06:58AM | 08/31/05
Member Since: 11/16/04
2 lifetime posts
I'm in a pickle - I installed acoustic cork on concrete slab as an underlayment. Over that is planned a radiant(mat) heater from warmly yours and then nice porcelain tile.

Problem is - tile guy is EXTREMELY concerned the cork will cause the thinset/grout to pop up over time.

The cork was put in to force more heat to the tiles vs. the concrete slab. Now I'm debating on whether I should tear out the cork before putting in the heater.

Has anyone worked with acoustic cork 1/4" thick and installed tile over it? Thoughts?


04:17PM | 08/31/05
Member Since: 07/03/05
283 lifetime posts
Not sure myself on that one Dave. Try contacting someone at the Tile Council of North America and see if they will have an answer. They test a lot of materials and have a good handle on what works well with what.


01:53PM | 01/05/10
Member Since: 02/02/08
7 lifetime posts
What did you end up doing about the tile floor. I am also considering putting in cork underlayment and would like to know what has happened since you posted in 2005 about your floor at

Anyone else with experience--I am interested in hearing it. I am looing at Acoustacork
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