Skip to main content

Free, No Obligation
Survey & Quote

    Sash Windows Repair & Restoration

    Sash Windows Repair & Restoration

    Rotten, draughty, hard to operate sliding windows? We can help.

    If you love the period charm and heritage innate in your wooden sliding sash windows but hate the draughts, rattles, rot and heat loss that can also be part and parcel with an older property then you need help from the experts. With over 30 years’ experience repairing windows across the UK, you can trust Ventrolla.

    Sash Window Diagram - VentrollaTraditional timber sash windows are an essential feature of a period buildings character. Therefore it is vital to retain them, not only because of the aesthetic appeal, but because they add value to your property. Also known as a sliding sash or vertical sliders, they rely on a weighted system that allows the heavy sashes to lift and fall with ease. In order for the sashes to move in the box and operate smoothly there is a 3mm gap between the sash and the frame which is often the cause of draughts, rattles, dust and rain ingress and heat loss. 

    Dating back over 300 years sash windows as we recognise them today have steadily evolved as technology and fashion have changed. At one time, due to a punitive window tax, the size of your panes was seen as an indicator of your wealth and interestingly the design was influenced by the Great Fire of London when post fire legislation required the windows to be recessed in to the brick work.


    "From day one we were contacted by administration regularly to keep us informed and when the windows were fitted the team were friendly, courteous and thoroughly professional. We are more than happy with the finished results, we now have beautifully crafted windows which are appropriate to the period our home."


    Benefits of a Ventrolla Sash Window Repair:

    Our service focuses firstly on window repair and secondly on upgrading their performance.


    What happens during the renovation process?

    • Windows are carefully removed from the window frame.
    • Any decaying timber in the units, frame or sill is routed out to expose the “sound” timber.
    • Occasionally, new timber is spliced in or replaced where the existing timber is beyond repair.
    • Our unique epoxy resin, VR90, is used to fill the cavities and is moulded to match the existing profile of the timber.
    • Sash cords are replaced, pulleys serviced and the sashes correctly balanced to ensure smooth operation of the windows.

    The windows are then upgraded by fitting the Ventrolla Perimeter Sealing System, which virtually eliminates draughts and rattles. At the same time, the Ventrolla Sash Removal System can also be fitted to ease future painting, cleaning and maintenance.

    We also work on casement windows and other timber windows and doors. Such diversification and decades of experience have made us the UK’s leading period window specialists.

    For more than 30 years, we have worked on period homes, listed buildings and properties within conservation areas, restoring and upgrading sash windows, casement windows and doors.

    Our projects range from small domestic houses to large commercial projects. However diverse the scale of our activities may be, Ventrolla’s principles have never changed – restoring the original beauty of your sash windows, while improving their performance.

    Note: We prime any exposed timber with our Acrylic Primer that conforms to BS 7956-2000. The "After" window above has been decorated by a professional - this is not part of the Ventrolla service.

    Ventrolla Sash Windows Repair and RestorationVentrolla Sash Windows Repair and RestorationVentrolla Sash Windows Repair and RestorationVentrolla Sash Windows Repair and RestorationVentrolla Sash Windows Repair and RestorationVentrolla Sash Windows Repair and Restoration