Hi all, I live in an older (1840's vintage) timber frame house in central NY state. A recent energy a audit done on my somewhat leaky house recommended rim joist sealing as something I could do, though there weren't any real obvious problem areas found along the rim area. On the part of my house where there is a conventionally framed addition, I plan on sealing the rim joints with rigid insulation sealed in place with foam (great stuff) at the edges of the insulation. The rest of the house is where I need some advise. I'm worried that sealing in the 8"+ beams which are directly on the rubble foundation might be a recipe for rotting the sill as it won't be able to breath on the interior side. I have no desire to jack the house up and put a moisture barrier between the sill and foundation. My current plan is to just foam seal/caulk the joint between the sill and the sub-flooring above, and also the joints where the joists are rabbited into the beam, and skip covering the 8" sill beam. Is this the right way to approach this? Scott