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One of the most popular home projects you’ll hear about these days is replacing or covering drywall walls with shiplap. This wooden sheathing was originally used for exterior construction but has recently become all the rage in interiors (thanks, Chip & Joanna!) Similar to a tongue-and-groove siding, shiplap has a special notch cut on its edges, causing the boards to rest on top of each other and overlap. This unique design allows them to self-space and fit together perfectly — keeping water from getting behind them. The finished look is simple, clean, and easy to maintain.