Insulating film
Insulating window film for older glass
Low-emissivity films that help keep heat inside in winter. An option for single glazing and older windows, including period homes where replacement isn't straightforward.
What it does
For the windows you can't, or won't, replace.
Insulating film has a low-emissivity coating that reflects heat back into the room rather than letting it escape through the glass. It's most useful on single glazing and older units without modern coatings, where replacing the windows would be costly or would change the character of the house.
Where it works best
Single-glazed sash and casement windows
Older double glazing without a low-E coating
Period homes, including in conservation areas
- Conservatories that are cold in winter→
Good to know
Insulating film won't match modern double or triple glazing, but on the right glass it makes a real difference to how a room feels. If your home is listed or in a conservation area, we'll talk through any permissions before we start.
More about our process →Questions
Common questions.
On single glazing and older units, it makes a noticeable difference to how warm a room feels. See our guide on keeping a conservatory warm in winter.
Many low-E films also provide some solar control.
It depends on the glass type and age, which we check at the assessment.
Insulating films are clear, though some have a slight tint or sheen. We'll show you a sample on your own glass.
Other films
Solar control film
Clear films that cut heat and glare in glass extensions, conservatories and rooflights.
View film →02UV and anti-fade film
Helps protect floors, furniture and artwork from sun fading.
View film →03Privacy and frosted film
Frosted, etched and gradient finishes for bathrooms and overlooked rooms.
View film →04Decorative film
Bespoke patterns, bands and manifestations, cut precisely to your glass.
View film →05Safety and security film
Holds broken glass together and slows down forced entry.
View film →