To weatherproof a wood sign, start by applying a wood sealer or primer to protect it from moisture. Use outdoor-grade paint for added protection. Once your design is finished, apply a polyurethane or varnish designed for exterior use to seal the wood. For extra durability, add multiple coats, ensuring each layer dries completely. Also, consider using UV-resistant finishes to prevent fading from sun exposure. Properly sealed wood signs can last outdoors for years without cracking, peeling, or warping.
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