Two packages.
Every sash bespoke.
Refurbishment or vacuum-glazing retrofit — the package defines what we do, the survey sets the line items. We work on every sash type and shape we have come across.
What we do.
We offer two services. They share a method — preserve the original frame, replace only what has failed — and split on what the window needs.
Refurbishment brings a tired sash back to working order.
Retrofit fits vacuum-insulated glass into the original frame for thermal performance.
Take one. Take both. The survey is free and tells you which.
The two packages.
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Package one
Refurbishment
The original sash, working again.
Bringing the original sash back to working order. The frame stays. The glazing bars stay. Original glass stays where it survives. Only what has failed gets replaced.
The window the building was built with, running quietly, for another fifty years.
See the refurbishment page → -
Package two
Double-glazing retrofit
Heritage windows, modern glass.
Vacuum-insulated glass units fitted into your existing sash frames. The window stays in place — only the glass changes. U-value drops from ~5.0 to ~0.7 W/m²K in an 8 mm unit.
Triple-glazed thermal performance behind the original sightline.
See the double-glazing retrofit page →
Any sash. Any shape.
Box sashes, Yorkshire sliders, curved bays, curved-head Georgians, oriels, segmented arches, plate-glass Victorians — we have refurbished or retrofitted them all. The two packages stay the same; the scope adjusts to the window.
The detailed line-item view — what each package includes, what is optional, what is opt-out — lives on the scope sheet.
See the full scope sheet →