In fact, it is been independently proven that B rated sash windows can save practically all the heat that would be lost through a traditional single glazed wooden sash.
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Luckily for buyers of the best windows in the industry, experience and technical ability is combined at the manufacturing stage to create windows which can last for as many as 50 – 70 years, if cared for properly by you, the lucky owner.
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People should be aware that plastic resin is made from non-renewable materials such as petroleum oil; the production of plastic also uses a high level of energy and further non-renewable fossil fuels.