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SGM’s Large Format Tiles (LFT) Multi-Crete Mortar is a commercial polymer-modified latex-Portland cement mortar formulated for the installation of large-format ceramic, porcelain, and dimension stone (absorptive, semi-vitreous, and vitreous) tiles. LFT Multi-Crete may be used for either floors or walls in both interior or exterior applications where a latex-Portland cement mortar is required. LFT Multi-Crete’s non-slumping formula eliminates lippage and can be applied up to ¾ inch (19 mm) thick on horizontal applications.
INSTALLATION
SURFACE PREPARATION
MIXING
Add LFT Multi-Crete mortar powder to approximately 1½ gal (5.7 L) cool, clean potable water per 50 lbs. (22.7 kgs.) bag. Machine mixing with a slow speed drill and mixing paddle is preferred (250—350 RPM). Higher speeds are not recommended and will entrain air.
Mix the two components together thoroughly until smooth. The proper consistency is obtained when the mortar is applied with the notched trowel to the substrate and the ridges formed do not flow or slump. Allow the mortar to slake for five (5) minutes, and thenre-mix before use. Do not add any additional water, latex, or powder after the mortar has slaked. Re-mix mortar occasionally during useand discard after initial set in bucket.
APPLICATION
Installation procedures must conform to the TCNA Handbook and ANSI 108.5. All materials and effected areas should remain above 50°Fahrenheit / 10°C (fifty degrees Fahrenheit / ten degrees Celsius) or below 100°F / 38°C (100 degrees Fahrenheit / 38 degrees Celsius) 24-hours prior and 72-hours after placement. Apply mixed mortar liberally with the flat side of the trowel, using sufficient pressure to key into the substrate; then apply additional mortar with the notched edge of trowel leaving enough mortar to give 100 percent coverage with the back of the tile. Place tile while the surface is wet and tacky and spread mortar over an area no greater than can be covered with tile before the mortar skins over.
Place tiles with a twisting motion and beat lightly before the initial set takes place to fully embed in the mortar. Mortar that has formed a skin should be re-troweled before applying tile. Some tiles may require back buttering. During the setting of tile, it is recommended to periodically remove a tile and check to see that sufficient transfer of mortar is being attained. Mortar thickness should not exceed ¾ inch after beat in. Do not adjust tiles after they have been set more than ten (10) to fifteen (15) minutes. Thin-set mortar should not be used to level floor and fill in low spots in the flooring.
A ¼ inch gap shall be left around vertical abutments to allow for structural movement and filled with appropriate elastomeric sealant.
CLEANING
Water is all that is required to remove uncured mortar.
CURING AND GROUTING
Minimum cure is reached in 12—24 hours. Setting may vary according to atmospheric conditions. Normal grouting should be done 48 hours later.
COVERAGE
Approximately:
SHELF LIFE
Up to one (1) year from date of manufacture in an unopened properly stored container.
MAINTENANCE
None required.
CAUTION
Product is alkaline on contact with water. Use paddle for mixing to avoid splashing into eyes or contact with skin. During mixing or application avoid contact with eyes. In case of such contact, flood eyes repeatedly with water and CALL A PHYSICIAN. Wash thoroughly after handling and before smoking or eating. Do not take internally. CONTAINS FREE SILICA — DO NOT BREATHE DUST. Prolonged exposure to dust may cause delayed lung disease (Silicosis).
WARNING: Use NIOSH approved masks at all times to handle silica dust. KEEP OUT OF REACH OF CHILDREN.
Product Information Sheet – English
SDS: