Selecting the right adhesive is crucial for ensuring a lasting bond between the limestone tiles and the substrate. It's essential to choose a flexible, high-quality adhesive specifically designed for natural stone. This type of adhesive accommodates the natural movement of both the wall aEnsuring that grout is applied effectively is essential for achieving a professional finish on slate wall cladding. Before starting, it's crucial to mix the grout according to the manufacturer's instructions. The consistency should be smooth and not too thin. This balance will prevent it from running excessively, which can lead to unsightly messes. Using a float, apply the grout diagonally across the tiles to fill the joints effectively, ensuring that no air bubbles are trapped.nd the tiles, which is important in avoiding cracks or damage over time. Always read the manufacturer’s guidelines for compatibility and recommended setting times before proceeding, as different adhesives can have varying properties that may affect performance.