I purchased the double sided foil insulation from a local speed shop near my home. I know they sell on ebay all the time so they should be able to ship it to your door. Its nice HD stuff! I think the whole role was $29.99. IIRC, my car took one and a half rolls. Here is the link to the stores website http://site.mawebcenters.com/ksautoperformancestore/index.html