ANNOUNCEMENT FROM DEBRA: After 40 years of providing information on toxic-free products, I am moving on to write about the next step beyond nontoxic. To continue my work, I’ve passed the torch to Lisa Powers, who will carry on with great enthusiasm. Learn more about Lisa here
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Question from Marilyn

I’m planning to redo a bathroom with an open shower. The contractor tells me it involves some kind of hot tar layer to make the floor water proof before laying tile. Do you know of a non-toxic option that meets California code?

Lisa’s Answer

 

I am not familiar with California code so you will need to work with your contractor on that.  I have used Hardibacker Board or another water-resistant cementitious board as an underlayment for the tile.  I recommend the book “Prescriptions for a Healthy Home, 3rd edition” for any building or remodel project that you have.

 

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