01-11-2011, 02:58 AM
We are very pleased with the SIP (structural insulated panel) roofing panels that we got from Rob. They are sandwiches of corrugated metal with 2.5" of foam in the middle. About 3' wide, they easily support a person's weight on a 6' span. We have 4' otherwise unsupported eaves that you can step on to in order to work on the roof. When we began installing them on our open beams, it was a bright hot day. After putting up a few panels the crew grouped underneath for a break. It was obviously several degrees cooler under the panels even though the house was still quite open. Even now, with screens constantly open the house is 5 or more degrees cooler than the outside during the day and about the same warmer than outside at night. Probably the concrete slab floor has something to do with the overnight heat retention. Our walls are also SIP's, Rob's ProTec product. We couldn't be more pleased.