General contractor Tom Silva shows host Kevin O'Connor how the red cedar sidewall shingles are installed in decorative courses, designed by architect Holly Cratsley, in a classic turn-of-the-century pattern. Tom shows Kevin the most complicated part of the job, braiding the shingles to cover both the outside and inside corners. Master carpenter Norm Abram uses a template and router to cut holes in the old barn door for the new windows. Kevin lends him a hand reinforcing the back of the door, and then setting the first window, which is inserted from the back, in order to maintain a low front profile. Plumbing and heating expert Richard Trethewey shows Kevin the compact wall-mounted condensing boiler that will save space, energy, and virtually eliminate boiler noise - it's quieter than most refrigerators. In Spring Green, Wisconsin, insulating glass expert Tom Kaiser shows Kevin how residential window glass is coated with silver for energy efficiency, then sandwiched together and injecte