I have the floor of my attic insulated with rockwool and the middle section of the attic is floored as well. During the cold spell I left the attic door open to prevent pipes freezing as the attic is very cold. Would it be of any benefit to insulate the attic roof as well and also what product would be best suited. My real concern is to prevent pipes or tank freezing in cold weather as I am not living in the house.