Triple Glazed Sash Windows London
At MJ Kloss Carpentry, we design, manufacture, and install bespoke triple glazed timber sash windows across London. If you want the classic charm of traditional sash windows with the highest level of insulation and energy efficiency available today, triple glazing sash windows are an excellent choice.
Our joinery team handcrafts every window from solid timber, combining heritage design with the latest glazing technology to deliver warmth, comfort, and quiet living—all without compromising the look of your property.
Why Choose Triple Glazed Sash Windows?
Sash windows are one of the most beautiful architectural features found in London homes, but traditional single glazing often leads to heat loss and noise problems. Triple glazed sash windows solve these issues while keeping the same timeless appearance.
With three panes of glass and two insulating air gaps, triple glazing provides outstanding thermal performance—far superior to single or even double glazing. The result is a more energy-efficient home that stays warmer in winter, cooler in summer, and quieter all year round.
If you live on a busy London street or in an exposed area, the added soundproofing from triple glazing can make a noticeable difference.
Bespoke Triple Glazed Wooden Sash Windows
At MJ Kloss Carpentry, every project starts with design. We create custom triple glazed wooden windows to suit the age and character of your property. Whether you own a Victorian terrace, a Georgian townhouse, or a modern home, our sash windows are made to measure for a perfect fit.
We use premium hardwoods and softwoods from sustainable sources, finished in your choice of paint or stain. Each frame is built using traditional joinery techniques and fitted with high-performance triple glazing units that improve both insulation and durability.
Our bespoke service allows you to choose everything from glazing bars and mouldings to hardware and finishes, ensuring your new sash windows complement your home beautifully.
Replacement Triple Sash Windows
If your existing windows are draughty or beyond repair, we can replace them with triple sash windows designed to match your original style. We carefully remove old frames and install new, handcrafted timber replacements that preserve your property’s period details.
We also work with conservation and listed properties, offering slimline triple glazed timber sashes that meet planning requirements while providing the benefits of modern energy performance.
Our installation team ensures precise fitting, airtight seals, and minimal disruption to your home.
The Benefits of Triple Glazing
- Exceptional energy efficiency – lower heating bills and improved thermal comfort
- Superior noise reduction – ideal for homes in busy or central London locations
- Enhanced security – the extra pane of glass adds strength and peace of mind
- Reduced condensation – warmer interior glass helps prevent moisture build-up
- Long-lasting quality – durable materials and expert installation for decades of performance
Expertly Made and Installed in London
All our triple glazed wooden sash windows are made in the UK by experienced joiners who understand the importance of detail. From initial survey and design to manufacturing and installation, we handle everything in-house to guarantee quality throughout.
We’ve worked on homes across London, helping homeowners upgrade their windows while maintaining the traditional look they love. Our goal is always the same, to create windows that look right, perform well, and stand the test of time.
Get a Quote for Triple Glazed Sash Windows London
If you’re ready to improve your home’s efficiency, comfort, and sound insulation, talk to the team at MJ Kloss Carpentry. We’ll guide you through your options, explain the differences between double and triple glazing, and provide a detailed quote for your made-to-measure timber sash windows.
Contact us today to arrange your free consultation and discover the benefits of triple 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.
