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The Window Sanctuary provides excellent timber sash windows in Tonbridge. Timber sash windows exude charm, capturing the magic of the Victorian era while providing a warm and comfortable living space free from draughts. If timber sash windows have caught your eye on homes around Tonbridge, then The Window Sanctuary is delighted to help you create this spectacular look for your home. The Window Sanctuary is Tonbridge’s local expert for timber sash windows.

At the Window Sanctuary, we provide two types of sash windows in Tonbridge that suit properties of all periods, including Edwardian, Victorian, or Georgian.

Our traditional sash windows are made of timber and are highly recommended as they offer 28mm double glazed units with the highest energy rating, providing thermal efficiency and compliance with recent building regulations.

Our products undergo a rigorous 5-stage process to ensure they are protected and long-lasting. They are painted with 3 coats of micro-porous paint, allowing them to withstand the elements with minimum maintenance for up to 10 years. With over 200 RAL colours to choose from, these windows complement and improve the overall look of your home.

Our traditional timber sash windows are designed with lead weights and ropes within the frames to counter-balance the weight of the sash. We replace all ropes and weights when we install new windows. Alternatively, we can install a spiral balanced hinge instead, allowing the windows to open and close without the use of ropes and weights. You can also specify bespoke window furniture such as Fitch fasteners or Board & Clasp fasteners.

For period properties with existing timber windows, we offer heritage sash windows that replicate the original designs and can accommodate high-performance, slimline, sealed units. Heritage sash windows are suitable for listed buildings or those in conservation areas and are designed with twelve individually glazed units. This option is much better than installing secondary-glazing, and we can assist with your planning application if required for a nominal fee.

Upgrade your sash windows in Tonbridge with the Window Sanctuary and enjoy the fresh character and warmth they will bring to your home.

Energy saving insulation

With our energy-efficient thermafloat warm-edge sealed units, our timber sash windows offer an exceptional overall U value of 1.5 w/m2k. By upgrading to the glazed version, you can enjoy an even lower U value of 1.1 w/m2k, keeping your home warm and reducing your heating costs. To ensure maximum protection from draughts, our seals are made from Q-Lon, and our lockable furniture is PAS 24-compliant. Choose from a wide variety of quality fittings available in 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.

Windows in Tonbridge conservation areas

Our timber sash windows will sympathetically replicate the original designs and can accommodate high-performance and satisfy the requirements of your local Conservation Officer.


Our Google Reviews

  • A great experience with these guys from beginning to end. We had 2 windows replaced and had them altered to larger sizes. Also had 2 doors replaced, one to a full size which meant taking out walls and sidelights. A messy job but the team came in and within 2 days it was out with the old ones, all rubble taken away, and new frames in. The second team then came in to install the glass and the bars and make good the walls inside and out to a fine finish. Couldn't fault it. Amazing work. Would and have recommended this company to everyone who has seen and admired our new windows and doors. A++++

    Judith Monk Avatar Judith Monk
    November 18, 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
  • Fantastic service and quality products I had my front door replaced by The Window Sanctuary and I am delighted with the results. The fitters were punctual and polite. The process was so quick & easy and any queries I had were dealt with very efficiently. I have no hesitation in recommending this company and will definitely use them again in the future.

    James Collins Avatar James Collins
    January 8, 2020
  • The team at The Window Sanctuary have been a delight to work with. They have given us really personal customer service, ensuring that every final detail works for us and our build and have listened to what is important to us (happy to be flex when we change our minds!). Quick to respond and offering a really consultative approach, alongside good value for high quality products, I would strongly recommend their service. I was really specific in what I wanted for bifold doors, wanting time achieve that much coveted Crittall appearance and they’ve made this work for us with a good quality option that doesn’t break the bank. What a find!

    Abigail Barclay Avatar Abigail Barclay
    January 20, 2021
  • One year ago we had our windows and doors installed. We are very happy with the product so far. What made me write a review one year later is their amazing customer service. Our door needed adjustment and I asked someone to look at it and fix it. They send an engineer the next day, who came on time and managed to fix it. Very pleased. As it is quite rare these days, companies cut corners and dont look after their clients.

    Lucy Niz Avatar Lucy Niz
    October 4, 2020