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Sash window repairs Kent – Restore & Reglazing

Full range of sash window repair services in Kent and beyond.
As part of our restoration services, our team can upgrade single glazing to slimline vacuum-insulated glazing, install draught-proofing, and restore the full functionality of all types of wooden sash windows and doors.

Restoration of sash window box frames and sashes
Installation of slim VIG double-glazed units into individual sashes
Draught-proofing and functional restoration

Keep character – boost efficiency

We retrofit vacuum insulated glazing (VIG) directly into your existing timber sashes. This means you keep the original character of your windows, while achieving U-values that outperform current market standards and building regulations.

By meeting — and often exceeding — today’s energy performance requirements, your windows are future-proofed for any upcoming regulation changes. This ensures you won’t need another upgrade down the line, giving you long-term efficiency, compliance, and peace of mind.

The reglazing, combined with refurbishment and draught-proofing, brings a wide range of benefits.

These include soundproofing against external noise, the elimination of condensation and rattling, and, most importantly, significantly improved thermal insulation — keeping the heat in and making your whole house warmer during winter.

Thermal image of a house showing heat loss around an original wooden window, highlighted with a white circle and annotation. Text above reads: "Same timber frame. Zero heat drain." Sash windows repair Essex keeps your home warmer and more efficient.

Glazing: The King of Thermal Efficiency

It’s very simple — windows are essentially glass within frames. The better the glazing, the better the thermal insulation. Frames also play a role, but getting the glazing right accounts for 80–90% of achieving the desired results.

That’s why we use vacuum insulated glazing (VIG) in all of our projects.

It is widely regarded as the most energy-efficient and durable option on the market.

LandVac u-value performance vs other types of glazing

Glazing that fits original windows

We use ultra-thin 8 mm vacuum insulated glazing (VIG), which slots neatly into most existing timber frames.

This lets you keep the character of your original windows while enjoying top-level energy efficiency.

A comparison chart shows five types of glazing, including double glazing sash windows, by heat retention, thickness, and retrofit suitability, with labeled images and measurements for each glazing type.

Before & After Transformations

All timber frame issues are addressed during the reglazing process. Sashes are rebalanced, new sash cords installed, putty replaced, rot repaired, and new locks fitted.

The end result is original windows that look as though they have just been newly installed — but with the most advanced glazing available on the market today.