2×4 Framed House

We just had a contractor build us a house. I brought a structural engineer in to be sure everything was ok. The engineer pointed out that the builder framed the exterior walls with 2×4 studs, 16 inches OC. He said it was ok, but told me that a good handful of new houses are built with 2x6s on the exterior walls. I was told by the engineer that our house will be fine. Does anyone know about this? I realize that 2x6s would have allowed for more insulation, but we used the Icynene which the company said was R-19, which is good.

By dssguy99 | 11/02/2009 5:39 PM