Mapei Keraflex Maxi High-Performance Low Dust Standard Set Flexible S1 Adhesive Grey 20kg

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- Standard Set S1

- Very low emission

- Highly Thixotropic 3-15mm

- Colour: Grey

- Size: 20kg

- Consumption: 1.2 kg/m² per mm of thickness.

£20.13 ex vat
£24.16 inc vat
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Using the calculator below, you can work out how much material you will need to get the job done. Please either enter your required area m2 or the width and length.

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This is a rough guide calculation provided in good faith, actual usage may vary, please allow for wastage when placing your order. Pro Tiler Ltd can't be held responsible for any under ordering.


High performance, deformable cementitious adhesive with extended open time and no vertical slip, for ceramic tiles with a very low emission level of VOC. Especially suitable for the installation of large-size porcelain tiles and natural stone.
Where To Use:
- Interior and exterior bonding, up to 15 mm bed depth, of ceramic tiles (single and double fired tiles, porcelain tiles, Klinker, terracotta, etc.) on uneven substrates and renders, without having to level beforehand.
- Interior and exterior bonding of stone materials (provided that they are not sensitive to moisture).
- Spot bonding of insulating material such as expanded polystyrene, rock and glass wool, Eraclit® (wood cement panels), sound deadening panels, cork, etc. 
Application Examples:
- Bonding ceramic tiles (double-fired, single-fired, porcelain tiles, klinker etc.) and stone materials (provided that they are not sensitive to moisture) on conventional substrates such as:
~ Cementitious screeds and underfloor heating installations
~ Cementitious renders or lime and cement-based mortar
~ Gypsum board as long as firmly fixed
- Tilling to timber where it’s screw fixed and rigid.
- Ceramic and natural stone tiles on existing flooring (ceramic, marble, etc.).
- Installation of floors subjected to heavy traffic.
- Installation of floor and wall coverings on substrates waterproofed with Mapelastic.
- Interior and exterior bonding of tiles or strips (porcelain tiles, Klinker, single-fired, terracotta) with highly profiled ribs or lugs.

- Standard Set S1
- Very low emission
- Highly Thixotropic 3-15mm
- Consumption: 1.2 kg/m² per mm of thickness
- Waiting time before grouting:
~ On walls: 4-8 hours
~ On floors: 24 hours
- Perfect adherence to all materials normally used in building
- Hardens, even when very thickly applied,with minimal shrinkage
- Low viscosity, therefore easily workable.

- Type: powder
- Available Colours: grey, white
- Bulk mass density (kg/m³): 1400
- Dry solid content (%): 100
- EMICODE: EC1 R Plus - very low emission
- Mixing ratio: 
~ 100 parts Keraflex Maxi S1 grey with 25-27 parts water by weight
~ 100 parts Keraflex Maxi S1 white with 26-28 parts water by weight
- Consistency of mix: Creamy paste
- Mass density of the mix (kg/m³): 1500
- pH of mix: over 12
- Pot life: over 8 hours
- Application temperature: from +5°C to +35°C
- Open time (according to EN1346): > 30 minutes
- Adjustability time: approx. 60 minutes
- Ready for grouting on walls: after 4-8 hours
- Ready for grouting on floors: after 24 hours
- Set to light foot traffic: 24 hours
- Ready for use: 14 days