Beautiful, New, Double Glazed Sash Windows in London

Are you tired of draughty windows?

Double Glazed Sash Window Replacement

Are you ready to replace your rotten, damp windows?

At Novells Sash Windows, we know how frustrating tired timber windows can be. Unwanted cold draughts creep through the gaps and leave rooms uncomfortable, while lingering condensation brings the worry of damp patches and the very real risk of black mould affecting your family’s health. When your windows are no longer performing, even everyday living can feel like a battle against the elements. Energy slips straight through the glass and frames, utility bills rise, and you’re left paying far more than you should to keep your home warm.

The trouble rarely stops there. Ageing sash windows can drag down the overall value of your home and diminish the charm and character that make London properties so special. Instead of enjoying your space, you can find yourself stuck in a cycle of repairs and maintenance, patching up problems that inevitably return. New sash windows from Novells change all of that. We offer a local service throughout the London boroughs, designing and installing beautiful, energy-efficient sash windows that are FENSA registered and built to last. We aim to restore comfort, style and peace of mind, so your home feels warmer, healthier and effortlessly elegant for years to come.

ENjoy a warm and cosy home

Transform your living space with hassle free, beautiful sash windows.

Energy efficient sash windows to reduce your bills.
Enhance your home’s curb appeal significantly
Say goodbye to condensation and hello to comfort.
Expert installation with over 20 years of experience.

The cost of new sash windows in London

We’re here to provide a solution.

Pricing for new sash windows can feel like wandering through a fog of wildly different quotes, so we like to keep things clear. Some companies charge eye-watering figures because their costs are driven by premium materials, specialist joinery workshops and layers of overheads that do not always result in better craftsmanship. Others simply position themselves as luxury, whether or not the finish justifies the price. As a well-run FENSA registered local business working across London, South London and Surrey, we keep things transparent, focus on genuine quality and never inflate a quote for the sake of it.

At the opposite end of the scale, very low prices usually come with hidden risks. Untreated or poor-quality timber starts to fail early, leaving you exposed to rot and insect damage. Essential steps such as correct wood preparation or breathable microporous paint systems are often skipped, and glazing, hardware and installation standards tend to follow the same pattern. A low-cost alternative can become very expensive when you need to replace the windows again, far sooner than expected.

Our pricing typically sits in the mid to high range because it reflects real craftsmanship, durable materials and an installation that protects your home for decades rather than years.

3 Simple Steps to New Windows

Experience a seamless transformation for your home.

1
Get in Touch
Get in touch with our specialists today
2
Book a Home Appointment
We’ll assess your needs and provide a quote
3
Order your Windows
Select your perfect design and installation date

WHAT OUR CLIENTS SAY ABOUT NOVELLS SASH WINDOWS

“The team made the process so easy and the results are beautiful!

Sarah J

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Frequently Asked Questions (FAQs)

How much do new sash windows cost in London?

Prices for new, double-glazed sash windows in London vary depending on size, glazing choice and bespoke joinery requirements. Novells sits in the mid to high range because we use high-grade, properly treated timber, quality glazing and expert installation. We provide clear, transparent quotations with no hidden extras.

Will new sash windows make my home warmer and more energy efficient?

Yes. Modern double glazed sash windows drastically reduce draughts, heat loss and condensation. This creates a more comfortable home, cuts energy bills and protects against damp related problems including black mould.

Do new sash windows improve the value and appearance of my property?

Absolutely. High quality sash windows enhance kerb appeal, restore lost character and signal proper upkeep to future buyers. Poor or ageing windows can drag down a property’s value, so upgrading is often a sound investment.

How long do quality sash windows last?

When built with treated timber, finished with microporous paint systems and installed by a FENSA-registered specialist, they can last several decades. At Novells, we also provide aftercare support to keep them performing beautifully.