When asked about sanding before use, 1 answer said you must, another said no. Can you only sand spots where paint is peeling a bit?

Thank you for your question. For optimal results be sure the surface is free of all dirt, mildew stains, loose wood fibers, and other foreign matter. Surfaces must be sound and free of standing water. Remove loose splinters and replace severely damaged or rotting wood. Prepare previously stained or weathered surfaces with Cabot Problem-Solver Wood Cleaner, Wood Brightener, or Wood Strippers. On severely weathered surfaces, sanding may be required to completely remove all loose wood fibers. Fill larger cracks with an exterior wood filler. Allow new concrete or masonry surfaces to cure for 30 days before coating with DeckCorrect. Sincerely, Alex Cabot Customer Support