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I have a 16 x 40 building that I am converting g into living quarters. It has a metal roof on top and a silver bubble layer under that. I was told this is a moisture barrier/condensation product. I want to add some type of insulation both in the "attic" portion which will have flat ceilings over the bed and bathrooms and in the great room where I plan to keep the pitched ceiling. Any suggestions?
It sounds like you do not have solid decking beneath the roofing? I recommend a vapor barrier behind your wall and ceiling coverings (drywall or other) as well as good ventilation in the attic if at all possible. You could then add the insulation of your choice to the attic floor.
Todd, I am not sure what "solid decking" is. The walls are already I slated with the pink fiberglass stuff. We will be using luan on the ceiling in great room. This photo is from early on, but I think you can see the current ceiling.
Solid decking beneath the metal roof panels would be something like plywood or even OSB. Metal roofs without solid decking can be very prone to condensation and, for a residence, I don't feel the reflective bubble wrap is adequate to protect against it. It might work for a larger building where there is more air volume and air flow and generally less moisture inside but I do not feel it's adequate for a residence.
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