Description ARDEX MG Natural Stone Tile Grout is suitable for grouting moisture-sensitive natural stone or marble wall or floor tile joints up to 8mm wide. The BS EN 13888 classification for ARDEX MG Natural Stone Tile Grout is CG2WA, an “improved cementitious grout with additional characteristics of reduced water absorption and high abrasion resistance”. The ARDEX MG powder, when mixed with water, produces a soft, creamy, easily worked mortar with good filling properties, enabling deep joints to be filled in one operation. The surface of the hardened grout has a textured finish and is not impervious. ARDEX MG Natural Stone Tile Grout is available in the following colours: White, Light Grey, Dark grey, Limestone and Sandstone. Use:Suitable for use with wall and floor tiling in dry and intermittently wet internal locations. Preparation:Ensure tiles are firmly fixed and joints are clean, free of dust, excess adhesive and bedding mortar, etc. Mix proportions:The mixing proportions by volume are approximately: 1 part water : 2½ parts ARDEX MG powder. 11kg of ARDEX MG requires approximately 3.4 litres of clean water. Mixing:To the required amount of clean water in a clean container, add the powder whilst stirring thoroughly until a creamy, slump-free, easily worked mortar is obtained. The mixed grout has a working time of 30 minutes at 20°C. Higher temperatures shorten the working time.Note: Some ceramic, vitrified, porcelain and natural stone tiles, or tiles with textured, matt glazed or porous surfaces, may be susceptible to surface discolouration during grouting. A trial application should be carried out to ascertain if discolouration is likely. Where necessary, particularly when using intense grout colours, apply a protective treatment to the tile face to ensure the grout is not retained in the surface porosity/texture of the tile. Guidance on the application of coloured grouts can be found in clause 6.5 of BS 5385-1: 2018. If in any doubt, please contact the tile manufacturer or distributor for information and advice. Where acid-based cleaning products are to be used on the hardened grout, we recommend that the product is first tested on the wetted grout before application, to ascertain the resistance of the colour/grout. Thorough rinsing off is required to remove any residues of the acidic cleaner to prevent discolouration/damage to the grouted joint. Application:Using a rubber squeegee or rubber backed trowel, work the mixed grout thoroughly into the joints ensuring they are completely filled. Excess grout should be removed as work proceeds, any residues left on the tile face can be removed by wiping off with a damp sponge between 15 and 30 minutes after application. The use of a fine mist from a suitable spray bottle will help in emulsifying the grout residues on the tile surface. Apply at temperatures above 5°C. Packaging:ARDEX MG Natural Stone Tile Grout is packed in paper sacks incorporating a polyethylene liner – net weight 11kg. Coverage: This will depend upon the natural stone size, joint width and depth and the Grout Coverage Figure, which for Ardex MG is 1.45. Use the grout calculator below to estimate the approximate grout requirements for square or rectangular tiles: Technical Data: Bulk density of powder: approximately 1.3kg/ltr Weight of fresh mortar: approximately 1.9kg/ltr Working time (200C): approximately 1/2 hour Walkability (200C): after approximately 1 1/2 hrs Product Datasheet Click here to view this product on the manufacturers website.
