Saarpor Insulation Roll With Foil

Upgrade behind-the-radiator wall performance with this optimised insulation roll: 50 cm wide by 5 m long (covering approx. 2.5 m²) and made of a 4 mm thick polystyrene core laminated to reflective aluminium foil.

• Highly reflective surface: The foil facing helps reflect up to 95% of radiant heat into the room rather than into the wall cavity.
• Thermal efficiency improvement: Designed specifically for placement behind radiators (or similarly positioned heating appliances), this roll can reduce heat loss through the wall by up to 16%.
• Convenient roll format: At 50 cm width and 5 m length, it provides a manageable size for cutting and fitting behind units without excess waste.
• Dual benefits: In addition to thermal reflection, the rigid polystyrene core helps cover minor wall imperfections and provides a lightweight backing substrate.

Ideal For

• Rooms with radiators mounted on cold external walls.
• Situations where you’re seeking faster warm-up times and less wasted heat.
• Retrofitting older build walls without major structural insulation changes.
• Home offices, living rooms, bedrooms — wherever comfort and efficiency matter.

Why it works Radiators mounted on external walls often lose a significant portion of generated heat into the wall rather than the room. Installing this foil-backed insulation directly behind the radiator interrupts that pathway — reflecting heat outward into the living space, warming the room faster and improving overall comfort.