Discover what sash windows are, how they work, average UK costs, and whether they’re draughty. Learn cleaning, painting, and opening tips in our expert guide.

How much do sash windows cost? The average cost of replacement of a sash window is £1,300, according to our survey of suppliers, with wood frames costing more and uPVC being cheaper.

The Siteline (C) clad wood double-hung sash kit from Jeld-Wen pack includes a lower and upper sash, finishing jamb liners and all other pieces needed to replace a window using the existing frame.

In this expert guide, we look at why sash windows cost more than regular windows and whether they are worth it, taking in analysis from an expert sash window fitter.