How to make wooden doors waterproof?

Preservative wood (wood treated with preservative solution or paint) can be used as the material, or cold oil (especially when in direct contact with water) and other waterproof materials such as tiles, stones, metals or plastic steel can be applied to ordinary wood before construction. It is also one of the solutions to use non-wood materials as doors when necessary! If you need to make a wooden door in a bathroom or kitchen that often uses water, I suggest that you add a layer of moisture-proof mat behind the wooden door when you do it, and then raise the door cover by 5mm and glue it with glass, so that the water resistance will be much better!

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