Super easy Outdoor wood finish that creates amazing results and lasts a long time. Superior quality and. Choose the best exterior stain or paint for your deck, siding, furniture and fence to match the look you want with the protection the wood needs. The Watco Exterior Wood Finish is an outdoor penetrating oil finish. It was bed ladder until when the first small streaks of separation from the spruce started to appear, and there was no peeling until early Some WRPs can be top coated with paint check the label and help to preserve the wood better than the paint. Mildew lives on organic materials like wood and turns it black. The best choice for exterior wood paint is acrylic latex. Mark September 13, 9: Though cost is not a guarantee of performance, top products are comparatively expensive. I have used it once and loved it.