Sliding Sash Windows

In recent years there has been a revival of interest into timber sash windows. An awareness of the sustainability of timber and incorporating modern energy efficient technology into the traditional designs has meant timber sash windows are being used in new builds and also replaced in period properties. Townhouse, country mansion or cottage, sliding sash windows compliment any property of any period. At SJC Joinery we produce sliding sash windows using traditional lead weights, counterbalanced with spiral balances or mock sash – which is really a casement window designed to look like a sash window.



If you prefer, we can use cast iron weights. A suitable box is built into each side of the window, which houses the weights. This is then attached to a piece of sash cord, which travels over a pulley in the top corner of the window. We go to a great deal of trouble to ensure the balancing is perfect for smooth and effortless operation.



Modern spiral balanced systems have reduced the use of weights and pulleys and provide more robust and lasting structure to sash windows. Based on similar principles of counterbalancing but using two springs instead, spiral balances are of course visible on the inside of the window, but we colour match the finish to prevent them being too obvious, should you wish it.