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Ceramic tile over radiant in slab heat problems

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by ericjeeper, Mar 2, 2008.

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  1. slowzuki

    slowzuki Feeling the Heat

    Joined:
    Feb 1, 2007
    Messages:
    499
    Loc:
    New Brunswick, Canada
    If the concrete expanded the tiles would not pop up, the grout would break between them.

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  2. BrownianHeatingTech

    BrownianHeatingTech Minister of Fire

    Joined:
    Oct 5, 2007
    Messages:
    1,253
    Loc:
    Northwood, NH
    Yup, but you might not notice that. Then when the concrete shrank, the fractured grout would take up more space, and the tiles would pop.

    It's all theoretical, and nearly impossible to diagnose (especially remotely) due to the number of possible causes. The only remedy (short of re-doing the floor) is to do what has already been done.

    The only additional thing to do is to re-work the system as necessary, in order to supply the correct water temperature reliably.

    Joe
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