Reflective wall and ceiling membrane

Novia reflective vapour permeable membrane. To reduce heat buildup in roof and walls, and to keep heat in depending on placement. Full roll, never opened. Worth about $300. Asking $150. Similar to: https://novia.co.uk/breather-membranes/novia-reflex-reflective-roof-and-wall-breather This is NOT used like Tyvek or other plastic wraps. It is not a weather barrier but rather a reflective insulation.