Casement windows may be the standard modern window system today, but SashLine’s window units are far from ‘standard’. We manufacture and install bespoke casement windows to any dimensions in any of five woods, decorated to any RAL code colour or stained to perfection to bring out the true beauty of the natural wood.

The quality and timely delivery of our casement windows is assured due to our control of the entire supply chain, from our factory where the windows are manufactured and finished under strict quality control guidelines, to delivery on-site and installation by our professional FENSA regulated team.

Our windows conform to strict thermal standards and all our frames are storm sealed to prevent draughts.

So confident are we about the quality of our windows, and workmanship in installing them, that we proudly offer a multitude of warranties as standard – 15 years on the timber, 3 years on the wood stain, and 5 years on fitting, manufacturer defects, paint, rot and fungal infection, and ironmongery (for more information click here).

All our casement windows come painted white with laminated double glazing as standard, but there are numerous options to choose from to personalise your purchase whether you are buying for your home or a development you’re working on. Take a look at our customising options below.