Since it turned quite cold again and will snow while we lay subfloors in part of Christian's farmhouse, I helped off-load the extremely thick plywood boards individually into the garage barn from the delivery truck. Bill and Christian have been installing them at night after work, with a fire going in the wood stove. This weekend we will finish the work.
The 1 1/8" tongue and groove plywood boards are installed with a bead of "Locktite PL 3X Premium" caulk from "Home Depot" (chemically rubber based for expansion) laid down first on the beam joists to prevent any squeaking after installation. Christian got 3" deck screws to go into the massive cherry wood beams every 4" and caulk is applied to the tongue of each board.
Underneath, the new crawlspace is now home to the new air handler...gorgeous!