... when the sun falls, struggles to maintain the heat it has received from the suns rays particularly in the winter when days are much shorter. Louvres help improve insulation in buildings, and reduce heating and gas bills, doing their bit for the environment as you can close them when darkness falls. Louvres can be made of various materials, for example, metal, timber and even tinted glass. Timber is sustainable and generally the cheapest solution, however the downside to using timber is that it may begin to rot if it is not looked after, therefore I would select metal although it is normally more expensive, it would require less maintenance, and in the long run may be cheaper. Glass the third alternative is the most expensive and least common however the advantage this offers is that you can see out of it when it is closed as the tint emits light ...

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