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Bob talks with Frank Palmeri and Suzanne Mitchell of Owens Corning about the basement finishing system that has just been installed in the Melrose, MA, home. Palmeri explains that the system is unique because of the use of a structural lineal made of PVC that snaps together without nails, screws, or fasteners. The system does not support moisture or mold growth because it is made of PVC and fiberglass. The wall panels are easily removed if the homeowner needs to get behind the wall. Mitchell explains the walls give great energy-saving benefits to the homeowner. Studies show an insulated basement can provide up to 25 percent savings to whole-home heating costs. Palmeri explains that the ceiling is suspended so that anything above the ceiling is easily accessible. Mitchell points out the ceiling also muffles up to 95 percent of sound, a handy feature in this home as the father is a professional musician. The deep-well window frame is made out of birch and set to fit the existing window frame. The trim is set to the window. Palmeri explains that the lighting units were installed by a licensed electrician and set according to the local building ordinances. A fire alarm and carbon monoxide detector were also installed. Bob explains that the staircase doesn’t meet contemporary codes so structural repair was required. Carpenter Cyrus Beasley of Sweenor Builders shows how a portion of the staircase is completely unsupported and requires a support post. Beasley applies building adhesive to the base of the post to ensure it will not slide or move. Decking screws are drilled in to completely fasten the post to the floor. Plywood is secured to the existing staircase treads to reinforce the structure. The plywood is secured using adhesive glue and decking screws. The treads are then secured to the risers using decking screws. This should add rigidity to the stairs. Bob notes the staircase is now secured and complete with wallboard and trim to marry the old staircase into the new basement system.