Doesn't mean it's asphalt, just means it was manufactured on equipment that is used to make roofing products. Getting 4 mil foil to roll up would be a trick, so I'm curious to know if it actually is foil or the more likely plastic sheeting laminating a very thin layer of foil. Not saying it is that since I don't know. It's also important to know if the adhesive is formulated for vibration damping instead of waterproofing. What I do know is that this product is being sold by cthedinger. I think he is a member here. He announced this product a few months ago on another forum. A member there asked me to reply because he was making some pretty outrageous claims. By the time I saw it, things had become very heated and he was accused of having no idea how vibration dampers work. He posted that he did. Within minutes I received an e-mail from him asking for an explanation of how vibration dampers work. Ask for a sample. That's what he did. He contacted a few vendors, including me asking for samples to "help him make up his mind". He stuck some to the side of a soda can, dropped it on his parent's driveway and made a video. CLD Tiles won