Answer
Mar 11, 2021 - 12:20 PM
No. The penetrating waterproofer is formulated to go over raw exterior wood only.If your back porch is peeling paint, you will need to establish why that paint is coming off and deal with that issue first, Otherwise, you would just be putting a sealer over a precarious situation, and then the old paint and the sealer will come off together. If the previous paint is just old, you will need to scrape off all the loose parts, then prime and re-paint to keep the wood of your back porch protected from the elements. We have got a couple of exterior grade paints if you are interested.
