Anonymous asked 6/12/2010 I Am Putting A New Metal Roof Over An Existing Mobile Home Metal Roof. I Am Going To Build A Truss System With Purlins To Span The Existing Roof. There Will Be About A 12" Air Space. Do I Need A Vapor Barrier? In Montana We Get Snow But Not Humidity.
Anonymous asked 4/15/2008 When Building A Bird House, What Size Hole Do I Need For An Opening For A Finch?