Free Enquiries
0800 088 6341Georgian properties represent some of Britain's finest residential architecture. Their elegant proportions and original sash windows are irreplaceable — but they are also notoriously draughty and cold. Secondary glazing is the only solution that genuinely improves performance without compromising the building's historic character.
Georgian properties — built roughly between 1714 and 1830 — are characterised by their symmetrical facades, large sash windows with six-over-six or eight-over-eight pane configurations, and elegant proportions. Many are listed buildings, and virtually all are in conservation areas.
Original Georgian sash windows are single-glazed with timber frames and fine glazing bars. They are beautiful but thermally poor — original glass is typically 2–3mm thick, and the frames allow draughts to penetrate as the timber shrinks and expands. For properties in urban locations, road noise and urban sound are significant problems.
Most Georgian properties of quality are Grade I or Grade II listed, meaning planning consent is required for almost any external alteration — including window replacement. Secondary glazing is specifically endorsed by Historic England and English Heritage as the appropriate solution for listed Georgian buildings, as it is installed internally without touching the original fabric.
For Georgian properties we recommend slim aluminium profiles in a colour matched precisely to the original window frame — typically white or off-white for painted timber. The secondary glazing sits within the window reveal and when the sash is closed, the secondary pane is barely visible. Glazing bars on the secondary unit can be aligned with those on the primary window for a seamless appearance.
A correctly specified secondary glazing installation in a Georgian property delivers: up to 80% noise reduction with acoustic laminate glass; up to 65% reduction in heat loss with Low-E glass; elimination of draughts through original sash frames; protection of original glass from condensation damage.
Up to 80% noise reduction with acoustic laminate glass and 150-200mm air cavity.
Up to 65% heat loss reduction with Low-E glass. Room temperature improvement up to 4°C.
Installed internally. Does not require planning permission in most cases. Suitable for listed buildings.
Multi-point locking adds a substantial second barrier against forced entry.
Made to measure for any window shape or size. 200+ RAL colours. 10-year guarantee.
Send a photo and dimensions — no site visit needed. Reply within 24 hours.