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    Casement Window Repair & Restoration

    Casement Window Repair & Restoration

    Rotten, draughty, unsightly casement windows? Our restoration service is tailored for you.

    Casement window diagram - VentrollaIf you love the period charm and heritage innate in your wooden casement 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 sash & casement windows across the UK, you can trust Ventrolla.

    Dating back even further than the sash window to around the 16th century, the less complex casement window replaced simple unglazed openings. Manufacturing glass in large panes was still difficult and so it was common for many smaller pieces to be joined together with lead in attractive patterns. Prone to the same problems as sash windows, our restoration and draught proofing service is as effective.

    Also known as a side hung window or as some of our customers refer to it "the one that opens like a door".

    Why renovate your casement windows?

    • Add value to your home
    • Eliminate drafts and rattles
    • Lower your energy bills
    • Reduce outside noise
    • Enjoy easy to operate windows

    "Excellent work and it really has done the trick. No more rattles, stiff-to-open windows and above all, no more draughts."


    A casement window's performance is upgraded using the same principles used on sliding sash windows.

    Casement windows have the same inherent 3mm gap that sliding sash windows require to operate smoothly and can therefore suffer similar draught problems, unless they have a high-grade sealing system installed.

    Ventrolla’s two part process begins with the treatment and renovation of the casement window. The second part involves performance upgrading it by draught proofing the window using our unique Ventrolla Perimeter Sealing System. Using the same materials we use on sliding sash windows ensures the same high quality performance.

    The system is installed into either the frame of the casement window or the sash itself depending upon the construction of the casement window. If appropriate, the system can be installed into staff bead around the frame.

    The pile carrier is routed into the timber giving a permanent fixing point and making the system an integral part of the window. Our system can also be installed into sash windows and other timber windows and doors.

    Whether your project has sash or casement windows, Ventrolla’s system can improve the Window’s Energy Rating (WER) whilst retaining its original character.

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