Hardwood Sash Windows
At Mortice & Green, we design, manufacture and install premium hardwood sash windows for period properties throughout London. Since 1994, our family-run business has specialised in producing bespoke timber sash windows that preserve the character of traditional homes while delivering the strength, durability and energy efficiency expected from modern joinery. Every window is handcrafted in our independent workshop by experienced craftsmen using carefully selected hardwood, allowing us to replicate original designs with remarkable accuracy. Whether you’re replacing ageing sash windows, renovating a listed property or restoring a Victorian townhouse, our expert team delivers exceptional workmanship from initial survey through to final installation.
Why Choose Hardwood for Your Sash Windows?
Hardwood has long been recognised as one of the finest materials for traditional sash windows thanks to its natural strength, stability and longevity. Unlike many modern alternatives, quality hardwood is exceptionally resistant to warping, swelling and everyday wear, making it particularly well suited to the British climate.
Our bespoke hardwood sash windows are manufactured using premium-grade timber that is carefully selected for both durability and appearance. Each window is individually crafted to suit the exact dimensions and architectural style of your property, ensuring a seamless fit and authentic finish.
With regular maintenance, hardwood sash windows can last for many decades, making them an excellent long-term investment for homeowners looking to enhance both the appearance and value of their property while preserving its period character.
Traditional Craftsmanship with Modern Performance
Although our hardwood sash windows faithfully reproduce the appearance of traditional timber windows, they also incorporate modern manufacturing techniques that improve everyday comfort and performance.
Every window is precision engineered to provide smooth operation, excellent weather resistance and a secure fit within the existing opening. Where appropriate, we can incorporate slimline double glazing that improves insulation while maintaining the elegant proportions associated with traditional sash windows.
Additional benefits include improved thermal efficiency, reduced outside noise, enhanced home security and significantly lower maintenance compared to ageing or deteriorated timber windows.
Whether your property is a Georgian townhouse, Victorian terrace or Edwardian family home, our bespoke hardwood sash windows are designed to complement the original architecture while providing reliable performance for generations to come.
Handcrafted for Period and Heritage Properties
Replacing windows in older properties requires more than simply selecting the correct dimensions. Every period home has its own architectural details that contribute to its unique appearance, and preserving these features is at the heart of everything we do.
Our experienced craftsmen carefully reproduce original mouldings, glazing bars, horns, meeting rails and timber profiles to ensure each new hardwood sash window blends naturally with the existing property. For listed buildings and homes within conservation areas, we have extensive experience producing bespoke windows that satisfy heritage requirements wherever possible.
Because every window is manufactured in our own workshop rather than ordered from a standard catalogue, we can accommodate almost any design, ensuring your replacement windows remain sympathetic to the original building while benefiting from modern durability and performance.
Why Choose Mortice & Green?
For more than 30 years, Mortice & Green has been trusted by homeowners across London to manufacture and install high-quality hardwood sash windows. Our reputation has been built on traditional craftsmanship, honest advice and meticulous attention to detail.
Unlike larger national companies, all surveys are carried out by one of the company proprietors, ensuring every recommendation is based on genuine expertise rather than a sales target. Every window is manufactured and installed by our own in-house team, allowing us to maintain complete quality control throughout the entire project.
We believe replacement should only be recommended when it is genuinely the most suitable option. Where existing windows can be restored, we’ll always explain the alternatives before recommending new hardwood sash windows.
Every bespoke hardwood sash window we manufacture is backed by our industry-leading 25-year guarantee, giving you complete confidence that your investment has been built to stand the test of time.
Created for Homes Across London
Our hardwood sash windows can be found in some of London’s finest period properties, from elegant Georgian squares to Victorian terraces and Edwardian family homes. We regularly work with homeowners, architects and conservation specialists who require bespoke timber windows that respect the history of the building while improving everyday living.
Our experienced team undertakes projects throughout Central, North, West, North West and South West London, including areas such as Kensington, Chelsea, Fulham, Wimbledon, Hampstead, Islington, Hackney, Notting Hill, Mayfair, Belgravia and Putney.
If your property is located elsewhere within Greater London, we’d be delighted to discuss your project. We provide free site surveys across the capital and can advise on the most appropriate hardwood sash window solution for your home, whether you’re replacing a single window or undertaking a complete property renovation.
How Much Do Hardwood Sash Windows Cost?
Because every hardwood sash window is manufactured to order, the cost varies depending on the size, design and specification of the project.
Several factors influence the overall price, including:
- Window dimensions and opening style.
- Choice of hardwood.
- Double glazing or slimline glazing specification.
- Bespoke mouldings and period detailing.
- Conservation or listed building requirements.
- Number of windows being manufactured.
We provide free, no-obligation quotations following a detailed survey of your property. During our visit, we’ll assess your existing windows, discuss your requirements and provide honest advice on whether restoration or replacement is the most suitable solution.
With handcrafted joinery, premium materials, over three decades of experience and an industry-leading 25-year guarantee, Mortice & Green’s hardwood sash windows offer a long-lasting investment that combines timeless craftsmanship with modern performance.
Frequently Asked Questions
What are the advantages of hardwood sash windows over softwood?
Hardwood – particularly oak – is denser, more dimensionally stable, and more naturally resistant to rot and moisture than softwood. This makes hardwood sash windows significantly more durable and better suited to London’s wet climate. Hardwood windows can be machined to finer profiles, producing crisper, more authentic period detailing than softwood alternatives. The initial cost of hardwood windows is higher than softwood, but the substantially longer lifespan makes them more cost-effective over the life of the property.
What species of hardwood does Mortice & Green use for sash windows?
Mortice & Green primarily uses English and European oak for the manufacture of bespoke sash windows. Oak has been used in fine joinery for centuries precisely because of its outstanding durability, dimensional stability, and workability. We also work with other hardwood species where specified – including accoya (acetylated timber) for exceptional durability and stability in exposed locations. All timber is sourced from responsibly managed suppliers.
Can hardwood sash windows be made to match original Victorian or Edwardian profiles?
Yes. Matching original period profiles is one of our core specialisms at Mortice & Green. We take detailed measurements and profile recordings from the existing windows – or from original drawings where available – and manufacture replacement sashes and frames that replicate the exact dimensions, moulding profiles, glazing bar sizes, and proportions of the originals. Our aim is to produce windows that are indistinguishable from the originals.
How long do hardwood sash windows last?
Properly manufactured and maintained hardwood sash windows have a lifespan of 60 to 80 years or more. The original sash windows in many Victorian and Edwardian London properties – now 120 to 150 years old – are testament to the longevity of quality hardwood joinery. Regular repainting every seven to ten years is the primary maintenance requirement. Mortice & Green’s windows are manufactured to the same standard that produced those originals.
Are hardwood sash windows suitable for conservation areas and listed buildings in London?
Yes. Bespoke hardwood sash windows – particularly those manufactured in oak to match the original profile and proportions – are the preferred replacement option in most London conservation areas and are often the only replacement type that listed building officers will approve. The material authenticity, the quality of the joinery, and the period accuracy of Mortice & Green’s hardwood windows make them appropriate for the most sensitive heritage settings.
How much do bespoke hardwood sash windows cost in London?
Bespoke hardwood sash windows are a premium product and are priced accordingly – reflecting the quality of the materials, the skilled joinery involved in manufacture, and the slimline double glazing units used. Exact pricing depends on the number, size, and specification of the windows required. Mortice & Green provides free, no-obligation quotations following a site survey. Call 020 7118 9191 to arrange a visit and discuss your requirements.