scheme (WER), similar to the white goods in your home, with an “A” rating being the best. Our standard reinforced double glazed windows are A rated as standard, achieving an overall u value of 1.4 W/m2K (with a glass u value of 1.2 W/m2K). We are also able to offer a range of triple glazed windows which achieve an overall u value of 1.0 W/m2K (with a glass u value of 0.683 W/m2K). Other options are available on request.

How does it work?

Double glazed windows have two sheets of glass with a 20mm gas filled gap between them, this creates an insulating barrier that keeps heat in. Our triple glazed windows have three sheets of glass with either 12mm or 14mm gas filled cavities depending on the profile selected. At least one of the panes is made from a specially coated low-e glass, this has an unnoticeable coating of metal oxide which lets light and heat pass into the property but cuts the amount of heat that can get out.

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