Arctic Fox Roofing Insulation is a 99% pure aluminum facing heat laminated to a foam core. To be used in conjunction with traditional felt paper Roofing Insulation provides thermal protection under metal roofing, stone coated steel and clay tile. The product is very lightweight and easy to install. With using metal roofing and clay tile these products will last a very long time and it's quite possible that your roofing material will outlive your underlayment. Roofing Insulation provides you with an extra layer of comfort and confidence.