Box Sash Windows
At Mumford & Wood, our timber Box Sash windows honour the classic design of the traditional vertical sliding window, also known as the double-hung sliding sash, while incorporating advanced technology for enhanced performance, longevity, and ease of maintenance.
Box Sash Features
Made to Measure
Multi-Layered Engineered Timber
Authentic Heritage Detailing
Traditional Cords, Weights, and Pulley System
Timber Box Sash Windows
Designed for Easy Maintenance and Lasting Performance
A favourite with architects, planning authorities and preservation societies, the Box Sash uses a traditional system of cords, weights, and heavy-duty ball-bearing pulleys and pre-stretched nylon cords. Distinctive deep moulded internal profiles are available in a variety of options with elegant glazing bars to match whichever style you choose.
Typically, a Box Sash window is set back into a 'rebated reveal' construction, with the box frame discreetly hidden behind external brickwork or stone. However, for properties that celebrate their heritage features, box frames can also be positioned proudly at the façade, complemented with a decorative architrave.
Available across all three of our product ranges, the Timber Box Sash window offers toughened glass, double and triple glazing, achieving PAS24 standards in new builds. For listed or heritage buildings, the opportunity to achieve the natural appearance of hand-blown, single glazing is also possible, in addition to hand-faced external putty and true bars, just as the originals would have been.
Box Sash Windows
A favourite with architects, planning authorities and preservation societies, the Box Sash uses a traditional system of cords, weights, and heavy-duty ball-bearing pulleys and pre-stretched nylon cords. Distinctive deep moulded internal profiles are available in a variety of options with elegant glazing bars to match whichever style you choose.
Timber Box Sash Windows
Ideal for a Wide Range of Properties
Our bespoke Box Sash windows are the perfect choice for all types of projects, including:
Who We Work With
Timber Box Sash Windows for Professionals
Backed by more than seven decades of specialist experience, we combine deep technical expertise and meticulous craftsmanship to create box sash windows that perform and endure.
Our team works closely with professionals at every stage of a project, providing clear and practical guidance through complex building regulations and ensuring that each solution meets the highest compliance and performance standards.
If you require further assistance, contact our team or visit our Resource Centre for detailed product specifications.
Developers
Bespoke box sash windows designed to meet the demands of new builds and multi-plot schemes.
Developers
Builders & Contractors
Reliable, high-quality box sash timber windows backed by technical support and clear specifications.
Builders & Contractors
Interior Designers
Beautifully crafted timber box sash windows that elevate interior spaces as well as exteriors.
Interior Designers
End Clients
Individually made timber box sash windows tailored to your home, style, and requirements.
End ClientsDevelopers
Bespoke box sash windows designed to meet the demands of new builds and multi-plot schemes.
Builders & Contractors
Reliable, high-quality box sash timber windows backed by technical support and clear specifications.
Interior Designers
Beautifully crafted timber box sash windows that elevate interior spaces as well as exteriors.
End Clients
Individually made timber box sash windows tailored to your home, style, and requirements.
Your Questions, Answered
Frequently Asked Questions
Here you'll find concise answers to common questions about our product range and services. If you can't find what you're looking for, our expert team is always here to help.
HIGHLIGHTED CASE STUDIES
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Start your journey with Mumford & Wood by requesting a no-obligation estimate from our expert team.
