Preserving Our Heritage
Original sashes, leaded lights and stained glass are irreplaceable. Secondary glazing protects them and improves the room — without touching the historic window.
The conservation officer's preferred option
Historic England and the vast majority of UK conservation officers recommend secondary glazing over replacement units for listed buildings and conservation areas. It's the only upgrade that's fully reversible and leaves the original fabric intact.
- Fully reversible install
- No alteration to original frame
- Invisible from the street
- Approved by Historic England guidance
Listed building consent
In many cases secondary glazing is exempt from listed building consent because no historic fabric is affected. Where consent is required, we provide drawings and specifications for your application at no cost.
Protecting fragile original glass
Old cylinder-blown, crown and hand-drawn glass is fragile and impossible to replace like-for-like. A room-side secondary pane shields it from thermal shock, impact and cleaning damage — a genuine conservation win.
Ready for a free, no-obligation quote?
South Yorkshire's specialists in secondary glazing — survey, measure, manufacture and install.