Matching Silicone Colour is White Mapei Silicone Can be used for grouting interior/exterior residential and commercial floor and wall surfaces in dry and wet conditions. Can be used for grouting stone, slate, granite, stone agglomerates and most types of ceramic, ceramic mosaic, quarry, brick paver, porcelain, glass and clay tiles. For joint widths from 1.5mm to 25mm. Colour number 100 A 5kg bag of Ultracolour will grout approximately 15sqm of floor or wall tiles (200 x 200 x 10mm tiles). The above consumption is to be used as a guide only. For further information, please refer to the mapei grout calculator app.