Foil 25m/40m/50M Aluminium Bubble Floor Wall Thermal Double Insulation Loft Shed

Thermal Resistance: 0.79m2K/w (20mm clear cavity to foil faces). Perfect for adding extra insulation to roofs, walls, floors, Greenhouses and more. Material: Double Sided Aluminum Foil Film. 1x Aluminum Foil Film.

eBay