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Should I dense pack my attic ceiling? Pros adn Cons?

kaczmap | Posted in Energy Efficiency and Durability on

Hi,

I need to re-roof my entire house including removing all of the sheathing.

I see this as an opportunity to re-insulate an attic bedroom.

One contractor recommends (he has great references) to re-roof and then use dense-pack cellulose to fill the void between the sheathing and attic ceiling with cellulose. I like the idea – it seems to maximize the r-value.

Should I be concerned about moisture?

I am wondering about doing this without an ariway to vent the space between the sheathing and the attic ceiling.

I’d apreciate any thoughts or other cost-effective options I should consider.

Thanks

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Replies

  1. AdrienneBurt | | #1

    Check out this paper on unvented roof assemblies. There are scenarios for all types of climates.
    http://www.buildingscience.com/documents/reports/rr-0108-unvented-roof-systems/view?topic=/resources/technical_resources

    Others may be able to answer your question, but would need to know where your house is.

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