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Radiant over sleepers

chuck shaw
chuck shaw Member Posts: 584
I looked at a job today, slab on grade, it is an existing home. Homeowner wants raidiant. I know I have seen photos, but would love to see them again. Installing heat transfer plates, over the slab, with sleepers. Can anyone dig up a photo or two, and post them.

Thanks in advance.

Chuck Shaw

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Comments

  • chuck shaw
    chuck shaw Member Posts: 584
    Ill ask again

    if anyone has photos, or has done a system like this could you let me know how you went about it. Transferplates?sleeper spacing? Insulating the slab? any information would be helpful.

    Thanks,

    Chuck

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  • Wayco Wayne
    Wayco Wayne Member Posts: 615
    Hey Chuck

    I'll get bqck to you tonight. I just did a job and may have pictures but they are still on my camera, which is in my work truck. I used Wirsbo joist track on top of a sub floor with 3/4 strips of plywood in between. Thermofin makes a U track plate that goes over the tubing and protects it from nails. I'll try to find those pics tonight. WW

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  • Michael_6
    Michael_6 Member Posts: 50
    over concrete

  • Dave H_2
    Dave H_2 Member Posts: 478
    Radiant-Trak on top

    Chuck-

    This project had a 1/2" ply put on top of the slab, vapor barrier and 3/8" Heat-Pex with Radiant-Trak space 8" on-center.

    Hardwood floor is the finished floor covering, so the gaps in between the wood is not a big deal.

    Rip all the ply beforehand into 7" strips by 4' long, or get the lumberyard to do that.

    Lay down the first Radiant-Trak, then wood, then trak.....you get the idea, then bang 'em down tight and nail the ply to hold it all together.

    Dave H
  • hr
    hr Member Posts: 6,106
    U fin works well

    for an application like this. This job had foam then plywood over the old slab. It's nice, but not necessary, to have the aluminum transfer right against the finish flooring. this carpenter even relieved the plywood strips to allow the plates to flush out.

    Radiant Engineering now overs Thin Fin at a better price. Same good grip with a bit thinner extrusion.

    hot rod

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  • hr
    hr Member Posts: 6,106
    Here is

    some Radiant Engineering U fin over a slab. This contractor even relieved the strips to allow a nice flush surface between the plate and strip. And routered a turn groove.

    Probably could have Warmboarded the floor for the same $$. But this was all site built. The addition above this had Warmboard. As you can see, we had to match an exisiting floor elevation.

    Using the U fin puts the transfer surface against the finish flooring and takes the plywood R-value out of the formula.

    Radiant Engineering now offers a Thin Fin, same great fit, with a bit less extrusion thickness.

    hot rod

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