2026

Few architectural features are as recognisably British as the sash window. Found everywhere from elegant Georgian townhouses to country cottages and Victorian terraces, sash windows have been shaping the character of Britain’s homes for over 300 years.   Despite changing fashions, modern materials, and the rise of uPVC, traditional timber sash windows continue to…

If you own a period property in Peterborough—whether Victorian, Edwardian, or Georgian—you already know that sash windows are a defining feature of your home’s character. But original timber sash windows require specialist care. That’s where NJS Sash Window comes in. Based locally and established in 2005, NJS Sash Window is a trusted name for…

If you own a period property in Peterborough—whether Victorian, Edwardian, or Georgian—you already know that sash windows are a defining feature of your home’s character. But original timber sash windows require specialist care. That’s where NJS Sash Window comes in. Based locally and established in 2005, NJS Sash Window is a trusted name for…

  Professional Sash Window Cord Replacement If your sash window has become difficult to open, slams shut, feels uneven, or the sash cord has snapped completely, it may be time for a professional cord replacement sash windows service. At NJS Sash Windows, we specialise in sash window cord replacement, restoring smooth operation while preserving…

  Professional Sash Window Spiral Balance Repair & Spring Replacement If your sash window is difficult to open, drops shut, will not stay open, or feels stiff and heavy, there is a good chance the sash window spiral balance system has failed or worn over time. At NJS Sash Windows, we specialise in sash…

Does your sash window refuse to stay open? Or does it slam shut with a bang? You likely have a broken spiral balance. At NJS Sash Windows (based in Etton, Peterborough), we repair more spiral balances than almost any other sash window problem. These clever mechanisms are common in late Victorian, Edwardian, and most…

Your local specialists in the repair, restoration, and care of wooden sash windows. Based in Etton, on the outskirts of Peterborough, NJS Sash Windows has been helping homeowners preserve the character and heritage of their properties since 2005 . We believe that original timber windows do not need to be replaced to perform beautifully.…

 If your timber windows are suffering from rot, soft wood, cracked sills or years of weather damage, window repair resin can often restore them without the cost and disruption of full replacement. At NJS Sash Windows, we specialise in traditional window repair resin techniques for sash windows, timber casements and period properties. Since 2005,…

If your sash windows are sticking, rattling, draughty or suffering from rotten timber, finding the right craftsman matters — especially in North London, where many homes are packed with original Georgian and Victorian features worth preserving. At NJS Sash Windows, we specialise in traditional sash window restoration, timber repairs, rotten sill replacement, draught proofing…