Spalling is caused by the expansion of soluble salts..These can originate from the setting bed, improper drywall as well as alkaline cleaners.  I agree shower needs to be torn out and replaced.

On Mon, Jun 20, 2011 at 1:06 AM, Roger Konarski <> wrote:
Looking for comments on what’s causing the spalling in shower. Please look @ attached pictures. They are having this problem all over the shower. Just looking for what I can tell the homeowner. My opinion they shower needs to be tore out and rebuilt!



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Frederick M. Hueston PhD
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