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.
Berriedale
Berriedale is a small estate town on the north east coast of Caithness, Scotland, on the A9 road between Helmsdale and also Lybster, near to the limit in between Caithness and also Sutherland. It is protected from the North Sea. The village has a parish church in the Church of Scotland. Just southern of Berriedale, heading to the north, the A9 passes the Berriedale Braes, a high drop in the landscape (brae is a Scots word for hill, a loaning of the Scottish Gaelic bràighe). The roadway falls considerably (13% over 1,3 kilometres) to bridge a river, prior to increasing again (13% over 1,3 kilometres), with a variety of sharp bends in the road-- although some of the hairpin bends and also various other neighboring gradients have actually been reduced in recent years. The impracticality (and expense) of connecting the Berriedale Braes avoided the building of the Inverness-Wick Far North Line along the east coastline of Caithness; rather the train runs inland via the Flow Country. Berriedale lies at the end of the eighth phase of the coastal John o' Groats Trail.