Outdoor wood sculptures require durable protection against weather, moisture, and UV rays to maintain their beauty and longevity. The most common types of wood carving sealants for outdoor use include:

1. Spar Urethane – A popular choice for its waterproof and UV-resistant properties, spar urethane forms a flexible, glossy finish that withstands temperature changes.

2. Linseed Oil – A natural option that penetrates deep into the wood, enhancing grain while providing moderate water resistance. Best when combined with wax for added protection.

3. Tung Oil – Another natural sealant that dries to a hard, water-resistant finish, ideal for intricate carvings needing a matte look.

4. Epoxy Resin – Provides a thick, durable coating that seals out moisture completely, often used for high-wear areas or sculptures in harsh climates.

5. Polyurethane Sealants – Available in water- and oil-based formulas, polyurethane offers strong protection with varying sheens (matte to glossy).

For best results, apply multiple thin coats and reapply annually to ensure long-term protection. Choose a sealant based on your sculpture’s exposure and desired finish.