Bay Sash Box Windows
Timber Bay Sash Windows in London
Crafted with precision from premium Accoya and hardwoods for lasting quality
Designed to offer both timeless beauty and exceptional durability
Engineered for longevity, ensuring these windows stand the test of time
Adds an elegant and striking element to your home’s aesthetic
A lasting investment that will be admired for years to come
Product Features
Elegant slim profiles
Crafted and fitted by our expert team
Authentic reproductions
Fully Painted
Premium Bay Sash Windows in London
Over 30 years ago, Todi & Boys began specializing in the creation of exquisite timber sash bay windows using premium hardwoods.
Since then, we’ve dedicated thousands of hours to the design, production, and installation of some of London’s most admired sash bay windows.
Our elegant wooden bay sash windows come with high-performance double glazing, offering enhanced aesthetics along with excellent thermal efficiency.
Designed to keep your home warm in winter and energy-efficient year-round.
As one of London’s few joinery firms skilled in replicating historical designs, we craft exact replacements featuring detailed Georgian, Victorian, and Edwardian elements.
We are proud to preserve the charm of early 20th-century architecture while providing modern-day comfort and long-lasting performance.
Rich Timber Options
Explore our variety of timber options, including Engineered Redwood, Engineered Hardwood, Engineered Oak, and Accoya, with special timber types available upon request to suit your project’s unique requirements.
Softwood
Meranti
Sapele
Oak
Accoya
Sash Window Horns
A sash horn is a key feature, this males a traditional timber sash window instantly recognisable. The purpose of a horn was designed to strengthen the tendon on the joint of the window by also preventing the window from being opened too far.
Type 1
Type 2
Type 3
Type 4
Internal Glazing Bars
Timber glazing beading is used within the inside of the windows to hold the glazing inside of the frame. We offer to match your current window aesthetic or we suggest matching the style of window profile and internal bead for the most authentic reflection of traditional windows.
Explore Our Range of Colour Options
Our timber products are available in a wide range of finishes, including single colour, dual colour, and natural stained options. View our most popular RAL colours below to find the perfect match for your project’s style.
Customisable Glass Options
We offer a range of glass options designed to boost thermal efficiency, acoustic insulation and security. You can also customise your products further with decorative or obscured glass options.
Satin Glass
Vision Glass
Kathedral Glass
Arena-C Glass
Ironmongery and Hardware
Our extensive ironmongery range features a variety of handles, locks, and accessories in different finishes and styles to complement the aesthetic of your project while providing excellent security.
Fitch Catch with color options
Round Ended Pulley - Brass - Standard
3 Styles
Angel Ventlock - PVD Brass - Standard
5 Styles
Sash Lift - PVD Brass - Standard
4 Styles
Brass - Sash Vent Lock Push - Standard
6 Styles
What Our Customers Are Saying
Frequently Asked Questions
Get answers to common questions about our wooden sash windows, from their customisation and installation to maintenance and heritage compliance.
Which parts of London do you serve?
We proudly operate throughout London, with a focus on expertly crafted replacement timber bay sash windows. Our installations can be seen across a wide range of areas within M25, including Wandsworth, Balham, Clapham, Hammersmith, Twickenham, Richmond, Kensington, Putney, Earlsfield, Chelsea, Fulham, Wimbledon, and Surrey — along with many other locations.
Which type of timber is best for replacing bay sash windows?
When replacing timber sliding bay sash windows, we highly recommend Sapele or Accoya due to its outstanding durability and minimal maintenance needs. Although it comes at a higher upfront cost, its superior resistance to rot and eco-friendly properties make it a smart long-term choice.
That said, we understand each part of your home may require different solutions. For instance, Accoya is ideal for weather-exposed areas like south-facing windows, while other sections can be crafted from high-quality hardwoods such as Sapele—customised to suit your preferences and project needs.
Is planning permission required for installing timber sash bay windows?
Planning permission for wooden sash bay windows depends on your location and the conservation regulations specific to your area. If your property is within a conservation area, you’ll need to ensure that your replacements adhere to particular design and material standards.
At Greenwood Joinery, we are well-versed in local planning regulations and can assist you throughout the application process, making sure your sash bay windows comply with all requirements and helping to avoid delays. For more information, check out our blog A Guide To Replacing Windows In Conservation Areas.
What factors should be considered when living in a conservation area?
Living in a conservation area requires following strict regulations designed to preserve the historical and architectural character of your property. When it comes to wooden bay sash windows, like-for-like replacements are typically necessary, focusing on traditional designs, materials, and glazing.
However, certain areas of London may offer more flexibility regarding glass thickness, materials, and glazing choices. It’s essential to work with specialists who can ensure your new windows meet conservation guidelines while achieving the aesthetic you desire. At Greenwood Joinery, our team is here to guide you through these complexities and help you select the perfect bay windows for your home.
Are warranties available for timber bay windows?
Yes, we provide comprehensive warranties for all our bay sash windows. The duration of the warranty varies depending on the type of timber chosen and the level of maintenance required. If any issues arise, such as operational concerns, we will address them swiftly.
At Todi & Boys, we take great pride in our craftsmanship.
What is the cost of wooden bay sash windows?
The cost of wooden bay sash windows can vary based on several factors, including the quality of materials, size, design features, and whether your property is located in a conservation area.
We offer a variety of options, ranging from standard timber bay window sashes to fully customized, bespoke designs, all crafted with precision and care. Our team provides tailored consultations to help you understand the cost based on your specific needs and preferences.
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Our Process
From initial consultation to final installation, we’re with you every step of the way.
Survey & Order
Once you’ve paid your deposit, we’ll arrange a detailed site survey. Our experts will take precise measurements and assess specific requirements, ensuring a perfect fit and addressing any potential issues before manufacturing begins.
Design approval & Manufacturing
Based on the survey, we’ll create detailed designs for your approval. This includes specifications for sizes, glazing options, hardware, and finishes. We’ll work with you to refine the designs until you’re completely satisfied and process for manufacturing.
Installation
Your bespoke products will be expertly installed by our highly qualified fitters. Our team will deliver and install your products with precision and care, ensuring a flawless finish.
