Someone on this forum recommended I look into Foamglas T3+ for roofing insulation that meets requirements for my unvented cathedral roof in fire country while fulfilling my desire to reduce or eliminate petro-chemicals. I have been trying for days to reach a knowledgeable person at parent company Owens Corning. I talked to a generalist, who gave me the direct Foamglas dept. number, where I have left a couple so far unreturned messages. My email query got a response with three recommended stores in my area that carry the product – but in reality none of the three have ever even heard of it. My follow up email to Owens Corning has gone unanswered. There are many vendors in the UK/Europe, but I hate to buy an American product from overseas(!) Does anyone know where I can source Foamglad T3+ in the US? If you have experience with it for roofing installation, I would also really love to hear from you about your experience.