I am thinking of adding solar hot water heat to the house someday, and I was
wondering how I go about determining what kind of weight my roof can
support? The house is a truss frame construction. There is a set of
horizontal joists for the sheetrock, then a set at about a 30 degree angle,
and then another set at maybe an 80 degree angle. All of this is framed with
2x3's not 2x4's.