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.
Dornoch
Dornoch is a town, seaside resort, and former royal burgh in the region of Sutherland in the Highlands of Scotland. It pushes the north shore of the Dornoch Firth, near to where it opens into the Moray Firth to the eastern. The town is within the Highland city government council area. The town is near the A9 road, to which it is linked by the A949 as well as the B9168. The town additionally has a turf air strip suitable for small aircraft and helicopters. Dornoch was a legislative burgh, incorporated with Dingwall, Kirkwall, Tain and also Wick in the Northern Burghs constituency of your home of Commons of the Parliament of Great Britain from 1708 to 1801 and also of the Parliament of the UK from 1801 to 1918. Cromarty was contributed to the listing in 1832. The constituency was an area of burghs understood likewise as Tain Burghs till 1832, and then as Wick Burghs. It was stood for by one Member of Parliament. In 1918 the constituency was abolished and the Dornoch element was merged into the then new region constituency of Caithness and Sutherland.