Not sure how much grout you will need? Click here for Kelmore Flex 15 Grout Calculator

Kelmore's Grout Flex15 is a highly flexible, polymer modified, fast setting, cementitious wall and floor grout that can be used in joints up to 15mm wide.

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.

• Available in a range of popular colours, all complimented with a matching silicone
• Efflorescence-free
• Mould-resistant grout
• Easy to apply and wash off, delivering full, functional and aesthetically pleasing joints.
• Ideal for use with underfloor heating systems and offering exceptional durability in wet areas, such as power showers and swimming pools.
• Suitable for both interior and exterior use.
• Versatile and reliable, this grout is perfect for domestic and commercial applications.

Specification

• Classification: (EN 13888)CG2 WA
• Number of colours: 17
• Powder to water ratio (by volume): Approximately 3:1 (3 parts powder to 1 part water)
• Application temperature (air and background): ≥ 5˚C
• Joint width: 1mm to 15mm
• Pot life @ 20˚C: 40 minutes
• Set time @ 20˚C: 4 hours

Coverage
The coverage will vary dependent on the size and thickness of the tile and the joint width. The table below shows the coverage per 3kg and 10kg bag when used with tiles of various sizes. Please note: To allow accurate grout calculation, a coverage calculator is provided on our website www.kelmore.co.uk

Preparation
Ensure the adhesive has set sufficiently and the tiles are firmly fixed. The joints must be clean, free from contaminants, and clear of excess adhesive. When grouting very porous tiles, dampen the joints with clean water before applying the grout.

Mixing
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 remix briefly before use. If mixing the grout with a mechanical paddle mixer, use a low speed to avoid entraining 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. Once the grout begins to stiffen in the joints, use a damp sponge to remove any residues. Ensure the sponge is damp, not wet, and that it is frequently rinsed out in clean water. After the grout has sufficiently hardened, any remaining grout haze can be removed using a dry, clean cloth.

Set times and in-service use
At 20°C, Grout Flex15 will set after 4 hours, and in dry areas normal service can resume after 24 hours. Showers must not be used for at least 72 hours after grouting, and 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. Swimming pools should not be filled for at least 3 weeks after completion of the grouting.