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PRODUCT DESCRIPTION LATICRETE 4-XLT is a multi-use, polymer fortified adhesive mortar built on the new LATICRETE Water Dispersion Technology™ (WDT) platform. WDT provides for the complete dispersion of water within the mix allowing users to achieve the desired application consistency. LATICRETE 4-XLT offers tremendous utility including non-sag wall installations, medium bed build up of […]
LATICRETE 4-XLT is a multi-use, polymer fortified adhesive mortar built on the new LATICRETE Water Dispersion Technology™ (WDT) platform. WDT provides for the complete dispersion of water within the mix allowing users to achieve the desired application consistency. LATICRETE 4-XLT offers tremendous utility including non-sag wall installations, medium bed build up of up to 3/4″ (19 mm) and thin-set applications of floors. In addition, LATICRETE 4-XLT is the first product from LATICRETE to come incorporated with the new LATICRETE DUST LOCK™ Technology. This unique way of manufacturing our adhesives incorporated with LATICRETE plastic packaging dramatically reduces mess both during transportation of the product as well as during mixing..
For wall installations of interior and exterior ceramic tile, porcelain tile and stone.
Can be used as a medium bed mortar for flooring installations.
Ideal for most types of thin-set flooring applications.
Incredible non-sag performance, including large and heavy tile.
Excellent medium bed performance, 3/4″ (19 mm) thick without shrinkage.
Utilizes Water Dispersion Technology allowing for different mortar consistencies.
LATICRETE DUST LOCK Technology dramatically reduces mess both during transportation of the product as well as during mixing.
Smooth and Creamy consistency
“Extra Heavy” rating per ASTM C627
Exceeds ANSI A118.4 and 118.11 Shear Bond Strength
Bonds to many suitable substrates.
Exterior glue plywood*
Ceramic tile and stone
Cement backer board**
Brick and concrete masonry
Non-water soluble cut-back adhesive
* Interior use only.
** Consult cement backer board manufacturer for specific installation recommendations and to verify acceptability for exterior use.
50 lb (22.7 kg) bag
Colors: Grey and White
Factory sealed containers of this product are guaranteed to be of first quality for one (1) year* if stored off the ground in a dry area.
* High humidity will reduce the shelf life of bagged product.
Not for use directly over OSB, particle board, luan, Masonite ® or hardwood floors.
For veneer installations using this product, consult local building code requirements regarding limitations and installation system specifications.
Not for use over VAT, VCT, vinyl and plastic laminates.
Adhesives/mastics, mortars and grouts for ceramic tile, pavers, brick and stone are not replacements for waterproofing membranes. When a waterproofing membrane is required, use a LATICRETE® waterproofing membrane (see Section 10 FILING SYSTEM).
Not for use in submerged applications. For these applications, use LATICRETE® 254 Platinum.
Note: Surfaces must be structurally sound, stable and rigid enough to support ceramic/stone tile, thin brick and similar finishes. Substrate deflection under all live, dead and impact loads, including concentrated loads, must not exceed L/360 for thin bed ceramic tile/brick installations or L/480 for thin bed stone installations where L=span length (except where local building codes specify more stringent deflection requirements)
Consult MSDS for more safety information.
Some marbles and other stones have low flexural strength and might not be suitable for installation over wood floors.
Use LATAPOXY®300 Adhesive for installing green marble or water sensitive stone and agglomerates, and resin backed tiles and stones.
During cold weather, protect finished work from traffic until fully cured.
Contains portland cement and silica sand. May irritate eyes and skin. Avoid contact with eyes or prolonged contact with skin. In case of contact, flush thoroughly with water.
DO NOT take internally. Silica sand may cause cancer or serious lung problems. Avoid breathing dust. Wear a respirator in dusty areas.
For white and light-colored stones, use LATICRETE® 4-XLT (white).
Keep out of reach of children.
All surfaces should be between 40°F (4°C) and 90°F (32°C) and structurally sound, clean and free of all dirt, oil, grease, paint, concrete sealers or curing compounds. Rough or uneven concrete surfaces should be made smooth with a LATICRETE latex fortified underlayment or leveling mortar to provide a proper finish. Dry, dusty concrete slabs or masonry should be dampened and excess water swept off. Installation may be made on a damp surface. New concrete slabs shall be damp cured and 28 days old before application. All slabs must be plumb and true to within 1/4″ (6 mm) in 10 ft (3 m). Expansion joints shall be provided through the tile work from all construction or expansion joints in the substrate. Follow ANSI specification A108.01-3.7“Requirements For Movement Joints: Preparations by Other Trades” or TCNA detail EJ-171 “Movement Joints–Vertical & Horizontal”. Do not cover expansion joints with mortar.
1. Installer must verify that deflection under all live, dead and impact loads of interior plywood floors does not exceed industry standards of L/360 for ceramic tile and brick or L/480 for stone installations where L=span length.
2. Minimum construction for interior plywood floors.
SUBFLOOR: 5/8″ (15 mm) thick exterior glue plywood, either plain with all sheet edges blocked or tongue and groove, over bridged joints spaced 16″ (400 mm) o.c. maximum; fasten plywood 6″ (150 mm) o.c. along sheet ends and 8″ (200 mm) o.c. along intermediate supports with 8d ring-shank, coated or hot dip galvanized nails (or screws); allow 1/8″ (3 mm) between sheet ends and 1/4″ (6 mm) between sheet edges at the perimeter; all sheet ends must be supported by a framing member; glue sheets to joints with construction adhesive.
UNDERLAYMENT: 5/8″ (15 mm) thick exterior glue plywood fastened 6″ (150 mm) o.c. along sheet ends and 8″ (200 mm) o.c. in the panel field (both directions) with 8d ring shank, coated or hot dip galvanized nails (or screws); allow 1/8″ (3 mm) to 1/4″ (6 mm) between sheets and 1/4″ (6 mm) between sheet edges and any abutting surfaces; offset underlayment joints from joints in subfloor and stagger joints between sheet ends; glue underlayment to subfloor with construction adhesive. Refer to Technical Data Sheet 152 “Bonding Ceramic Tile, Stone or Brick Over Wood Floors”.
Mixing—50 lb (22.7 kg) bag
For Walls and Medium Bed Applications
Place 5.25 qts (5 ℓ) of clean water in a pail and slowly add the entire bag of LATICRETE 4-XLT. Mix with slow speed mixer for one minute, a noticeable change will occur when the mix transforms from what appears to be dry consistency to a usable consistency. DO NOT temper with water. Allow to slake for 5 minutes, remix and use. Job site conditions might vary. Add slightly more water within five (5) minutes of completing second mix only to achieve the desired consistency (if necessary). Prior to the water dispersing action taking affect for wall and medium bed applications, mix may seem dry. Dependent upon the strength of the power mixer being utilized, it may be necessary to mix only 1/2 of a bag (25 lbs / 11.4 kg) at one time.
For Thin Bed Applications
Place 6 qts (5.7 ℓ) of clean water in a pail and slowly add the entire bag of LATICRETE® 4-XLT. Mix with slow speed mixer for one minute or until a creamy smooth consistency is reached. Allow to slake for 5 minutes, remix and use.
Key materials into substrate thoroughly. Comb on additional mortar with the notched side, use 1/4″ x 3/8″ (6 mm x 9 mm) notched trowel. Back butter all tile and stone 8″ x 8″ (200 mm x 200 mm) or larger to provide full bedding of the veneer.
Note: Use proper sized notched trowel to ensure full bedding of the tile. Spread only enough mortar that can be covered with tile within 15–20 minutes. Place tile and beat in with rubber mallet to embed. Adjust as necessary. Check mortar for complete coverage by periodically removing a tile and inspecting the transfer onto the back of the tile. The size and weight of the veneer will vary. Conduct a small test area for non-sag performance. Due to job site conditions and differences in finish material types; ledger boards, shims, wedges or spacers may be required to maintain finish levels and heights.
Key the mortar to the substrate with the flat side of the trowel. Press firmly to work into the surface. Comb on additional mortar with the notched side. Use 1/2″ x 1/2″ (12 mm x 12 mm) or 3/4″ (18 mm) half loop trowel.
Note: Use the proper sized notched trowel to ensure full bedding of the tile. Spread as much mortar as can be covered with tile in 15–20 minutes. Back butter large tiles 8″ x 8″ (200 mm x 200 mm) to provide full bedding and firm support. Place tile into wet sticky mortar and beat in using a beating block and rubber mallet to embed tile and adjust until level. Check mortar for complete coverage by periodically removing a tile and inspecting bedding mortar transfer onto back of tile. If mortar is skinned over (not sticky), remove and replace with fresh mortar.
Grout installation after a minimum of 24 hours curing time at 70°F (21°C). Grout with LATICRETE® SpectraLOCK®† PRO Grout, LATICRETE PermaColor™ Grout^ mixed with water or LATICRETE 1500 Sanded Grout or LATICRETE 1600 Unsanded Grout gauged with LATICRETE 1776 Grout Enhancer or with water.
†United States Invention Patent No.: 6881768 (and other Patents)
^ United States Invention Patent No.: 6784229 B2 (and other Patents)
Clean tools with water.