How long your aluminium windows will last depends on their quality. They should last 20 -30 years at least, but have been known to stay in good condition for up to 45 years. This is considerably longer than uPVC and wooden double glazing.
Etchingham
Etchingham (population 806) is a town and civil parish in the Rother district of East Sussex in southerly England. The town is located about 15 miles (24 kilometres) southeast of Royal Tunbridge Wells in Kent as well as 13 miles (21 km) northwest of Hastings, on the A265, half a mile west of its junction with the A21. Etchingham railway station gets on the Hastings Line to London Charing Cross and Cannon Street. Etchingham was an estate a long period of time prior to the Norman occupation of 1066; after this time the chateau was taken control of by the Normans. In 1166 it was delegated the de Achyngham (Etchingham) family members, who were popular landowners of the time. The Etchingham family members papers document that William was so happy with his right-hand man that he provided him the land now known as Etchingham. The moated manor house, long since knocked down, stood at the point now occupied by the London to Hastings train line. A few of the rock from the estate was probably used in the building and construction of the station structures. There is one tale that a wonderful bell lay at the bottom of the moat bordering the church as well as chateau, and that it would never be seen until six yoke of white oxen were brought to drag it up. Centuries have passed by, the moat is long gone and also no bell has actually surfaced. The 14th-century church was initially constructed within the premises of the chateau; proof of the moat can still be seen.