Our master carpenter gives us a tip on hiding nails when shingling, while our general contractor builds a cedar and fir deck for the new back entry. Out on the front porch, our master carpenter begins replacing the old, ""wrong"" square columns with new round ones, choosing between polymer/fiberglass/marble columns and traditional wood ones. Going with the wooden ones, he primes them with alkyd, coats the interrior with a tripolymer sealant and uses vented, polyurethane caps and bases. Then we take a trip to the Jimmy Carter Habitat for Humanity Work Project in Winnipeg, Canada.