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.
Isle Of Barra
Barra is an island in the Outer Hebrides, Scotland, as well as the second southernmost lived in island there, after the nearby island of Vatersay to which it is connected by a brief embankment. The island is named for Saint Finbarr of Cork. In 2011, the population was 1,174. Gaelic is commonly spoken, and also at the 2011 Census, there were 761 Gaelic speakers (62% of the population). The Isle of Barra is approximately 60 km2 (23 sq mi) in area, 11 miles (18 km) long and 6 miles (10 km) wide. A single-track road, the A888, runs around the shore of the southerly part of the island adhering to the flattest land and also offering the many coastal negotiations. The interior of the island right here is uneven and unoccupied. The west as well as north of the island has white sandy beaches including sand developed from marine shells adjoining the grassed machair, while the south east side has countless rough inlets. To the north a sandy pensinsula runs to the beach airport terminal as well as Eoligarry.