Kelmore’s Grout Flex15 is a highly flexible, polymer modified, fast setting, cementitious grout for walls and floors.

Available in a comprehensive range of popular colours, all complemented with a matching silicone, it is suitable for use in joints up to 15mm wide and offers built in mould resistance. This efflorescence free grout has been formulated to facilitate the wash off, enabling the grout to be left to firm up in the joints without concern of it being difficult to remove from the tile face, resulting in a functional, aesthetically pleasing full grout joint.

Grout Flex15 is suitable for interior and exterior use, in wet areas, including power showers, and in both domestic and commercial environments. Grout Flex15 has been manufactured to the highest of standards using unique technologies, extensive knowledge and outstanding raw materials. When compared to the production of traditional cementitious grouts, this results in a significant reduction in CO2 emissions.

Coverage:

The coverage will vary dependent on the size and thickness of the tile and the joint width. The following table provides an approximate coverage per 3kg bag of Grout Flex15 when used with a selection of different sized tiles:

Mixing:

Mix by volume approximately 3¼ parts powder to 1 part clean, cold water (a full 3kg bag of Grout Flex15 will require approximately 800ml to 850ml water). Pour the water into a clean bucket before gradually adding the powder. Mix thoroughly until a smooth, creamy, slump-free consistency is achieved. Allow the mixed grout to stand for 2 minutes then re-mix briefly before use. If mixing the grout using a mechanical paddle mixer, mix at low speeds so not to entrain air in the product.

Application:

Apply the mixed grout to the wall or floor using a grout float or squeegee. Work the grout into the joints until they are completely filled ensuring any surplus grout is removed from the tile face as work proceeds. When the grout has started to stiffen* in the joints, residues can be removed using a damp sponge. Ensure the sponge is damp, not wet, and that it is frequently rinsed out in clean water. When the grout has sufficiently hardened, any remaining grout haze can be removed using a dry, clean cloth.

*@20˚C, the grout in ceramic tiles will start to stiffen after approximately 20 minutes and in porcelain tiles after approximately 45 minutes.

Set Times and in Service Use:

At 20°C, Grout Flex15 will accept light foot traffic after 3 hours. It will reach its final set after 24 hours, and in dry areas normal service can commence. Showers must be left a minimum of 3 days after grouting before use. Whilst still allowing the product to air cure, external tiling must be protected from frost and rainfall for 48 hours. After completing installations on backgrounds incorporating underfloor heating, the heating system should not be run for 10 days. Following this period, the floor temperature must be gradually raised to its optimal operating temperature.

BS 5385, Parts 1-5: Grout Flex15 should be used in conjunction with work carried out under the British Standard Code of Practice for Wall and Floor Tiling.