I just got my system installed today. It doesn't rattle alot, but it rattles enough to **** me off. One of the guys who was in the shop said he used Dap Tex spray foam from Home Depo as an alternative to dymomat. He bought 3 cans for $23. Has anyone else tryed this or have any idea if it will work or not? I bought two cans, but I haven't opened them yet.