Overview
- Stephen Hankinson of Electric Radiators Direct advises applying cling film to the inside of window panes to trap an insulating air layer.
- He directs households to prioritise windows, citing estimates that they account for roughly 20% of a room’s heat loss.
- The approach is described as most useful for single‑glazed windows and highly glazed spaces such as conservatories or orangeries.
- It is framed as a very low-cost alternative to official insulating films that may trim bills but cannot match triple glazing, with no independent savings data provided.
- Application guidance includes measuring and cleaning the glass, choosing a warm dry day, smoothing the film carefully, and checking for a tight seal without gaps.