Building with Rough-Sawn Lumber in Maine: What Am I Missing?

This is a homeowner's forum post, not settled news, so there's no update to report on outcomes yet. A person planning to build a new house in coastal Maine is asking for advice on using rough-sawn lumber — boards cut at a local sawmill rather than bought at a lumberyard, which come in slightly different sizes than standard "dimensional" lumber and aren't graded for strength the way store-bought wood is. The plan is a fairly small, energy-efficient house built with double-stud walls (two layers of studs with a gap between them for extra insulation) and prefabricated roof trusses designed to hold more insulation, using a local builder who has his own sawmill.

The person's goal is to rely on local materials and labor and avoid foam insulation, engineered lumber, and adhesives where possible. Maine's building code allows non-graded, locally milled lumber in home construction as long as someone qualified signs off on it, so that part isn't the sticking point here. The questions posted are practical ones about working with rough-sawn wood: how dry it needs to be before framing, how long to let it air-dry, whether to smooth a face or edge before use, how to handle boards that twist or bow, and what hardware and fasteners work best with non-standard lumber sizes.

For most homeowners this is background reading rather than something to act on. It's relevant mainly if you're planning new construction and considering locally milled lumber instead of standard store-bought framing wood, since building codes and lumber rules vary by state and by project.