Can I Remove Polyurethane From Tent And Replace With Silicone?

Can I Remove Polyurethane From Tent And Replace With Silicone? If some of the delaminated PU coating is more persistent and still adheres to the backpack, we have found that wiping with inexpensive white vinegar removes the delaminated PU coating with ease on nylon and polyester material with great success. How do you remove waterproof