Why are your Bristol sash windows suddenly so heavy and stiff to open?
If your sash windows have become a struggle to lift, the cause is often hidden inside the box rather than on the surface. Broken or detached sash cords, worn pulleys and slipped or incorrect sash weights can all upset the balance that allows the sashes to glide smoothly. Paint build up where the sashes meet the frame can also glue timber together, especially after repeated repainting without careful preparation.
Moisture movement in old timber can cause swelling, distortion and rot, which tightens clearances and makes windows jam or scrape. Poorly fitted replacement staff or parting beads, or failed draught strips, can add extra friction and noise. A professional sash window specialist can diagnose whether the issue is mainly mechanical, due to timber movement or a mix of both, and then free the sashes, replace worn components and fine tune the fit so they open with minimal effort while retaining original character. Learn more
