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Are your windows failing to keep the cold out during the winter months? It might be time to consider an upgrade.

The Window Sanctuary is the top-rated provider of premium timber sash windows in Sevenoaks and the surrounding areas. Our windows are expertly designed to reduce heating costs while adding a touch of elegance to your home. With our exceptional workmanship and attention to detail, you can trust us to deliver outstanding results every time.

Upgrade to Energy-Efficient Timber Windows for Superior Insulation and Comfort


Experience the warmth and charm of Victorian-era windows with modern insulation technology from The Window Sanctuary. Our sash windows are available in both classic Yorkshire Light horizontal and vertical styles, providing exceptional protection against the cold. Our treated timber resists moisture absorption, mold, and insects, making it the smart choice for your home.

Enhance Your Home with Stunning Timber Sash Windows.

Entertain in style with our range of elegant timber sash windows in Sevenoaks, Kent that create a wondrful indoor living space. Our timber sash windows offer an stylish and traditional look that complements your Sevenaoks home. 

Get a Free Consultation Today for Timber Sash Windows in Sevenoaks.

Transform your Sevenoaks home with our beautifully crafted timber sash windows. Schedule a free consultation at our showroom or call us at 01959 565343 to learn more.

Windows for Sevenoaks

Our timber sash window products will sympathetically replicate the original designs and can accommodate high-performance, slimline, sealed units to satisfy the requirements of your local Conservation Officer.

Energy saving performance

Our timber sash windows achieve an impressive 1.5 w/m2k overall U value and, when glazed with energy-saving thermafloat warm-edge sealed units, can achieve 1.1 w/m2k. Seals are of Q-Lon to ensure maximum draught-free surrounds and the ultra-tight lockable furniture is PAS 24-compliant. A wide choice of quality fittings are available in a range of complementary finishes.


A rigorous 5-stage process ensures that each of our products is protected and painted, and can withstand the elements with minimum maintenance.

Our method is:

Stage 1 – A chemical dip to minimise moisture absorption
Stage 2 – A chemical dip to protect against fungi, insect infestation, and mould growth
Stage 3 – Application of primer and undercoats using micro-porous products
Stage 4 – Spray finish first coat according to your colour choice
Stage 5 – Spray finish second coat

Micro-porous paints allow all timber fibres to be penetrated and to build up protection from within, unlike cellulose paints which form a skin on the outer face and require time-consuming treatments on a regular basis. To keep new products in pristine condition, we recommended a quick wipe down and a further coat be applied after approximately 7 years.


Our Google Reviews

  • Replaced front and side door plus a few windows, very happy with the quality, great sales experience and fitters were friendly. We had a small issue with the door which was quickly fixed

    Robert Francis Avatar Robert Francis
    February 9, 2020
  • We had our conservatory doors replaced with by-fold doors by The Window Sanctuary and are very pleased with the results . The company were very helpful and spent lots of time with us answering our questions before we actually placed our order. They were very efficient with the installation process and we would recommend them. Competitive price too.

    Royston Firman Avatar Royston Firman
    January 12, 2021
  • Great family company. Quality workmanship. Highly recommended.

    Mark Childs Avatar Mark Childs
    July 4, 2021
  • Delighted with the new windows that we just had fitted. They are top quality and look amazing. They were very professionally fitted, with great attention to detail. I thoroughly recommend them.

    Scott MacDonald Avatar Scott MacDonald
    November 27, 2020
  • From the start The Window Sanctuary were friendly and polite and a pleasure to deal with. They offered lots of advice, especially helpful as our installation was a little tricky. We also had lots of issues with our extension which caused delays our end, which The Window Sanctuary worked around, even though it meant the installation had to be carried out in two lots, when initially it was meant to happen in one go - they were very accommodating and patient, thank you! Would definitely recommend.

    Nicola Bandy Avatar Nicola Bandy
    January 2, 2022