Green Building Q&A: New Windows/Siding and Insulating
We are needing to install new windows (which we've purchased) with nailing flanges. We currently have steel siding and realized that there wouldn't be a great way to install the windows without taking siding off. The siding has come of fairly easily, but we've discovered two additional layers of siding under our steel siding, which has made it virtually impossible to properly install the new windows. We wondered if we could remove the 3 layers of siding (which would cause our soffits to be off) and add some insulation while building out the old sheathing by 1.5 or 2 inches. We live in rural Iowa and winters are windy where we live. My question is how can I best insulate this with foam board (if that's even a good option)? Or would it be better to forget the rigid insulation all together?