Jerry Lozier Posted February 18, 2014 Report Share Posted February 18, 2014 25 year old metal roof on shop. Visqueen is shot, Click to Enlarge 53.52 KB Click to Enlarge 26.99 KB My recommendation was a metal roof contractor remove metal and install vinyl face insulation batt (don't know what they call that type of insulation material) Anyone have experience with spray foam on inside in this situation as am concerned about with wood under the foam or will that ever be a trapped (moisture) problem if all is dry when applied?? Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted February 18, 2014 Report Share Posted February 18, 2014 That's corrugated. Foam it. There have been enough expansion cycles to elongate every penetration including the fasteners. Once that cover is removed it's scrap metal. ccSPF will stick as long as it is reasonably clean but the panels will oil can when the temps swing. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted February 18, 2014 Report Share Posted February 18, 2014 25 year old metal roof on shop. Visqueen is shot, My recommendation was a metal roof contractor remove metal and install vinyl face insulation batt (don't know what they call that type of insulation material) Anyone have experience with spray foam on inside in this situation as am concerned about with wood under the foam or will that ever be a trapped (moisture) problem if all is dry when applied?? Depends. What is it that they're hoping to achieve? Quote Link to comment Share on other sites More sharing options...
Jerry Lozier Posted February 19, 2014 Author Report Share Posted February 19, 2014 Tom, our temps are several weeks below freezing in winter to 110+ periodically thru out summer. Jim, cheapest route... lessen the condensation, enough heat loss through insulated ceiling to drip and evidence on sheetrock ceilings at eave side wall intersect Quote Link to comment Share on other sites More sharing options...
pmb Posted February 28, 2014 Report Share Posted February 28, 2014 Another option, remove metal, sheath with CDX plywood, apply roofing underlayment then reinstall metal. Quote Link to comment Share on other sites More sharing options...
David Meiland Posted February 28, 2014 Report Share Posted February 28, 2014 The real issue is air leakage through the ceiling into the attic. They might be able to solve the condensation by air-sealing the attic floor, and that might pay for itself in improved comfort and reduced heat loss. A sure approach is to remove the metal, install a solid deck, then re-install the metal over felt with new screws. I would not spend the money to foam 25-year-old metal. Quote Link to comment Share on other sites More sharing options...
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