Ensuring the wooden slats on your outdoor benches are smooth is key to both comfort and longevity. The process begins with proper material selection. Opt for naturally durable woods like teak, cedar, or pressure-treated pine, which have a better starting grain.
The cornerstone of smoothness is meticulous sanding. Start with a coarse-grit sandpaper (like 80-grit) to remove major imperfections, splinters, and old finish. Always sand along the direction of the wood grain to avoid scratches. Progress through medium grits (120-grit) to finer grits (220-grit), each pass removing the scratches from the previous one. This gradual progression creates an exceptionally smooth surface. For intricate areas, use sanding blocks or detail sanders.
After sanding, remove all dust with a tack cloth or vacuum. The next critical step is applying a protective finish. A high-quality outdoor sealant, spar urethane, or penetrating oil will shield the wood from moisture and UV rays, preventing the grain from raising and becoming rough again. Apply multiple thin coats as directed, lightly sanding between coats with very fine sandpaper (e.g., 320-grit) for a glass-like feel.
Regular maintenance is your final safeguard. Clean the bench periodically with a mild soap solution and a soft brush. Inspect the finish annually; a light sanding and a fresh coat of sealant will keep the slats smooth and protected for years, ensuring your outdoor bench remains a comfortable and beautiful retreat.