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  1. #1
    Join Date
    Oct 2009
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    Default Insulating 2 layers of celiling in attic

    We have a 1908 House that was recently remodeled. A recent energy audit recommended more attic insulation. Currently there is a drywall ceiling in the house that is about one foot lower than the previous someone delapidated plaster ceiling. The remodeler insulated with cellulose on top of the old plaster ceiling(R19). The energy auditor said this dead space with no insulation between the two ceilings was a major issue. The only access to the area between the two roofs is a pull down attic ladder. First is the auditor correct? Second how can I insulate this space in a cost effective manner. We live in Chattanooga, TN where the winters are not very severe. Thanks.

  2. #2
    Join Date
    Aug 2007
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    Default Re: Insulating 2 layers of celiling in attic

    Quote Originally Posted by freight train View Post
    We have a 1908 House that was recently remodeled. A recent energy audit recommended more attic insulation. Currently there is a drywall ceiling in the house that is about one foot lower than the previous someone delapidated plaster ceiling. The remodeler insulated with cellulose on top of the old plaster ceiling(R19). The energy auditor said this dead space with no insulation between the two ceilings was a major issue. The only access to the area between the two roofs is a pull down attic ladder. First is the auditor correct? Second how can I insulate this space in a cost effective manner. We live in Chattanooga, TN where the winters are not very severe. Thanks.
    The R19 of cellulose is covering the original plaster ceiling on the attic side ?

    If so, this 1 foot space shouldn't be an issue since it's within the conditioned living space...... it's no different than having a " chase " .

    The critical area is the attic side of the old plaster ceiling for increasing the insulation. This prevents the heat loss into the attic during the winter and the heat gain from the attic into the living space during the warm seasons.

    The main thing is to ensure that any holes or gaps from the old plaster ceiling are covered and sealed to the attic space.

    Hope this helps.
    "" an ounce of perception -- a pound of obscure "
    - Rush

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