Shiplap walls are a type of wooden wall paneling characterized by their horizontal boards that fit together with a slight gap. This design allows for easy installation and creates a rustic, textured look. Traditionally used in barns and homes, shiplap has gained popularity in modern interior design for its versatility and charm. The boards are typically made from pine or cedar and can be left natural, painted, or stained to match various decor styles. Shiplap is often used in living rooms, kitchens, and even bathrooms, adding warmth and character to any space.