To insure good adhesion, stay with the same brand of polyurethane.
There are commercial solvents that will roughen the slick surface and provide the proper tooth needed for good adhesion.
"But the challenge is to get good adhesion between the new tile and the old."
When making small features it is critical to have good adhesion.
A very "wet" coating is applied, ensuring good adhesion and flow-out.
EVA - ethylene-vinyl-acetate film with good adhesion to glass.
I was impressed by the good adhesion and grip of the Vibram soles, performing well even in wet and slippery conditions.
It should have a very good adhesion to the polyester cord, used as reinforcement.
Narrow, crisp, new, aggressive treads built for good adhesion and fast cornering on pavement.
Materials providing good adhesion are not necessarily good diffusion barriers and vice-versa.