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.
Dulverton
Dulverton is a small town as well as civil parish in the heart of West Somerset, England, near the border with Devon. The community has a population of 1,408. The parish includes the districts of Battleton as well as Ashwick which lies about 3.5 miles (5.6 km) north west of Dulverton. To the west of the community exists Ashwick House, built in the Edwardian style in 1901. Also nearby is the estate of Northmoor, previously a seat of Sir Frederick Wills,1 st Baronet of Northmoor, among the 4 Wills Baronetcys, and the owners of the Imperial Tobacco Company. In 1929 Sir Frederick's kid & beneficiary, Sir Gilbert Wills, second Baronet, was elevated to the peerage as Baron Dulverton, whose principal seat was at Batsford Park, near Batsford, Gloucestershire. Dulverton is a prominent vacationer location for exploring Exmoor, as well as is residence to the Exmoor National Park Authority head office. The community rests on the route of the Exe Valley Way and Land's End Trail.