General Finishes offers a formidable array of eleven exterior products in its lineup, including 5 exterior topcoats, an exterior water-based stain, a durable premium paint, 3 primers and undercoats, and an outdoor oil for outdoor projects. These stains and finishes are suited for vertical surfaces such as fences, patio furniture, garage doors, and entrance doors. General Finishes coatings and stains are not recommended for large horizontal surfaces such as decks. And if your wood just needs a preservative treatment, try our Outdoor Oil. Note: do not apply Conversion Varnish over Milk Paint in an exterior project.