Traditional Timber Sash Windows for Windsor, SL4

Installation, Replacement & Upgrade Specialists

NOT IN WINDSOR? We also serve Datchet, Water Oakley, Eton Wick, Oakley Green, Stoke Green, Middle Green, Old Windsor & more.

What Do We Do?

• Manufacture, fitting/installation & replacement of traditional wooden sash windows,
• Replacement & upgrade of sash windows, boxes and sashes,
• Double glazing, energy efficient & other glass options,
• Bespoke styling, paint colour, furniture, security & timber options.

Why Use Us?

• Workshop, showroom and offices based nearby in Surrey,
• Specialists in traditional wooden sash windows,
• Bespoke windows and doors built to YOUR specifications,
• No quibble after-sales service – 100% satisfaction guarantee,
• It’s all us! Manufacturing, fitting, and support – no outsourced work.

About Our Sash & Casement Windows

Our custom sash windows and casement windows include a number of options for the customer including double-glazing, mouldings, window furniture and more. We also repair and restore sash windows in Windsor, Berkshire. Also serving surrounding towns and villages including Windsor, Datchet, Water Oakley, Eton Wick, Old Windsor and beyond.

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A little about our service area…

Windsor is, without question, one of the most architecturally significant towns in England. As a Royal Borough with a continuous inhabited history stretching back over a thousand years, its streetscape is defined by centuries of accumulated building: from medieval timber frames to Georgian terraces, Victorian villas, and Edwardian semis, with sash windows woven into that fabric at almost every turn.

For homeowners in Windsor, that heritage is something to be genuinely proud of. It also comes with responsibilities. A substantial proportion of Windsor’s residential and commercial properties either fall within a designated conservation area or carry listed building status, meaning any window replacement or alteration must be handled with care, with the appropriate expertise, and in many cases with prior consent from the Royal Borough of Windsor and Maidenhead. (See our complete guide to sash windows in conservation areas)

That’s precisely where we come in.

Sash windows and Windsor’s built heritage

The sliding sash window became the defining feature of British domestic architecture from the late 17th century onwards, and Windsor offers some of the finest examples in the country. Walk along Sheet Street, along the cobbled stretches near the castle, or through the quieter residential streets of Clewer and Dedworth, and you’ll find original box-frame sash windows, some of them original to the Georgian period, still doing their job in properties that have stood for two centuries or more.

These windows aren’t decorative afterthoughts. They are an integral part of the building’s structural and visual identity, and in many cases, their proportions, glazing bar profiles and joinery details are specifically cited in conservation area appraisals and listed building descriptions. Replacing them with something inappropriate, or, worse, with uPVC, isn’t simply an aesthetic misstep. In a conservation area or listed building context, it can be a breach of planning conditions.

We manufacture and install traditional timber sliding sash windows to bespoke specifications, matching original profiles with precision. If you’re in Windsor and your property is in a conservation area or is listed, we understand both the craft requirements and the planning framework. We can advise you on what’s achievable, what’s appropriate, and what will satisfy your local planning authority.

Why Windsor properties need specialist attention

Older sash windows in Windsor, particularly those in Victorian and Edwardian terraces, were built to last, and many of them still can, given the right attention. Draught, rattle, stuck sashes and failed cords are common complaints, but they’re rarely a reason to replace a window that still has decades of life left in it. Our restoration and renovation service is designed to address exactly these problems: re-cording, re-glazing, re-beading and repainting, combined with draught-proofing where needed, can transform a tired original window into something that performs as well as a new installation.

Where replacement is the right course of action, through irreparable deterioration, previous poor repairs, or the desire to upgrade to double glazing, we manufacture replacement sash windows in our Surrey workshop to match what was there before. Glazing bar profiles, meeting rail dimensions, stile widths, ovolo or lamb’s tongue mouldings: we match the details that matter so that the finished result sits naturally within the building, rather than announcing itself as a modern insertion.

Conservation areas and listed buildings in Windsor

The Royal Borough of Windsor and Maidenhead has a number of designated conservation areas, including the Windsor Town Centre Conservation Area, which encompasses a significant swathe of the historic core. Properties within these areas are subject to restrictions on permitted development, meaning that like-for-like replacement of existing windows, particularly with uPVC or aluminium, may require planning permission or be refused outright.

For listed buildings, the requirements are even more stringent. Listed Building Consent is required for any alteration that would affect the character of the building, including window replacement. Timber sliding sash windows that accurately reproduce the original design are generally the accepted solution for listed properties, and in many cases, English Heritage guidance (now Historic England) will specifically require slim-profile double glazing over single glazing if energy performance is being addressed.

We have extensive experience working in and around Windsor’s conservation areas and with listed buildings throughout Berkshire and Surrey. We’re accustomed to working collaboratively with planning officers and heritage consultants when required, and our manufacturing capability enables us to produce windows that meet both the aesthetic requirements of heritage authorities and the thermal performance requirements of modern building regulations.

Double glazing in heritage properties

One of the most common questions we receive from Windsor homeowners, particularly those in older properties, is whether double glazing is possible within a traditional sash frame. The short answer is yes, in most cases. We offer slim-profile double-glazed sash window units that provide improved thermal and acoustic performance while maintaining the visual proportions of your original window. In many conservation areas and listed building contexts, these units are an acceptable solution where single-pane replacement glass would not achieve building regulation compliance.

We’ll always advise honestly on what’s achievable for your specific property and circumstances. If a proposed approach is unlikely to receive planning approval, we’ll tell you before you’ve committed to anything.

Working in Windsor and the surrounding area

Alongside Windsor itself, we regularly work in Eton, Old Windsor, Clewer Village, Datchet, Water Oakley and the wider surrounding area. Many of these communities share Windsor’s heritage character and carry similar conservation designations – Eton in particular has a high density of listed buildings along its historic High Street and the streets behind it.

If you own a period property in Windsor or the surrounding villages and you’re thinking about your sash windows, whether that’s repair, restoration, draught-proofing or full replacement, we’d be glad to come and take a look. Our advice is free and without obligation, and we’ll give you a straight assessment of what your windows need and the best route forward for your home.

Call us on 0800 389 7384 or complete the quote request form on this page to arrange a visit.