What is the weight for a 15' - 1/8" roll? I am looking to purchase 3-5. Also, how difficult to roll up seasonally? I would use this in winter in an interior cold floor (barn) space.

A 15' long roll of our 1/8" Eco-Flec is approximately 39 pounds. You can easily roll up and roll out our Eco-Flec Rolls. Our 1/8" roll is pretty thin, so it will offer some thermal properties but we would suggest a thicker roll to insulate properly and to be able to withstand daily use.