Bonding agent for PIA regrout job. I want 4th time to be the last. Tenant moving in.

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CanOfWorms

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I am going to use Kerapoxy over scraped up old grout. Is there a bonding agent I can apply first to insure good adhesion?
 

ImOld

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It's easy for an old guy like me to miss details but nowhere in these two threads do I see any reference to exactly what you are grouting.

Nor do I see what type of grout; sanded, unsanded, tint added, etc.

Your symptoms are classic old/exposed package of grout or incorrect mixing ratios, water/air temperature and water impurities.

In other words, not reading and understanding the directions, implicitly.

You keep mentioning something I didn't know still existed; tile store.

I recommend the Big Box stores as people here are aware. :p
 
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