1. Cellular PVC trim boards We used AZEK trim. Get two 12-foot 1x4s and four 12-foot 1x3s. If 1x3s aren't stocked, rip them from 1x4s and use the scrap for the ledges.
2. Cellular PVC beadboard Choose 5½-inch tongue-and-groove boards or similar.
3. Plywood and scrap 1x material
4. PVC adhesive Choose a clear glue with a slow setting time, such as AZEK adhesive.
5. 1-inch pan-head stainless-steel screws6. 1 5⁄8-inch trim-head stainless-steel screws
7. Spackling paste rated for outdoor use, such as CrackSHOT, to fill fastener holes.
8. Fine-grit sandpaper
9. Latex exterior paint For dark colors use a reflective paint, such as VinylSafe by Sherwin-Williams, so that the PVC won't warp in the heat.
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