Guest User
8/19/2004
roof on our porch is metal......it sweats and "rains" on the porch. The porch does not have a ceiling, just the truss boards and metal roofing is screwed in. what would you recommend at this point to insulate? How close do you recommend the insulating material to be to the metal roof? Thank you for responding. Regina Page [email protected]
Guest User
8/20/2004
Ideally, above the insulation, you will have a minimum 1" vented space. Below the insulation, you need a vapor barrier.
Guest User
8/20/2004
Todd, thank you for responding. Does a vapor barrier mean a ceiling? If so, do we still need to use insulation between the metal roof and ceiling? Thank you.
Guest User
8/20/2004
A vapor barrier would be something that is impermeable to air and moisture. Typically, it is polyethylene sheeting. As long as the vapor barrier can be 100% "complete," with no holes in it, the insulation probably won't serve much of a purpose.
Guest User
8/22/2004
Thank you so much for responding to my questions. Your site and this forum are so helpful.
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