How to Water-Seal a Picket Fence
- 1). Clean the picket fence with water and a scrub brush. Remove any flaking sealant from previous sealant applications with a paint scraper.
- 2). Smooth rough areas with 80-grit sandpaper. Sand wood in the direction of the grain.
- 3). Mix the sealant with a paint stirring stick until it is well-blended. Scrape the sides and bottom of the container to mix in all settled solids.
- 4). Paint all corners on the top and bottom of cross pieces and next to posts with a paintbrush. Create a border approximately 3 inches from the corners and other areas where the roller cannot reach.
- 5). Place the roller cover onto the roller frame. Fill the paint tray to the top of the bottom well with sealant.
- 6). Wet the roller cover with sealant and roll the sealant on all large, flat areas. Overlap the sealant applied with the paintbrush close to cross pieces and posts.
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