Key Features
Key Features
> High-performance grey tile adhesive for wall and floor tiles
> Suitable for fixing ceramic, porcelain and natural stone tiles
> 20kg bag — professional trade size for larger projects
> Designed for internal use, ideal for bathrooms and kitchens
> Provides strong adhesion with reduced slip on vertical surfaces
> Compatible with underfloor heating installations
> Compatible with underfloor heating installations
> Long-lasting, durable bond
> Highly thixotropic for large-format and heavy tiles
> Extended open time for easier adjustment
Description
Description
Designed specifically for large-format tiles over 1200mm, Mapei Keraflex Maxi S1 Grey is a high-performance, flexible cementitious adhesive with no vertical slip and extended open time.
Its highly thixotropic formulation makes it particularly suitable for installing heavy and large-format tiles on vertical surfaces without sagging. Supplied as a grey powder composed of cement and finely graded sands, it contains a high quantity of synthetic resins and special performance additives developed in Mapei’s research laboratories.
Easy to work with and offering excellent adjustability time, Keraflex Maxi S1 hardens without appreciable shrinkage, delivering a durable and reliable bond for professional tiling projects.
Keraflex Maxi Grey Tile Adhesive

Product Details
Product Details
Key Features
Key Features
> High-performance grey tile adhesive for wall and floor tiles
> Suitable for fixing ceramic, porcelain and natural stone tiles
> 20kg bag — professional trade size for larger projects
> Designed for internal use, ideal for bathrooms and kitchens
> Provides strong adhesion with reduced slip on vertical surfaces
> Compatible with underfloor heating installations
> Compatible with underfloor heating installations
> Long-lasting, durable bond
> Highly thixotropic for large-format and heavy tiles
> Extended open time for easier adjustment
Description
Description
Designed specifically for large-format tiles over 1200mm, Mapei Keraflex Maxi S1 Grey is a high-performance, flexible cementitious adhesive with no vertical slip and extended open time.
Its highly thixotropic formulation makes it particularly suitable for installing heavy and large-format tiles on vertical surfaces without sagging. Supplied as a grey powder composed of cement and finely graded sands, it contains a high quantity of synthetic resins and special performance additives developed in Mapei’s research laboratories.
Easy to work with and offering excellent adjustability time, Keraflex Maxi S1 hardens without appreciable shrinkage, delivering a durable and reliable bond for professional tiling projects.







