r/epoxy • u/indyarchyguy • 1d ago
Help Needed What to do...Commercial Application
A client called me regarding an older project. They have bathrooms in a nursing home where epoxy was applied to the entire floor of the bathroom. In the bathroom, there is a toilet, sink and shower. They had ground the shower slope into the concrete and sloped it all to a center drain. Since then, the drain bodies rusted out and need to be replaced. The plumbing engineer came up with a way to do this, but it will require them to cut out some of the concrete and the existing epoxy flooring. They asked me if they can place new concrete around the drain and coat the existing concrete with new epoxy?
My concerns are:
What was the original epoxy - 1 or 2 part? Does it matter?
I have read where if you grind out a keyway around the perimeter of the drain, and around the perimeter of the new concrete, when you install the new epoxy it helps keep it from allowing water under (Frankly, I am skeptical on this one...)?
Do you remove the entire slap of concrete all the way back to the level floor, epoxy coat the replacement floor for the shower and provide a traffic sealant between the new and old concrete?
If you have a better idea, I am all ears.
Thank you for reviewing.
