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Insulation of mobile home

rich78 | Posted in Energy Efficiency and Durability on

We are renovating a 1976 single wide trailer. We have removed all the interior wall and ceiling panels. Currently the walls have the pre-existing pink fiberglass insulation and the aluminum siding, on the ceiling there is the same insulation and then plastic sheeting. We would like to add additional insulation before we drywall. We have looked into double bubble foil insulation, but then read an article on here as to why that would not be advised. What is the best product to provide more insulation that would resist mold/moisture from developing? The trailer is in northern Michigan, so it can be quite cold and humid as well.

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  1. GBA Editor
    Martin Holladay | | #1

    This is a tough job you are tacking. A 1976 trailer is lightly built and poorly insulated.

    The best insulation for this job is closed-cell spray foam, because of the high R-value per inch, the ability to conform to different shapes, and the fact that the cured foam is both a vapor barrier and an air barrier.

    If you can't afford to use closed-cell spray foam, the next-best material would be some type of rigid foam, installed cut-and-cobble style (with attention to airtightness). For more information, see Cut-and-Cobble Insulation.

    Good luck!

    -- Martin Holladay

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