I used the EB product that requires a coating of UV protection. It had a fabric backing and when the UV coating was painted on, the surface was not smooth as I wanted it to be.
I did not see the one step type. If the backing is smooth, white plastic type material, I would definitely go with that.
The fabric backed material holds mildew type crud and you really have to scrub to get it out/off.
Either product will be a leak stopper!
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