Heritage Windows, Doors & Garden Rooms in Marlborough
Marlborough is famous for having one of the widest high streets in the UK, but living in such a historic market town comes with a responsibility to preserve its character. At KJM Group, we provide high-performance triple glazing and secure composite doors designed to respect the unique architecture of the town and surrounding villages.
Whether you need to replace draughty windows in a Ramsbury cottage with heritage flush sash, or you want a modern tiled garden room to enjoy views of the Savernake Forest, we offer the perfect balance of style and substance. Plus, with our No Pressure Promise, you get honest advice and a fair price without the hard sell.
Why Marlborough Chooses KJM Group
KJM Group has been serving Marlborough and the surrounding Wiltshire villages since 1983. We understand that Marlborough is unique. The strict Conservation Area along the High Street, combined with the mix of timber-framed and brick properties, means your windows need to be both aesthetically perfect and incredibly durable.
We specialise in Timber Alternative systems that satisfy Wiltshire Council planners, providing the charm of wood without the warping or rotting often seen in original properties near the River Kennet.
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Key Takeaways for Marlborough Homes
- Double & Triple Glazing: A-rated glass for maximum thermal efficiency.
- Composite Doors: Solid core security for your peace of mind.
- Planning Handled: We manage all "material change" permissions for you.
- Local Integrity: Honest advice and a No Pressure Promise.
Heritage Double Glazing: Timber Looks, Modern Tech
For the cottages of Ramsbury or the Georgian facades of Marlborough High Street, maintaining the "flush" sightline is non-negotiable. We install the market-leading Residence Collection (R9) and Deceuninck Flush Sash windows. These systems replicate 19th-century timber designs right down to the mechanical joints, but they never need painting.
This allows you to upgrade to modern double glazing without ruining the character of your home. Unlike original timber which can warp and rot, our timber-alternative ranges offer decades of low-maintenance performance. We offer a choice of mechanical joints for that authentic handcrafted look, alongside a vast palette of period colours and monkey-tail handles to complete the effect.
See It In Person: The Roseview 'Ultimate Rose'
Seeing is believing. Many of our Marlborough clients are initially sceptical about "plastic windows" until they visit our showroom and see the Roseview 'Ultimate Rose' sash window.
This award-winning window is virtually indistinguishable from timber. It features a slim mid-rail, authentic mechanical joinery, and a deep bottom rail that perfectly mimics Victorian craftsmanship. Critically, it features "run-through" sash horns—integral to the frame structure rather than stuck on—which provides a seamless, high-quality finish required for premium properties.
Beyond its appearance, the Ultimate Rose can be specified with acoustic glass to significantly reduce traffic noise from the High Street (A4), ensuring your home is as peaceful as it is beautiful.
Tiled Garden Rooms & Extensions
Many Marlborough properties benefit from beautiful garden views towards Savernake Forest or the River Kennet, but older conservatories can be too cold to enjoy them in winter. We specialise in replacing glass or polycarbonate roofs with Solid Tiled Conservatory Roofs.
A tiled roof creates a true "Garden Room" that feels like a permanent extension. It balances the temperature year-round, removes the glare of the sun, and drastically reduces rain noise. We can install Velux windows to maintain light levels and finish the exterior with tiles that match your existing property.
Planning Permission Made Easy: Changing a glass roof to tiles is classified as a "material change" and usually requires Planning Permission and Building Regulations approval. This deters many installers, but not us. KJM Group handles the entire application process for you, ensuring your new room is fully compliant and stress-free.
Composite Doors: Matching Your Windows
A standard uPVC door can ruin the look of a period cottage. That is why we offer a vast range of Composite Doors designed to perfectly complement our heritage windows.
As you can see from the image, we can match a Residence 9 window with a high-security composite door in the same finish. Whether you choose a solid-core design in Chartwell Green, Painswick, or classic Black, you get a cohesive look that enhances your home's kerb appeal. All our doors come with multi-point locking systems as standard, keeping your home secure without compromising its traditional charm.
Aluminium: Slim, Strong & Modern
While Marlborough is famous for its history, many homeowners are adding modern extensions to the rear of their properties to create open-plan kitchen diners. For these spaces, Aluminium is the material of choice.
We install premium Aluminium Bi-Fold Doors and slimline windows that maximise the light flooding into your home. The incredible strength of aluminium allows for thinner frames and larger panes of glass, giving you uninterrupted views of your garden or the Wiltshire countryside. Available in contemporary Anthracite Grey or classic Black, they provide a stunning contrast to traditional brickwork.
Discuss Your Project With Us
Bespoke advice for Marlborough homes. No hard sell, ever.
Request a Free Design ConsultationOr call our team on 01264 359355
Living in a Conservation Area?
Replacing windows in historic towns involves specific planning rules. We have written a detailed guide on how to navigate this in Alresford, Marlborough, and beyond.
Read our Heritage & Conservation Guide »Marlborough Home Improvement FAQs
In most cases, yes. Replacing a translucent glass roof with a solid tiled one is considered a 'material change' to the property's appearance, which typically requires Planning Permission. It also requires Building Regulations approval regarding structural support and insulation. KJM Group manages this entire process for you, dealing with Wiltshire Council to ensure full compliance.
You can, but you must be careful with the design. Standard uPVC is often rejected. We install specific heritage ranges (like the Residence Collection) that mimic traditional timber joinery so closely they are frequently approved by conservation officers. We can advise you on what is likely to be accepted for your specific street.
Yes, we cover the entire SN8 postcode area and the wider Wiltshire countryside, including Ramsbury, Aldbourne, Pewsey, and Burbage. We are very familiar with the mix of thatch, brick, and flint architecture common in these villages.
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