To ensure a successful installation, we recommend: to use a reinforced adhesive mortar suitable for natural stone, to check the flatness of the surface before installation, to distribute the stones of different sizes evenly for a harmonious result, and to plan for discreet stone-colored joints to highlight the nuances. To prolong the beauty of your walls, we highly recommend applying a protective water repellent after installation. This waterproofs the stone, preserves its natural colors, and makes maintenance easier over time. This product, sold per square meter, does not necessarily require a joint. Lovers of traditional materials, this wall covering is for you. For a jointless installation, it is recommended to allow 30% extra material to compensate for cuts, losses and any irregularities. For installation with joints, the joint width must be determined based on the spacing of the stones as observed on the pallet upon delivery