MAPEI Keraset: Professional Tile Adhesive for Versatile Applications

MAPEI Keraset is a high-performance, dry-set mortar designed for interior and exterior residential and light commercial tile installations. This versatile adhesive offers excellent bonding properties for a wide range of tile and stone applications on both floors and walls.

Features and Benefits:

Suitable for tile and stone installations on floors and walls
Enhanced performance when mixed with MAPEI Keraply
Meets or exceeds industry standards for bond strength
Contributes to LEED points for sustainable building projects

Applications: When mixed with water:

Ideal for most interior/exterior residential and light commercial floor and wall installations
Excellent for ceramic tile, quarry tile, pavers, Saltillo tile, and most types of marble, granite, and natural stone

When mixed with Keraply:

Suitable for all applications mentioned above
Recommended for exterior commercial installations
Ideal for porcelain tile installations
Appropriate for installations subject to prolonged water immersion
Performs well in areas subject to severe freeze/thaw conditions

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Limitations:

Installation temperature range: 40°F to 95°F (4°C to 35°C)
Not recommended for moisture-sensitive stone, agglomerate tiles, cultured marble, or resin-backed tiles
Use white mortar for light-colored stones and translucent marble
Not suitable for dimensionally unstable substrates

Suitable Substrates: When mixed with water:

Fully cured concrete (minimum 28 days)
Masonry cement block, brick, cement mortar beds, and leveling coats

When mixed with Keraply:

All substrates listed above
Cement backer units (CBU)
Gypsum wallboard and primed plaster (interior dry areas only)
APA and CANPLY Group 1 exterior-grade plywood (interior residential and light commercial dry conditions)
Properly prepared existing flooring materials
MAPEI waterproofing, crack-isolation, and sound-reduction membranes

Surface Preparation:

Ensure all substrates are structurally sound, stable, dry, clean, and free of any bond-inhibiting substances
Refer to MAPEI’s “Surface Preparation Requirements” document for detailed instructions

Mixing:

For water mixture: Use 5.5 to 6 U.S. qts. (5,50 to 5,68 L) of clean water per 50 lbs (22,7 kg) of Keraset powder
For Keraply mixture: Use 2 U.S. gals. (7,57 L) of Keraply per 50 lbs (22,7 kg) of Keraset powder
Mix to a smooth, homogenous, lump-free paste
Allow mixture to slake for 10 minutes, then remix before use

Application:

Apply mortar with a notched trowel, ensuring proper coverage
Key mortar into the substrate with the flat side of the trowel
Apply additional mortar with the notched side of the trowel
Place tiles firmly into the wet mortar, ensuring proper contact
Remove excess mortar from joint areas

Expansion and Control Joints:

Provide expansion and control joints as specified by industry standards
Do not cover expansion joints with mortar

Cleanup and Protection:

Clean tools and tile while mortar is fresh
Protect from traffic for 24 hours and heavy traffic for 7 days
Shield from frost and rain for 7 days

Technical Data:

ISO 13007 Classification: C1 (with water), C2ES1P1 (with Keraply)
ANSI Specifications: Exceeds A118.1 (with water), A118.4 and A118.11 (with Keraply)
Open time: 20 to 30 minutes
Pot life: > 2 hours
Time before grouting: 24 hours