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Transform your home into a stunning tribute to the historic Victorian era with expertly crafted timber sash windows.

The Window Sanctuary is your go-to source for top-quality sash windows in Kent, including Westerham. Our skilled team delivers exceptional workmanship for superior protection and enjoyment of your home. With this traditional window style, you can elevate the appearance of your home while enjoying high energy efficiency standards and optimal insulation against winter draughts. Stay comfortable and warm all year round with our exquisite sash windows.

Enhance the charm of your home in Westerham with beautifully crafted traditional timber sash windows that exude history and elegance.


The Window Sanctuary specializes in designing bespoke timber sash windows to complement your Westerham home, creating a stunning visual effect and offering better insulation and security.

Experience a free consultation on traditional timber sash windows in your own home in Westerham, Kent with one of the The Window Sanctuary’s experinced advisors.

We will install beautiful timber sash windows that present a visual impact, and add a sense of elegance to your home.


Contact us today at 01959 565343 or visit our showroom to learn more.

Energy saving performance

Our timber sash windows are highly energy efficient with an impressive overall U value of 1.5 w/m2k. When paired with energy-saving thermafloat warm-edge sealed units, they can achieve an outstanding U value of 1.1 w/m2k. Our windows feature Q-Lon seals to provide maximum protection against draughts, and the ultra-tight lockable furniture is PAS 24-compliant. We offer a wide selection of high-quality fittings in various finishes that complement our windows.


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 for conservation areas

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.

 we install TIMBER SASH WINDOWS in westerham

Our Google Reviews

  • If you've ever built a house you'll appreciate how hit and miss glass contractors can be, but The Window Sanctuary stand out as reliable, good quality and easy to deal with. The guys turned up on time, worked really hard and did a fantastic job. I wouldn't hesitate to recommend this company.

    Rebecca Stiasny Avatar Rebecca Stiasny
    February 24, 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
  • Great customer service. Good quality product. We needed a door adjustment and they have sent someone the next day.

    Lucy NNN Avatar Lucy NNN
    March 3, 2021
  • The Window Sanctuary replaced all my old Crittal Windows with slimline heritage aluminium windows to retain the period look of my grade 2 listed property and furthermore replaced the old rotten timber sash windows with new hardwood timber sash windows bringing the property back to life. The guys were hardworking very knowledgeable and very professional I wouldn’t hesitate to recommend this firm highly enough Warm regards Fraser Owen

    Fraser Owen Avatar Fraser Owen
    April 4, 2022
  • The team did a great job installing new sash windows in our flat: the wood grain effect on their PVC looks great, they took away our old windows and worked swiftly, on time and on budget to get the new ones fitted. I can definitely recommend them! Thanks!

    Claire C Avatar Claire C
    February 24, 2020