I cleaned the area and the pvc board with isopropyl alcohol. Sanded the bottom of the pvc board with 100 grit and the deck under the pvc board. Cleaned again with isopropyl
Weighed down the pvc board with anchors as the Lexel cured
Takes about 5 days for Lexel to fully cure in the summer
That PVC board isn’t going anywhere—Lexel, once cured, adheres just as well as PL 5200, but much easier to remove in the future. It’s much more manageable and friendly to work with compared to 5200. Paints over well also.