anyone ever give this stuff a go as underquilt?
comes in 4 foot wide roles. made for wrapping metal HVAC ducts. 3/16 foam sandwiched between foil outers. does not peel apart, and i can only imagine it will not absorb water. rolls down small and tight and is flexible.
best part is........
the 4 foot by 12 + foot peice i have must weigh less than 4 pounds.