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How do I seal the open cells if I cut the PVC trimboard? Also, how do I clean PVC trimboards?
Jun 26, 2018



Handle PVC trim as you would a piece of premium lumber. Be careful not to damage the visible surface of the board. To seal cut edges or clean a cut edge that has gotten dirty, sand them with 320 grit sand paper, and then wipe the edges with Acetone—this will help to re-seal the cells.

To remove dirt and grime from the visible surface or edges of PVC trimboard, use Soft Scrub with Bleach, with a little water, a composite deck cleaner that has been found to clean cellular PVC trim. As with any new product, try the cleaner in an inconspicuous area before cleaning the trimboards on your project.