DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   Flooring (
-   -   Tile over Tile over Radiant Heat (

ChloeHobbes 11-22-2012 12:09 AM

Tile over Tile over Radiant Heat
I just bought a home on a slab with radiant hot water heat. The floor is all tiled on one level - about 22 years old and showing age. Can I tile over the tile and what would be the effect on the radiant heat system efficiency? Our climate is pretty cold in winter.


oh'mike 11-22-2012 05:15 AM

Tile over tile can be done with a bit of prep and the correct modified thinset---

I doubt that the extra layer of tile will affect the heating noticably---you are adding thermal mass---

Is the existing tile set correctly? No loose or hollow tiles?

ChloeHobbes 11-22-2012 09:52 AM

Tile over Tile over Radiant Heat
The tiles all seem to be set correctly - there are chips around the edges, one "gouge" about 1 inch around, and a few cracks that are not lifting.

The tile store quoted $2/square foot to demolish, and at 1700 square feet of tile, I don't know if it's worth it. BUT, If we tile over tile, we still have to adjust doors, remove and adjust outdoor french and sliding doors to adjust height, raise 2 toilets (?), and whatever else needs adjusting. The cost of adjustments may make demolition seem cheap...???

oh'mike 11-22-2012 10:27 AM

That's not an unfair price---you will have a better install---if it's in the bank and you can spare it---I would recommend removing the old tile---

However---a safe install can be done over the top of good sound existing tile-----

ChloeHobbes 11-22-2012 10:32 AM

Tile over Tile over Radiant Heat
And thanks for your replies on T-Day.

All times are GMT -5. The time now is 12:57 AM.

User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.