Bostik Stoneflex Flexible White Thick & Thin Bed (Slow Set)

Bostik Stoneflex Flexible is a cement-based tile adhesive, specially designed for thin and thick bed applications up to 25mm. It is a strong, highly flexible and water resistant, suitable for fixing large format floor and wall tiles internally and externally on all types of substrate (including those subject to limited vibration or movement, i.e. WBP plywood overlay). Bostik Stoneflex is suitable for use with ceramics, natural stone and non-porous tiles, such as fully vitrified, glass and porcelain. Use with non-porous tiles eliminates the need for admixture, saving on time and money.

Key Features

• Coverage 1.8 kg / m² per millimetre bed thickness
• Setting time 24 hours
• Suitable for use with large format tiles, natural stone, porcelain & slate
• Polymer modified for use with porcelain and fully vitrified tiles
• Suitable for use with underfloor heating systems
• Suitable for use with WBP plywood overlay
• Suitable for internal and external use

Quality and Standards

Bostik Stoneflex conforms to EN 12004 C2TE

Instructions for use

• Ensure the surface is clean, firm, free of dust, dirt, oil and grease and completely dry (check the drying times of different substrates)
• Mix the product with clean cold water; 4.2 parts powder to 1 part water - until smooth, lump-free consistency achieved
• Using a notched trowel, apply the adhesive to the surface
  (The size of notched trowel chosen, depends on the tile size, the surface being tiled, the profile on the back of the tile and the degree of coverage required - check out our wide range of trowels)
• Comb to required bed thickness ensuring ribs all run in one direction
  (Note. if fixing tiles in wet environments, apply additional adhesive to the tile reverse)
• Fix the tiles before the adhesive forms a skin (typically 20 minutes at 20°C)
  (Note. if skin forms, remove adhesive and apply fresh layer)
• Press tile firmly into the ribs of the adhesive and into position, with slight twisting/sliding action to ensure optimum adhesive contact (can be adjusted after initial positioning)
• Ensure you have left adequate joint spaces between tiles for grouting
• Clean off surplus adhesive from tile face and between tile joints