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StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 7185
Experience:  Structural Engineer
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I have a concrete floor where it was previously acid stained

Customer Question

I have a concrete floor where it was previously acid stained and the finish kept coming off in isolated areas. I have since had a vinyl plank floor installed but now again in those isolated areas I have the vinyl plank lifting off and the glue is a liquid mess under those planks. The other planks are glued solid and have no issues. The moisture level is dry in the concrete plus it's on a suspended slab. But a inspector did a PH test and it's reading a PH level of 13. The PH level of 13 is only in the problem areas, the good areas are in a PH level of around 7. Do you have any ideas on what has caused this? Also any ideas on how to rectify this?
Submitted: 1 year ago.
Category: Structural Engineering
Expert:  StructuralEng replied 1 year ago.

At what depth were the pH levels taken?

Customer: replied 1 year ago.
Surface level
Expert:  StructuralEng replied 1 year ago.

It may just be that the acid never wore off the surface in one area. That's the most likely scenario.

Expert:  StructuralEng replied 1 year ago.

Hello. Do you have any other questions for me on this topic? If you could rate my answer, I would appreciate it.

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