- Heritage approved traditional appearance
- Wide choice of colour finish options
- An optional choice of horn detail and Georgian bars available to maintain a historic appearance
- Energy-efficient glazing
- Choice of cill sizes and Trickle vents available
- British standard approved
- Fully Guaranteed
Timber Box Sash Windows
(Cords & Weights Traditional Design)
What Are Box Sash Windows?
If you’re renovating a period property or replacing original sash windows, choosing the right system is essential. Cords and weights sash windows represent the original and most traditional sash window system. Unlike modern alternatives, this design uses a concealed counterbalance mechanism within the frame. As a result, the weights perfectly offset the sash, allowing it to open and close smoothly while holding its position securely.
Although the design remains traditional, the performance meets modern standards. With double or triple glazing options available, our timber sash windows offer improved thermal efficiency. This helps to reduce heat loss, improve comfort, and lower energy bills over time.
Our timber box sash windows are a popular choice for listed buildings, conservation areas, and Victorian, Georgian, and Edwardian homes. They are carefully designed to match original detailing while meeting current building regulations, making them ideal for both replacement projects and new installations.
If you’re considering replacing your sash windows, we can help you choose the most suitable option for your property and ensure it’s done correctly from the start.
We supply timber box sash windows across the UK, including England, Scotland, and Wales. In addition, we offer professional installation services throughout London, Buckinghamshire, Hertfordshire, Kent, Surrey, and surrounding areas within the M25. Our team has extensive experience supplying and installing timber sash windows, working on both private homes and conservation projects. If you’re considering replacing your sash windows, we’re happy to advise on the best solution for your property.
draught-proof
water-proof
cold-proof
noise-proof
max security
Why choose Timber Box Sash Windows?
Carefully designed frames, meeting rails, and glazing bars ensure that our timber box sash windows with cords and weights reproduce traditional forms as closely as possible while delivering modern performance and energy efficiency. These items are ideal for period properties, listed buildings, conservation areas, and character homes.
Every window is made to measure, ensuring a precise fit for your property. Whether you are replicating existing designs or creating something new, we can tailor each detail to suit your home’s architectural style.
Beyond appearance, the cords and weights mechanism provides smooth, reliable operation and is designed to last — making it a long-term solution rather than a short-term replacement.
Sash Renovation 31 mm
Sash Standard Plus
Sash WPL 146
Sash Excellent
Sash Renovation 31 mm
Sash Standard Plus
Sash WPL 146
Sash Excellent
Products
Sash Renovation 31 mm
Sash Standard Plus
Sash WPL 146
Sash Excellent
Technical Drawings
Sash Renovation 31 mm
Sash Standard Plus
Sash WPL 146
Sash Excellent
Frequently Asked Questions
What are cords and weights sash windows?
They are a traditional sash window system that uses a hidden counterbalance mechanism with weights and cords to allow smooth vertical movement of the sash.
Are timber sash windows energy efficient?
Yes. Modern timber sash windows can achieve excellent thermal performance with double or triple glazing while maintaining a traditional appearance.
Are they suitable for conservation areas and listed buildings?
In many cases, yes. Because they replicate original designs, cords and weights sash windows are often required in conservation areas. However, you must confirm with your local conservation officer whether our profiles suit your specific project requirements.
Do they require a lot of maintenance?
With modern finishes and proper care, timber sash windows require minimal maintenance and can last for decades.
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Get a FREE no-obligation online Quote
You can schedule your free no-obligation quote by either filling in the contact form, emailing us or making a call. If you have any queries and would like to discuss your exact requirements, we will be happy to help. Please note that a site visit without an initial quote is not free of charge. A deposit is applicable, but it’s refunded after you place the order.
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Our friendly and professional sales team are here to answer your questions.
telephone
01322 332237
or email
info@ranebrook.co.uk
We operate a nationwide service and will never turn down enquiries from the whole of the UK. But as our office is located in South East London, we attract enquiries from surrounding areas, where we not just supply but also install our traditional box sash windows (London, Kent, Sussex, Surrey, Essex, etc.).
If you’re looking for some standard sizes of Box Sash windows, check our store, and maybe you’ll find what you need.
