Extreme’s SIP Roofs allow for design flexibility and can create unique spaces. What you see on the outside is what you truly get on the inside for vaulted space. Depending on the design of the house you can create another whole level without increasing the footprint of the house. This will bring the cost per square foot of a house down! Not only do you get extra space at no extra cost, but the energy efficiency of Extreme’s SIP Roofs is an added benefit.