Repairing Sash Windows: Cost Versus Benefits

a worker repairing sash windows
(Image credit: Ventrolla)

Repairing sash windows is an intricate task. With the mechanism built into the frame itself, remedying the likes of snapped sash cords, broken panes and decaying frames means dismantling the frame — a task that many people prefer to leave to the professionals than to take on on a DIY basis. 

If you have original sash windows, this is unlikely to be your only concern. Traditionally single-glazed, restoration of sash windows to meet modern standards will require reconditioning of the frames and potentially secondary glazing to increase their U-values and avoid your home leaking heat from the windows. 

Hugh Metcalf

Hugh is editor of sister title and former digital editor of He has worked on a range of home, design and property magazines, including Grand Designs, Essential Kitchens, Bathrooms, Bedrooms and Good Homes. Hugh has developed a passion for modern architecture and green homes, and moonlights as an interior designer, having designed and managed projects ranging from single rooms to whole house renovations and large extensions. He's currently renovating his own Victorian terrace in Essex, DIYing as much of the work as possible. He's recently finished his kitchen renovation, which involved knocking through walls, and landscaping a courtyard garden, and is currently working on a bathroom renovation.