Steri-Grout Grey 3kg

Bond It Steri-Grout Grey 3kg is a specially formulated, polymer-modified cement-based floor and wall tile grout engineered for professional and DIY tiling in moisture-prone environments. Designed for both interior and exterior use, it combines excellent adhesion with a built-in fungicide that actively inhibits black spot mould growth — making it the go-to mould-resistant grout for kitchens, bathrooms, and wet rooms across the UK.

Key Features and Specifications

• Composition: Polymer-modified, cement-based grout
• Colour: Grey
• Pack size: 3kg
• Joint width range: 2mm to 20mm
• Standard: Conforms to EN13888: CG2W (flexible, water-resistant cementitious grout)
• Mould resistance: Contains a strong fungicide to inhibit black spot mould growth
• Permeability: Low permeability with reduced dirt pick-up
• Pot life: Approximately 30–60 minutes at 20°C
• Mix ratio: Approximately 750ml clean water per 3kg bag
• Final set: 12–24 hours; light foot traffic after 12 hours; full traffic after 24–48 hours
• Temperature: Do not apply below 5°C
• Tile compatibility: Porcelain, ceramic, and fully vitrified tiles
• Location: Interior and exterior

Applications

• Bathroom and shower room wall and floor tiling
• Kitchen splashbacks and floor tiles
• Power shower enclosures and wet rooms
• Toilet and sanitary installation grouting
• Tiling over timber plyboards and heated sub-floors (underfloor heating compatible)
• Interior and exterior tiling projects requiring a flexible, water-resistant grout
• Porcelain and fully vitrified tile installations where superior adhesion is required

Why Choose This Product

Bond It Steri-Grout Grey 3kg meets the EN13888 CG2W standard, confirming its classification as a flexible, water-resistant grout — not just a basic cementitious product. The polymer modification resists cracking under limited movement and vibration, making it reliable over timber plyboards and heated sub-floors where lesser grouts fail. Its low permeability reduces long-term staining and maintenance, while the integrated fungicide delivers lasting mould protection without the need for additional treatments. Trusted by UK tiling trades and suitable for DIY use alike.

Delivery in and Around London

We deliver Bond It Steri-Grout Grey 3kg to addresses throughout London and the surrounding region, including inner boroughs such as Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas including Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities are welcome — contact us for bulk pricing and priority despatch options.