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sleeving radiant tubing

j_7 Member Posts: 1
1" it is; there's a straight line of sight between the floor & the manifold, maybe only need the last elbow where it turns up into the manifold...thanks alan


  • j_6
    j_6 Member Posts: 1
    sleeving radiant tubing

    manifold is about 50 feet away from the radiant floor and the supply/return tubing has to route thru a 10" concrete slab to the isolated room that is getting radiant floor heating/cooling

    the room will have a depressed concrete slab to accomodate 1.125" warmboard as a subfloor and the construction sequence will have the 10" slab complete 10 months before the warmboard & tubing can be installed

    can we install a 1" or 3/4" sleeve in the 10" slab so we come back in 10 months, install the warmboard & push (or pull) the 1/2" tubing thru the sleeve & back to the manifold to avoid a joint at the transition between the 10" slab & the depressed slab
  • Shouldn't be

    a problem, just make sure you provide enough room for all your loops, i.e. a 1" sleeve will only accomodate one piece of ½" tubing.

    If you've got a 10" slab, I'd use ABS or PVC pipe as the conduit.

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  • EJW
    EJW Member Posts: 321

    Just don't do it like this. :) EJW
  • Tombig_2
    Tombig_2 Member Posts: 231
    Pex Sleeve

    Of course you're going to use electric conduit fittings!! Two 45's instead of a 90 is a good idea but with only one bend a 90 should be ok. Push/pull with a rigid electrician's fish tape. Insulate the 1" is always a good idea.
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