Keeping the heat in a Kent house that leaks it

Honeycomb is the physics answer

Cellular honeycomb fabrics hold air inside their own structure. Fitted close to the reveal, ideally with side channels, they measurably slow convection across the glass. Luxaflex Duette is the range we specify most often for this.

• Honeycomb cellular fabrics: best thermal performance per pound.
• Thermal lined Roman blinds: warmth with a soft, dressed look.
• Shutters with a tight frame seal: solid panel styles perform best of all.
• Side channels: they matter as much for heat as they do for light.

Solid panel shutters in winter

A solid panel shutter closed against a cold sash is close to a second layer of wall. It is also the traditional answer in period Kent houses, which is why it looks right rather than bolted on.

Summer works the same way in reverse

The same fabric that holds warmth in February holds solar heat out in July, particularly with a reflective backing on a west facing room. One purchase, two seasons.