Double Glazed Sash Windows London
At MJ Kloss Carpentry, we design, manufacture, and install bespoke double glazed timber sash windows across London.
Whether you’re restoring a period property or upgrading to improve comfort and energy efficiency, our team specialises in creating made-to-measure wooden sash windows that combine traditional craftsmanship with modern performance.
Double Glazed Timber Sash Windows London
At MJ Kloss Carpentry, we design, manufacture, and install bespoke double glazed timber sash windows across London. Whether you’re restoring a period property or upgrading to improve comfort and energy efficiency, our team specialises in creating made-to-measure wooden sash windows that combine traditional craftsmanship with modern performance.
Why Choose Double Glazed Sash Windows?
If you live in an older London home, you’ve probably felt the draughts and noise that come with original single-glazed sash windows. Double glazed sash windows provide all the charm of classic joinery with the benefits of advanced glazing technology—better insulation, lower energy bills, and reduced outside noise.
Each window we produce is crafted from high-quality timber, designed to match the style and proportions of your existing frames. We work with homeowners, property developers, and architects across London who want to retain the authentic look of sash windows while improving comfort and efficiency.
Bespoke Double Glazed Wooden Sash Windows London
Every property is different, which is why we offer custom timber sash windows built to order. Our experienced window joiners manufacture windows to your exact specifications, whether that means replicating historic details or achieving a clean, contemporary finish.
We use sustainable hardwoods and softwoods, finished in your choice of paint or stain. Each sash is fitted with energy-efficient double glazing, striking a perfect balance between performance and appearance.
Our double glazed wooden sash windows not only help you save on heating costs but also reduce condensation and improve security.
Replacement Double Glazing Sash Windows London
If your existing windows are beyond repair, we offer a full replacement double glazing sash window service. We carefully remove your old frames and replace them with new, like-for-like timber sashes that maintain your property’s character. Whether it is single or double hung sash windows
Heritage-style double glazed sash windows
For listed or conservation properties, we can manufacture heritage-style double glazed sash windows that meet planning requirements while improving thermal performance.
Our installation team ensures a perfect fit with minimal disruption. We take care of everything—from surveying and manufacturing to painting and final fitting.
How Much Do Double Glazed Sash Windows Cost in London?
The cost of double glazed sash windows in London varies depending on size, style, materials, and finish. Because each window is made to measure, we provide tailored quotes rather than standard prices.
To get an accurate estimate on double glazed sash windows in London, we recommend arranging a free consultation and site visit.
We’ll discuss your design goals, glazing options, and frame finishes, then provide a detailed written quote.
Expertly Made and Fitted Timber Sash Windows
At MJ Kloss Carpentry, we take pride in our craftsmanship. All our double glazed sash windows are manufactured in the UK by skilled joiners, ensuring quality at every stage. We handle both supply and installation, so you get a seamless service from start to finish.
We’ve worked on everything from Victorian terraces to Georgian townhouses and modern refurbishments throughout London. Our approach is simple—honest advice, high standards, and windows built to last.
Get a Quote for Double Glazed Sash Windows London
If you’re considering upgrading your sash windows, we’d be happy to help. Our team can guide you through the process, from design and material selection to fitting and aftercare.
Contact MJ Kloss Carpentry today to arrange a free survey and quote for bespoke double glazed sash windows in London.
Give us a call
At MJ Kloss Carpentry & Joinery we are always available to answer any question or query about your home project, big or small. Our phone lines are open from 9:00am to 5:00pm weekdays. We hope to hear from you soon.
