oops i mean you're fine if you "can't" fit a piece of paper through the seal.

i can't imagine this works at all. usually when you insulate something, it's because you can feel energy escaping. think about insulated vs. non-insulated windows. non-insulated windows feel COL...

very cool. we totally had pots on our roof last summer and nearly gave up when we realized the water pressure was too low to get up there.