Insulating window treatments

Windows are a major source of heat loss in winter and heat gain in summer. The right window treatment can prevent up to 40% of that heat loss. Honeycomb blinds are the champion: their honeycomb structure traps an insulating air layer between two fabric layers, acting like an extra glass layer. Thick curtains with thermal lining form an extra barrier against cold and heat. Pleated blinds also provide insulation, though less than honeycomb. The combination of honeycomb or pleated blinds with curtains gives the best insulation result.

Tips

Honeycomb structure

The honeycomb structure of honeycomb blinds traps a still air layer. This acts like an extra glass layer and can prevent up to 40% heat loss.

Thermal lining

Add a thermal lining to your curtains for extra insulation. The lining reflects heat back into the room in winter and keeps heat out in summer.

Larger cells

With honeycomb blinds, larger cells (45 mm) insulate better than smaller ones (25 mm). The extra air space makes the difference.

Frequently asked questions

Which window treatment insulates best?

Honeycomb blinds insulate best of all window treatments. The double fabric layer with air cells between them prevents up to 40% heat loss. Thick curtains with thermal lining are a good alternative. The combination of both gives the best result.

How much can I save with insulating window treatments?

Honeycomb blinds can prevent up to 40% of heat loss through windows. This can noticeably reduce your energy bill, especially with single glazing, older windows or large windows. Savings depend on your glass insulation, cell size, and consistent use.

Insulating window treatments