SLC & Radiant Heat Flooring by Todd Groettum

Discussion in 'Article Discussion Forum' started by Jim McClain, Oct 15, 2006.

  1. Might someone else be able to help? My tile experience is, at this point limited to a tub surround, which went well. A floor with heat is all new to me.

    Thanks to whoever might be able to assist.

    Jerry S.
  2. stullis

    stullis Charter Member Senior Member

    Re: Discussion: SLC & Radiant Heat Flooring

    1. You read his article correctly and that is the way he does his. Standard procedure is to double prime wood subfloors. I do mine a little different. I get the area completely ready and then double prime the floor and THEN install the lath. Just work cleanly while putting the lath down. The problem with applying primer after the lath is down is the drying time needed because of the puddling that occurs.

    2. A quality cement based floor patch can be used to fill low areas. Ardex Feather Finish is one brand. Some will just use thinset. If you use enough SLC to fully embed the wires you shouldn't have to many low spots. Using enough allows the SLC to flow properly.

    3. I wouldn't put any sill seal along the tub. Just caulk the floor to tub joint well so the SLC doesn't flow/leak under the tub. Leave a small joint along the tub with your tile and use a matching grout colored caulk between the tub and tile.

    Ditra over the SLC is a good idea.
  3. Re: Discussion: SLC & Radiant Heat Flooring

    Thanks for the info. This stuff is scary when you do it the first time!

    Jerry S.

  4. stullis

    stullis Charter Member Senior Member

    Re: Discussion: SLC & Radiant Heat Flooring

    That's why you hire a pro. :yesss:
  5. Re: Discussion: SLC & Radiant Heat Flooring

    That certainly is always the preferred option, but sadly, not the one that I can afford. I must do what I can figure out how to do myself, and use a pro when there is no other option. I would much rather be fishing than tiling any day!!!

    Jerry S.
  6. stullis

    stullis Charter Member Senior Member

    And if you have a failure? Especially since you are adding infloor heat the cost and complexity of the install increases.

    You already more than doubled the cost with the infloor heat so $$ ain't that tight. ;)
  7. Jim McClain

    Jim McClain Owner/Founder Administrator

    I am sure none of us have a crystal ball that sees into the thought processes, let alone the pockets of our consumer members. We can guide them and encourage them to make good decisions, but we should stop short of badgering them. Ya think?
  8. Kman

    Kman Tile Expert I Support TFP Senior Member Published

    I've seen some DIY's that had better skills their first time than some "pros" out there. While SLC can be tricky, it's not impossible to wrangle the first time out. I would suggest that you have a helper to do your mixing if you have to mix more than one bag. A constant flow of SLC is what you're looking for.

    Also, have all of your prep work done before you even open the bag. Check and double check. Once it's mixed you need to get it on the floor immediately, and you have only a few minutes to make sure it's in place before it starts to set up.
  9. stullis

    stullis Charter Member Senior Member

    They come here for help they can certainly stand some objective thinking instead of believing the marketing BS given out by the big box stores and the half-truths spouted by the manufacturers and DIY TV shows .

    Anyone out there know of a "cheap" electric infloor heat system? I don't.
    Is this Diyer capable of doing the electrical hook up? Probably not, he will be calling an electrician.
    How about the needed equipment? By the time they buy or rent the tools how much in $$ did they stick into it?

    Can they do a good job? Yes they can but most times they don't.

    You add in the heat system and the SLC in this project, his risk factor and the economic consequence is pretty high to recommend a diyer attempt it.

    But hey good luck I still think you would be better off hiring a pro or pick a different product. :cool:
  10. Hey guys . . . thanks for your help, even though it appears to be somewhat reluctant. I too was a pro at what I did for a living, and was likewise always skeptical of someone thinking they could do professional work on their own the first time. I guess we'll just have to hope for a little luck and see how it comes out. I've done many projects myself, and all turned out good.
    FYI . . . the electrical is already in and yes, I have all of the tools to do the job. Also, this is a very small bathroom, so that makes it a bit easier to tackle. I ask questions of anyone who has the patience to answer before I start anything new. In this case, with your help, I think I have enough information to proceed. I know the DIY group costs you money, but it is a simple fact that there are lots of us out there who simply must figure out how to get it done ourselves or live without it. That's the bottom line . . . it's not a choice, it's what is.
    Last edited by a moderator: Sep 3, 2012
  11. stullis

    stullis Charter Member Senior Member

    As long as you are going in with your eyes wide open Jerry that is fine, too many Diyers don't.
    Sounds like you are well on your way, I do wish you a project well done. :)
  12. I think it will be OK. Besides your input, I've got detailed info from the Ditra people, the heating system people and a local tile store that specializes in helping the DIY group. At this point I think I've eliminated any discrepancies between experts, so I should be good to go.

    I'm sure something will come up once I actually start the final process. If so, at least I've got people who can answer those last-minute questions.

    Thanks once again.

    Jerry S.
    Last edited by a moderator: Sep 3, 2012

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