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Infloor Hydronic Questions

PG
PG Member Posts: 128
in THE MAIN WALL
Just some general questions. My 2nd floor sub-floor is lower then planned. Should I add wood sheeting underneath to build it up? Or just make the pour thicker (approx. 2"-3")? How would this effect operation, comfort, and effeciency? Any major differences between Rapid Floor, Thermafloor, or Gyp-Span? Any thoughts on hardwood finish floor.....I have existing red oak in old part of house which I'd prefer to match. Thanks Much!

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Comments

  • Constantin
    Constantin Member Posts: 3,796
    Thicker Pour = greater thermal mass...

    ...the more thermal mass, the slower the heating system will respond to changes, up or down in ambient temperatures. This can be good or bad, depending on how you intend to use the spaces.

    Plus, from the sound of it, you'd double the dead load of the sub-floor on the house framing. Better get it in writing from the structural engineer that's going to be OK...

    Other than that a thicker floor will probably also result in less noise transmission in the home. Just about any wood can be installed on top such a floor, as long as you take the proper precautions and can live with the idiosyncracies of certain species WRT humidity response, width of board, and the cut of the wood (quartersawn is preferable).
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