Our Kota blue limestone paving 900 x 600 is our largest size and much sought after, especially for those larger projects where these really can be shown for maximum impact giving you that "wow" factor. Never use an acid-based cleaner. On any natural limestone product either as a wash or to remove mortar stains.The chemical reaction resulting from acid being applied to a limestone product will permanently damage the surface of the stone. AB, DD, DG, EH, FK, G, GY, HS, IM, IV, JE, KA, KW, KY, ML, PA, PH, PO30-41, TD AND ZE. Please do not book any trades people until you have taken receipt of your full order. It is the customer's responsibility to inform us of any access problems before placing an order. Video will open in a new window.