If you are right in your assumptions? Oil based things, with exceptions, cannot stick to water based---usually acrylic underneath.
There is another possibility here though. Someone may have sprayed the last layer with something like Thompson's Water Seal which has wax in it.
Good news? If the top layer is all coming up?
Powerwash it and see what you have with that peeling layer out of the way.
There is another possibility here though. Someone may have sprayed the last layer with something like Thompson's Water Seal which has wax in it.
Good news? If the top layer is all coming up?
Powerwash it and see what you have with that peeling layer out of the way.