Up to 80% reduction in outside noise levels — enough to transform city-centre bedrooms, hospital wards and street-facing offices.
The trapped air gap improves U-values noticeably. Most clients report cutting heating use in the first winter after install.
A second pane and frame is a serious physical deterrent to opportunistic entry through ground-floor and accessible windows.
Nothing about the external appearance changes. Ideal for listed and Georgian/Victorian buildings. Fully reversible if needed.
Typically a fraction of the cost of replacing your existing windows — and you keep the original frames you actually like.
By keeping the inner pane closer to room temperature, secondary glazing dramatically reduces winter condensation on original windows.
