Every modular home I have been in have these larger than average gaps underneath all of the doors. I assume this gaps serves some purpose, but I cannot imagine what.

Many of the homes have smaller than normal return air ductwork. They are able to get around this because these homes are not built to regular "stick" built specifications; more so under mobile home specs, which are sub par in comparison. The reason there is a bigger gap is so that more air can flow under the doors, resulting in a more efficient heating/cooling system. Believe it or not, this actually makes up for the inadequacy of the smaller ductwork system.

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5 Comments für “Why do interior doors of modular homes have 2-3 inch gaps under them?”

  1. Marco sagt:

    it has to do with ac/heat ventilation.
    References :

  2. roadmaptoamerica sagt:

    Helps with ventilation.
    References :

  3. mobildik sagt:

    The spaces permit air to flow under the doors. Regular homes have RETURN AIR ducts and module/mobile homes do not. The spaces act as return air supplies. Makes your heat/cooling system run better and more efficient.
    References :

  4. Bill P sagt:

    So any carpet can be installed and the doors will not drag on it.
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  5. tim r sagt:

    Many of the homes have smaller than normal return air ductwork. They are able to get around this because these homes are not built to regular "stick" built specifications; more so under mobile home specs, which are sub par in comparison. The reason there is a bigger gap is so that more air can flow under the doors, resulting in a more efficient heating/cooling system. Believe it or not, this actually makes up for the inadequacy of the smaller ductwork system.
    References :
    certified home inspector

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