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  1. #1
    Join Date
    May 2009
    Posts
    1

    Default Ventilation/Insulation Quandry

    We have a small two story home (new construction). The front room on the bottom floor has one internal wall and three external, unshared walls. It receives direct light from the south. There is a working a/c vent in the room, however, the room always reflects the temperature outside more so than the temperature of the rest of the house. A separate partial attic with blown in insulation is above the room. We've confirmed the vent is working properly and there are no "leaks" in the window seal. We've also installed solar screens which has not helped. Is this an insulation problem? If so, what do we need to do to solve it? Is this something only a professional should handle? It's our baby's room so we're determined to correct quickly as the Texas heat moves in.

    Thanks in advance for any help.
    Last edited by marypop; 05-02-2009 at 01:04 PM.

  2. #2
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Ventilation/Insulation Quandry

    Difficult to pinpoint the exact problem(s).

    You mention this room has 3 exterior walls with a direct southern exposure and a window ( though not sure what exposure ) would be a tricky heat gain consideration. If the insulation within the walls and/or the attic is insufficient this would be a problem with contributing to heat gain.

    The " vent " works .... sounds like there is only one in this room. Possibly there isn't enough cubic feet per minute ( CFM ) being supplied through this vent. If this vent is furthest away from the HVAC unit it may be too small of a supply. This room may require a larger supply or 2 vents. Is there a return air vent located in this room to help with better circulation of the air?

    Bottom line .... sight unseen ... it could be an issue with insulation .... or air supply .... or both.

    You might consider calling in someone to perform an audit with an infrared camera to determine weak points for the insulation and to measure the air supply for this room ... based on the heat gain calculations.

    Perhaps an awning on the outside of this window may help with solar heat gain for this room.


    Just some thoughts.
    "" an ounce of perception -- a pound of obscure "
    - Rush

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