plastic finishes for wood decks- finishes for wood deck ,Finishes for Wood Decks | Professional Deck Builder | Finishes and . Figure 1. While traditional water-repelling clear finishes allow wood to gray from .. or pressure-treated woods is that no existing clear deck finish can protect wood from .. the substrate's colorUltimate Guide to Wood Finishes | SawsHubOil based wood finishes are popular because they penetrate the wood grain and enrich its color. However, they dry slowly, have a strong aroma, are toxic, and can be flammable or explosive. Therefore, you will want to wear a respirator to avoid breathing in the high levels of VOCs (volatile organic compounds) and dispose of used rags properly.