Extra Smooth Large-and-Heavy-Tile Mortar for Precise Installations

MAPEI Keraflex SG is a polymer-modified, standard-grade mortar engineered specifically for large-and-heavy tile and stone installations. Designed for use on floors, walls, and countertops, it delivers a smooth, creamy consistency that enhances control and precision during application.

Its extra-smooth texture helps installers achieve consistent coverage and a professional finish, making it a dependable choice for both residential and commercial tile projects.

Nonsag and Nonslump Performance for Vertical and Horizontal Surfaces

Keraflex SG is formulated to stay in place where you put it. Its nonsag formula supports large-format and heavy tile on walls, while the nonslump performance ensures stable placement on floors.

• Nonsag for wall applications

• Nonslump for floor installations

• Supports large-format and heavy tile or stone

• Suitable for countertops and vertical surfaces

This balanced performance minimizes tile movement and helps maintain alignment during installation.

Versatile Bonding Over Plywood and Membranes

Keraflex SG is suitable for use over plywood and a variety of specialty membranes, including uncoupling, crack-isolation, sound-reduction, and waterproofing systems. This versatility makes it an adaptable solution for modern tile assemblies.

• Compatible with approved plywood substrates

• Can be used over uncoupling membranes

• Suitable for crack-isolation and waterproofing systems

• Supports bond coats up to 1/2" (12 mm) in embedded thickness

Whether working on new construction or renovation, Keraflex SG offers the flexibility and reliability needed for complex installations.

Professional-Grade Solution for Large-Format Tile Projects

With its combination of smooth workability, strong adhesion, and stability under heavy tile, Keraflex SG is designed to meet the needs of professional installers while remaining accessible to skilled DIY users. It provides the performance required for large-format tile and stone installations across multiple surfaces.

From walls to floors to countertops, Keraflex SG helps ensure consistent, durable, and visually precise results.