Radiator Insulation Film Wall Foil Roll vs Reflectix Reflective Radiant Barrier Roll

The Radiator Insulation Film is the purpose-built pick for tucking behind a radiator: it comes in a 60 cm wide, 5 m roll with adhesive stickers, and its foil-bubble build reflects radiant heat back into the room. The Reflectix roll is a heavier, branded radiant barrier with a Class A fire rating, a vapor retarder and a stated R-value range, but at 16 in. wide it is aimed at walls, attics and ductwork rather than radiators. For a single radiator job, the foil film is simpler and shaped for the task; for a larger barrier project where fire rating and vapor control matter, Reflectix is the sturdier material.

• Choose the Radiator Insulation Film if you want a ready-cut, stick-on foil to place behind one or more radiators with minimal fuss.
• Choose the Reflectix roll if you are insulating walls, attics or ductwork and want a branded barrier with a Class A fire rating and vapor retarder.