KLIS JOINERY & CARPENTRY LTD
LONDON TIMBER SPECIALISTS
Bespoke timber bay window replacements crafted to preserve your home’s character. Double glazed, draught-free, structurally secure, and built to last.
Call us if you’re experiencing:
Older bay windows often allow heat loss, outside noise, and draughts into the home. Modern timber replacements with double or triple glazing can significantly improve insulation and everyday comfort.
Bay windows are exposed to years of weather and moisture, particularly around joints, cills, and external timber sections. When deterioration becomes severe, replacement is often more reliable than ongoing repair work.
If your bay windows have become warped, difficult to operate, no longer seal correctly, or show signs of movement and misalignment, replacement can restore smooth operation, security, and reliability.
Older bay windows often allow heat loss, outside noise, and draughts into the home. Modern timber replacements with double or triple glazing can significantly improve insulation and everyday comfort.
Bay windows are exposed to years of weather and moisture, particularly around joints, cills, and external timber sections. When deterioration becomes severe, replacement is often more reliable than ongoing repair work.
If your bay windows have become warped, difficult to operate, no longer seal correctly, or show signs of movement and misalignment, replacement can restore smooth operation, security, and reliability.
We’re proud of our consistently strong reviews on Checkatrade and Google. Homeowners regularly choose us for reliable workmanship, clear communication, and careful installation work on timber bay window projects across London.
We’ll explain clearly whether your bay windows are suitable for repair or whether replacement is likely to offer better long-term value, comfort, and reliability.
From Victorian and Edwardian bay windows to more modern properties, we understand how to install replacement timber windows that suit the style, proportions, and character of your home.
Bay windows require accurate alignment, sealing, and structural fitting to perform properly. We take care to ensure your replacement windows operate smoothly, insulate effectively, and remain reliable for years to come.
Reach out to Klis Joinery & Carpentry for straightforward advice and a complimentary home consultation. We’ll assess the condition of your existing bay windows, explain your options clearly, and help you decide whether replacement is the right long-term solution for your property.
We’re not pushy, and we’re not a hard-sell. We’re here to offer sound, reputable advice that allows you to make an informed decision!
We come to you, assess your windows in person and provide a clear written quote. No call centres, no pressure, no obligation.
Your replacement bay windows are built to your exact measurements and installed by our team with minimal disruption to your home.
Old frames removed, site left spotless, every window tested before we leave. We're on hand if you need us after the job is done.
Serving homeowners across London
We install replacement bay windows across central and west London. Not sure if we cover your area? Call or message us — we’re happy to advise.
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Repair is often possible when the main bay structure is still solid and issues are limited to minor draughts, isolated timber damage, or worn components. Replacement usually becomes the better long-term option when the timber has significantly deteriorated, the bay structure has become unstable, or the windows no longer insulate or operate properly. We’ll assess your existing bay windows honestly during a free home visit and explain whether repair or full replacement is the more practical solution for your property.
Yes — preserving the original appearance of your bay windows is a key part of our approach. We carefully match existing timber profiles, glazing bar layouts, proportions, and detailing so the replacement windows look natural within the character of your home. Whether your property features Victorian, Edwardian, or more distinctive bay window designs, we work from the existing structure to ensure the replacements remain in keeping with the original style.
Yes. Our timber bay window replacements are available with modern double or triple glazing fitted into traditional timber frames. This allows you to improve insulation, reduce outside noise, and increase everyday comfort while maintaining the classic appearance of your property. Triple glazing can also be suitable for homes on busy roads or where improved thermal performance is a priority.
Yes, we regularly work on timber bay windows in conservation areas and listed properties across London. Requirements can vary depending on the borough and the building’s status, but we’re familiar with the typical expectations around timber construction, glazing specifications, and preserving original bay window designs. We can advise you on what is likely to be acceptable before any work begins.
For a typical residential bay window replacement, work is usually completed within one to several days depending on the size and complexity of the installation. Larger projects involving multiple bay windows or full-property replacements are carefully planned to minimise disruption and ensure the structure remains properly protected throughout the process. We’ll provide a clear timeline during your home visit so you know exactly what to expect.
We use high-quality, sustainably sourced African Sapele hardwood selected for its strength, stability, and long-term durability. All timber is treated before installation to help resist moisture, rot, and warping — particularly important for exposed bay window structures. With proper maintenance and periodic repainting, well-made timber bay windows can last for decades. We’ll also advise you on suitable finishes and long-term care once the installation is complete.
Yes. Existing bay windows and frames are fully removed as part of the replacement process. We take care to protect surrounding finishes during installation and ensure the new bay windows are properly aligned, sealed, and operating smoothly before the job is completed. Every installation is checked carefully to make sure the windows open, close, and insulate as they should.
Costs vary depending on the size of the bay window, glazing specification, structural requirements, and any conservation or period-matching considerations. Because bay windows are typically larger and more complex than standard window installations, pricing can vary significantly from property to property. The best way to get an accurate figure is through a free home visit — we’ll assess your existing bay windows, discuss your requirements, and provide a detailed written quote with no obligation to proceed.
