ZEP is a cheaper version of a product called PoliGlow. ?There are reports that it does not hold up as well as the true PoliGlow - which is the only one I have used. ?If properly applied PoliGlow can last 5-6 years, whereas the reports are that the ZEP may only last about half as long. ?
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The important thing for either one is the preparation process. ?Either product will "seal in" whatever dirt or blemishes are underneath it. So careful cleaning is vital. ?For either one, multiple coats are necessary, 3 at least, and 5 is better. Therefore it is a bit labor-intensive for the best outcome. ?At least with the PoliGlow, I can say that you can expect to not have to do it every year.?
