A very popular product recently becoming popular is the Aluminium Window. The aluminium window is a direct shoot of from the achievements of the aluminium bifolding door. Why have a UPVc double glazed window which has thicker frames, ugly colours and is not as durable. The price is higher than the UPVc alternative but if your looking for a modern look which will add the most value to your home then the Aluminium window is something to look out for. The launch of an WER energy efficiency rated "A" Aluminium Window has recently been put into circulation which reaches the maximum energy efficiency possible.