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  • 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

Traditional Box Sash Windows

What Are Box Sash Windows?

These are the most traditional box sash windows with a weights system. It is our primary and most recommended product for those who desire simple construction yet great design.

Cords and weights are the traditional forms in which timber box sash windows operate. The mechanism works by counterbalancing the weight of the window with a lead (iron) bar attached to a chord that rolls over a pulley. This enables the sash window to slide up and down with relative ease. The system would be housed inside a box, built into the side of each window and hidden from view. Hence why they are called box sashes.

A significant advantage of these windows is that they provide efficient cooling of interiors during warm weather. Opening both the top and bottom of a sash window by equal amounts allows warm air at the top of the room to escape while letting in the cool air from outside into the room through the bottom opening.

Why choose Timber Box Sash Windows?

Our timber Box sash windows have been carefully designed to ensure that frames, meetings rails and glazing bars reproduce the traditional form as closely as possible. They are ideal for period properties and conservation areas. You can get the look of an authentic timber box sash with all the modern benefits. Timber-framed windows can contain double or triple glazed glass to ensure sound and heat insulation but offer that classic, heritage feel. Not only do they look beautiful, precision crafting and advanced technology mean that they’re highly energy-efficient, easy to operate, secure, rattle-free, and energy-efficient.

CHOOSE YOUR DESIGN

Design

CHOOSE YOUR GLAZING OPTIONS

Glazing

CHOOSE YOUR FURNITURE

Furniture

CHOOSE PAINT OR STAIN FINISH

Finish

Sash Renovation 31 mm

Sash Standard 4-12-4

Sash Standard Plus 4-16-4

Sash Excellent

Sash Renovation 31 mm

Sash Standard 4-12-4

Sash Standard Plus 4-16-4

Sash Excellent

Products

Sash Renovation 31 mm

Sash Standard 4-12-4

Sash Standard Plus 4-16-4

Sash Excellent

Technical Drawings

Sash Renovation 31 mm

Sash Standard 4-12-4

Sash Standard Plus 4-16-4

Sash Excellent

View Our Gallery

For more inspiration explore our window  and door galleries. Visit our window gallery »

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Get a FREE no-obligation Quote

You can schedule your free no-obligation quote by either filling in the contact form, emailing us or also 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.

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