Work on the Concord, Mass., barn conversion focuses on the sunroom (to be), where carpenter Norm Abram shows host Kevin O'Connor how to set 2 x 6 ft. sills on the new foundation, while contractor Tom Silva uses an excavator to dig holes for stair footings and landscaper Roger Cook protects a 100-year-old grapevine in the work zone. On “Ask This OId House,” projects include hiding utility boxes in front of a salt-box-style house and fixing a broken spray hose on a kitchen faucet.