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.
South Brent
South Brent (population 2,822) is a big town on the southern edge of Dartmoor, England, in the valley of the River Avon. The parish includes the small communities of Aish, Harbourneford, Lutton, Brent Mill, and several scattered farmhouses. It is five miles (8 kilometres) north-east of Ivybridge as well as 14 miles (22 kilometres) east-northeast of Plymouth. On the high moorlands are many hut circles, enclosures, and also barrows, all dating from the Bronze Age. The manor of Brent came from Buckfast Abbey from the moment of the structure of the abbey in the early 11th century. It was bought at the Dissolution by Sir William Petre, a big receiver of reclusive spoils in South Devon. South Brent was originally a woollen and market centre with two yearly fairs. Brent Hill is the high hillside simply outside the town where it takes its name (Old English brant-- high). On it are the damages of an old structure, supposed to have been a chapel, and of a windmill developed regarding 1790.