PS42 XLP - Extra Large Heavy Tile Mortar —ANSI A118.11 Extra Large Porcelain, Ceramic, Ultra-Thin Stone Floor Tile Mortar

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PROFLEX® PRO-STICK 42 XLP is a unique polymer modified portland cement setting mortar for installing extra large porcelain, ceramic, ultra-thin stone floor tile. PROFLEX® PRO-STICK 42 XLP with it’s exceptionalfluid properties is the ideal adhesive for installing standard to ultra-thin, extra large tile and stone over a variety of substrates including tile over tile applications..


  • Freeze thaw stable
  • Exceptional fluid properties for maximum coverage.
  • Suitable for interior and exterior applications
  • Bonds to most surfaces
  • Superior adhesion for Extra Large Floor Tile

Typical Use

PRO-STICK 42 XLP easily provides maximum coverage of ultra-thin, extra large ceramic tile and stone on interior and exterior floor applications. It is recommended for absorptive, semi vitreous, vitreous tile and impervious ceramic tile such as porcelain tile and natural stone over properly prepared masonry, concrete, cement backer board, membranes and existing ceramic tile. PRO-STICK XLP is suitable for interior and exterior installations for both residential and commercial construction. It is recommended for use in the thin set installation method for vitreous tiles like porcelain over non-absorptive subfloors, and membranes.

ANSI 118.4 ANSI Requirements PS 42 XLP Results
Glazed Wall Tile, 48 hour shear >100 psi >260 psi
Impervious Mosaic, 28 day shear >200 psi >480 psi
LEED v3 NC VOC EQ Credit 4.1 PS 42 XLT Results
VOC <65 g/l 0 g/l



1/4” x 1/4” Square, 65 – 75 sq. ft. Ceramics, 1/2” x 1/2” Square, 55 – 65 sq. ft. , Quarry Tile, Rough Stone, 1/4″ x 3/8″ SQ-notch, Large Tile, Marble, Stone, 35 – 45 sq. ft.

Suitable Surfaces

Brick masonry, Cement backer board(1), Cement mortar beds, Cement plaster, Cement terrazzo, Concrete, Concrete masonry, Cutback adhesive(2), Exterior grade plywood(3), PROFLEX® Membranes, Existing tile, Post tension, Vinyl composition flooring(2)


50 lb. bag (22.7 kg.); 48 bags per pallet