Reflective Aluminium Radiator Foil

These radiator insulation panels are made from thin, flexible reflective aluminium foil sheet, lightweight and easy to handle. Each panel is supplied uncut, allowing full customisation to match any radiator width or wall space behind it. The material is non-toxic, flame-retardant (as standard for UK building-compliant foils), and designed for direct placement against masonry or plasterboard walls behind domestic radiators. The highly reflective surface redirects infrared heat emitted from the rear of the radiator back into the room instead of allowing it to be absorbed by cold external walls. This improves effective heat output without changing your heating system or thermostat settings. Ideal for use in living rooms, bedrooms, home offices, and rental properties where upgrading radiators or insulation isn’t possible — simply trim with scissors, position flat behind the radiator, and enjoy improved warmth distribution and reduced heat loss.