Mapei UltraFlex LFT Gray Mortar (50 lb.)

Description

Mapei UltraFlex LFT Gray Mortar (50 lb.) is a professional-grade, polymer-modified thin-set mortar engineered for the installation of large-format tile, including porcelain, ceramic, and natural stone. Its advanced formulation provides exceptional adhesion, reduced slumping, and extended open time, making it ideal for challenging installations on walls and floors. UltraFlex LFT is suitable for interior and exterior applications, offering strong performance over concrete, cement backer board, and other approved substrates. Its high sag resistance allows for consistent placement of large-format tiles, ensuring a flat, professional finish with reduced adjustments. Trusted by flooring installers, UltraFlex LFT helps deliver high-quality, long-lasting tile installations.

Product Features:

• Polymer-enriched for high performance
• Nonsag formula for large-format tile and stone in wall applications
• Nonslump for large-format and heavy tile and stone in floor applications
• For thicker bond coats from 3/32″ to 1/2″ (2,5 to 12 mm)
• Smooth and creamy consistency makes it easy to apply
• For installation of ceramic and porcelain tile; cultured stone; quarry tile; pavers; Saltillo tile; and most types of marble, granite and natural stone

Suitable Substrates:

• Concrete (cured for at least 28 days)
• Masonry cement block, brick, cement mortar beds, render coats and leveling coats
• Cement backer units (CBUs) – see manufacturer’s installation guidelines
• Gypsum wallboard and plaster – interior walls in dry areas only (priming may be required)
• APA Group 1 and CANPLY 0121 exterior-grade plywood (interior, residential and light-commercial floors and countertops in dry conditions only)
• Properly prepared vinyl composition tile (VCT), vinyl and cutback residue (interior installations)
• Properly prepared existing ceramic and porcelain tile, quarry tile and pavers (interior and dry conditions only)
• MAPEI waterproofing, crack-isolation, sound-reduction and uncoupling membranes