Roof Under Second-Floor Porch
My house has an uncovered second-floor porch on top of a first-floor bedroom, such that the traffic surface of the porch is actually the roof over that room. The roof surface is roll asphalt covered by the previous owner with green outdoor carpeting. I noticed some water staining on the bedroom ceiling after the “spring thaw” this year, so I pulled up the carpet to reveal extensive water damage all the way through the roof decking and even into a few of the joists. There was clear evidence of puncture / tearing damage to the roll roofing in many areas, apparently caused by chair legs, etc being ground into the hot, soft surface in the summertime. I want my replacement to be a serviceable traffic deck, while (obviously) still being a watertight roof, but I’m having trouble finding an “off the shelf” solution.
One idea I did have would be to simply put down a new roll roof, then attach furring strips over it and build a standard wood deck on top of those. This has the added benefit of allowing me to build a level deck over the pitched roof, and since I have to replace the entire surface anyway, dropping it down a couple inches to accommodate the extra thickness isn’t a problem. I would probably have to use plywood sheathing instead of OSB so it doesn’t get compressed between the furring and the joists, but other than that I honestly can’t see a drawback to this approach; nonetheless, it somehow seems “hokey” to me – has anyone else seen another way to handle this situation?
Last edited by smitty286; 06-13-2008 at 01:54 PM.