Tommy lays down mahogany flooring on the new front porch, adhering to a special layout called for by the architect. Homeowner Katherine and interior designer Amanda meet with lighting designer Susan Arnold to select new modern fixtures inspired by so... (more)me existing fixtures already in the house. Tommy explains the difference between open- and closed-cell foam insulation and applies both to solve the ice dam issues throughout the house. Richard learns about the two new gas fireplaces as they're installed on the first floor. Tommy shows Kevin how to lay out and install the shingles on the front porch roof.