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-   -   Heated Floors Affecting Grout question (http://www.diychatroom.com/f5/heated-floors-affecting-grout-question-33099/)

Ted Uy 12-03-2008 03:24 PM

Heated Floors Affecting Grout question
 
I am considering putting in electric heated floors in a soon to be re-tiled bathroom. However, one store recently told me that when the heated floors heating element is turned on and off via a thermostat, that the grout will deteriorate. Is that true? Do others have any experience with this question? Thanks.

poppameth 12-03-2008 05:13 PM

I've never seen any sort of issue like that. The element is set in a concrete mix. Tile and grout doesn't expand and contract like wood does. I can't see why this would effect the grout. It's not like a freeze/thaw situation. If you are that worried about it use a grout Called Quartzlock. It's a quartz crystal suspended in an acrylic resin instead of your standard cement grouts. It's a bit more flexible than normal grout plus it's stain resistant.

Ted Uy 12-04-2008 09:48 AM

Heated Floor Grout Question
 
Thanks very much for your reply and suggestion.

Bud Cline 12-04-2008 02:16 PM

Quote:

However, one store recently told me that when the heated floors heating element is turned on and off via a thermostat, that the grout will deteriorate.
BALONEY!!!

I have dozens of heated floors under my belt and have never once had an issue with any of them. Regular cement grout works just fine. Bury the heat system in Self Levelling Compound and you won't have any worries.:)

Floorwizard 12-04-2008 03:01 PM

No doubt.
What wierd advice.....

sirusdoo 08-28-2009 12:12 PM

If only that were true
 
Quote:

Originally Posted by Bud Cline (Post 193804)
BALONEY!!!

I have dozens of heated floors under my belt and have never once had an issue with any of them. Regular cement grout works just fine. Bury the heat system in Self Levelling Compound and you won't have any worries.:)

Maybe you should of installed mine then. The contractor did a nice enough job and the heated floor isnt an issue - However all the grout began to crack after a few months with the first season change - it's all nearly broken now. The winters are fairly mild as well. So now I plan on doing it over myself - I will try the quartzlock.

BimmerRacer 08-28-2009 01:06 PM

Quote:

Originally Posted by sirusdoo (Post 320568)
Maybe you should of installed mine then. The contractor did a nice enough job and the heated floor isnt an issue - However all the grout began to crack after a few months with the first season change - it's all nearly broken now. The winters are fairly mild as well. So now I plan on doing it over myself - I will try the quartzlock.

Grout cracking likely has to do with your underlayment quality and structure and not your heated mats.

sirusdoo 08-28-2009 02:04 PM

That sounds worse
 
So you think the tile was laid on un-level floor?

BimmerRacer 08-28-2009 02:15 PM

No, I don't think that, but tile has specific requirements for underlayment and support structure as established by TCNA. My house, for example, didn't meet the requirements for stone, let alone for ceramic tile and I had to do a lot of work to get it there.

Good read
http://www.schluter.com/5138.aspx

Bud Cline 08-28-2009 04:44 PM

Your floor-heat-system IS NOT the cause of your cracking grout.:)

Quadfam4 08-28-2009 05:01 PM

must have been one of those HD guys giving advice again.

Bob Mariani 08-29-2009 06:57 AM

Home Depot gave bad advise? The issue is caused by too much deflection in the floor. As several posted correctly the grout and heat mats are not your problem.

Floorwizard 08-29-2009 12:45 PM

wow...old post brought back to life.....


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