Contractor Mark Dimeo uses a 30"" diamond blade to cut a new doorway into the existing basement foundation. Host Steve Thomas checks in with painting contractor Jim Clark to see how a new non-toxic chemical paint stripper is working on the multiple layers of exterior paint. Architect David Stirling and homeowner Kime Whittemore discuss strategies to deal with the house's asymmetric roof dormers. Then, Steve and Kim go shopping for the new addition's windows.