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Woodchucker 01-20-2009 01:24 PM

Tile flooring over heating element
I'm installing a tile floor in my bathroom. I would like to install in floor heating. The heating element will not go over the complete floor but the tile will cover most of it.

My question is; How do I ensure the the tile floor is even when there will be an uneven surface due to the under floor heating element? Do I just add more morture under the tiles without the heating element under it?

Ron6519 01-20-2009 05:55 PM

Are we entertaining the use of electrical infloor heating? If this is the case, you can float the thinset into the unheated sections giving you a somewhat consistant base. Tile is a relative installation as each unit will float on the thinset surface. Even on a relatively flat surface there will be oportunities for the floor to be uneven. Such is the adventure of tile.

Woodchucker 01-20-2009 06:47 PM


Thanks for the advise. I have layed down tile before, but I never installed the in-floor heating mat before. It seems to be relativley easy.

Thanks again for replying.


poppameth 01-21-2009 05:54 AM

Best way to get an even surface is to embed the element in a Self Leveling compound. That isn't always possible though. It depend on how level your floor is to begin with, what the subfloor is made of, etc.

Woodchucker 01-21-2009 11:14 AM

Tile floor over heating element

I have decided to install a 1/4" cement backer board over the plywood flooring. I will install the heating mat on top of this and use extra mortar to assist in leveling the tiles that won't have the heating mat under them.

Thanks for replying. :thumbup:


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