Plywood is a brilliant material to work with. Compared to solid wood, it's much cheaper and more durable than chipboard or MDF, and plywood is visually pleasing enough to be used for furniture.
Plywood is made by glueing and compressing layers of veneers in opposite directions. This helps create a structurally strong board and helps keep the board as flat as possible.
Unlike other wood-based materials, plywood isn't fully waterproof. Still, the good news is that you can take steps to stave off moisture from penetrating the board, thereby giving your plywood furniture a longer life. You must seal your plywood, especially if used in high moisture areas such as bathrooms, kitchens, or outdoor use.
So, why should you waterproof plywood?