I Would cover the area with high quality crack isolation membrane ( i.e. Peal and seal sheet membrane, reinstall using high quality while "flexible multi-purpose" white thinset. But chances are this may still have some future movement, but this is about as much prevention possible without risky sub floor work.

Scott Wilson

Sent from my iPad

On Sep 20, 2017, at 10:34 AM, Jeffrey Hammons <dustfreehouston@gmail.com> wrote:

On Wed, Sep 20, 2017 at 12:31 PM hectorcastillo <hectorcastillo@comcast.net> wrote:

What is the scope of your project?

Sent from my Verizon, Samsung Galaxy smartphone

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