B-G Aluminium Self-Adhesive Foil Fibreglass. Material: Aluminium and Fibreglass. Heat Reflective Barrier Sheet. Available in sheet sizes of 12” x 12” (305mm x 305mm) or 24” x 24” (610mm x 610mm) and a thickness of 0.8mm, the aluminised material is easily cut to shape using scissors or a sharp knife, and is capable of reflecting up to 90% of radiant heat.
eBay