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drewdin 11-27-2012 07:45 AM

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Thanks for the info, the ceiling im trying to insulate is a porch that was turned into a sunroom. There are no soffits or attic, its more of a slanted roof off the back of my house.

@andyGump, I though the foam insulation acted like a vapor barrier and it should be under the insulation between the warm and cold zone?

Although its not the best picture, this is what I am in the process of insulating. My plans were to add insulation and then the foam. Do you recommend that I put the foam first and then the insulation? I live in Boston and its 20 degrees and snowing today, im trying to seal this up quick, thanks!

drewdin 11-27-2012 11:30 AM

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@nealtw, no the house roof is above and off to the side of this roof. Here is an outside side picture of the sunroom.

drewdin 11-27-2012 12:54 PM

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Hi Neal, this roof buts up against the side of my house, the air would have no where to travel if I had soffits and a path for the incoming air from the soffit to go other than the inside of the house.

maybe this picture is better. my soffits, ridge-vent and everything else are on the top roof, not the sunroom roof. Since the house is a colonial gambrel, those side panels you see are parts of the interior of the house.

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