Foilflex

Foilflex is a flexible thermal insulation made of closed-cell crossed linked polyolefin reinforced by heat laminated Aluminium foil plus UV protection coating.
Condensation is the major problem caused by insufficient insulation. Foilflex having more than 90% closed-cell material in addition to the aluminium foil face can be classified as vapour barrier as per ASHRAE and British Standards recommendation even without additional vapour barrier coatings or foil.