I am rebuilding the 9' x 40' front porch of my 1890 house. I plan to use tongue and groove flooring and keep the traditional painted look, although staining is an option. At my lumber yard, T&G Douglas fir and T&G mahogany cost the same. (The mahogany is Phillipine mahogany.) I have to decide which to use - questions of paint adhesion and moisture resistance. The porch is covered so it doesn't get direct sunlight but it does get wet on the outer portions in the rain. I'm open to suggestions. From reading this forum I get the impression that many prefer stain to paint on a front porch even though a painted porch is more traditional. I do plan to prime all sides of the tongue and groove boards before nailing them. Any advice, particularly experience with Phillipine mahogany, would be appreciated.