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.
Barmouth
Barmouth is a town and also area in the county of Gwynedd, north-western Wales, lying on the estuary of the River Mawddach as well as Cardigan Bay. Situated in the Historic county of Merionethshire, the Welsh form of the name is originated from "Aber" (estuary) and the river's name, "Mawddach". The English kind of the name is a corruption of the earlier Welsh form 'Abermawdd'. The town is served by Barmouth train station. The community grew around the shipbuilding market, as well as much more just recently as a seaside hotel. Noteworthy buildings include the middle ages Ty Gwyn tower house, the 19th century Ty Crwn roundhouse jail and St John's Church. William Wordsworth, a visitor to Barmouth in the 19th century, described it thus: "With a great sea sight in front, the mountains behind, the wonderful tidewater running eight miles [13 km] inland, as well as Cadair Idris within compass of a day's walk, Barmouth can always hold its own versus any type of competitor." Dinas Oleu (Citadel of Light), which lies east of the community on the adjacent hill, was the initial tract of land to be donated to the National Trust fund.