Laticrete STRATA MAT XT Lightweight Uncoupling Membrane Underlayment Roll, 150 sq ft, 5/16" Thick for Ceramic Tile and Natural Stone for Applications Over Concrete for Interior Use, 9 Rolls Bundle

Product Features:

• High-Performance Uncoupling and Crack Isolation: Laticrete STRATA MAT XT is a professional-grade tile underlayment and uncoupling membrane that isolates the transmission of in-plane substrate cracks up to 1/8 in. (3 mm) in direct-bond applications. It helps prevent minor substrate movement and stress from transferring through ceramic tile, porcelain tile, glass tile, and natural stone installations while providing dependable support and load distribution.
• Vapor Management and Faster Mortar Drying: Integrated mortar hydration vents provide vapor management by accommodating moisture from beneath the tile covering. The vented structure also promotes faster thin-set mortar drying, helping installers complete projects efficiently and typically begin grouting within 16 to 24 hours, depending on the mortar, tile, jobsite conditions, and curing requirements.
• Instant Mortar Coverage Verification: The translucent tile membrane allows installers to visually monitor thin-set mortar coverage underneath the mat during installation. Properly embedded areas appear darker, making it easier to identify incomplete mortar contact, confirm consistent coverage, and create a securely bonded tile underlayment without repeatedly lifting the membrane.
• Enhanced Mechanical Mortar Bond: The patented raised-pattern design creates a strong mechanical connection between the STRATA MAT XT surface and the tile-setting mortar. Its circular cavities and mortar hydration vents are filled during tile installation, creating a reinforced mechanical bond that supports durable ceramic, porcelain, large-format tile, and dimension stone installations.
• Modified and Unmodified Mortar Compatibility: STRATA MAT XT is engineered to work with the appropriate modified or unmodified thin-set adhesive mortar when selected according to tile manufacturer requirements, project specifications, and industry standards. This versatility allows installers to choose a suitable mortar for porcelain tile, large and heavy tile, moisture-sensitive stone, and other approved floor tile applications.
• 5/16-Inch Profile for Smoother Floor Transitions: At approximately 5/16 in. (7.9 mm) thick, STRATA MAT XT helps create a more even transition between typical 1/4- to 3/8-inch-thick tile installations and adjacent 3/4-inch hardwood flooring. The elevated profile is useful for remodeling projects, mixed-flooring layouts, entryways, kitchens, and open-concept floor plans.
• Wide Range of Approved Substrates: This versatile floor underlayment membrane can be installed over properly prepared concrete, mortar beds, oriented strand board, exterior-glue plywood in interior applications, cement backer board, cement terrazzo, resilient flooring, expanded polystyrene, gypsum underlayment, and lightweight concrete. Substrates must be structurally sound and prepared according to Laticrete and industry requirements.
• Clear Layout Lines for Accurate Tile Placement: Chalk lines remain easy to see on the translucent membrane surface, helping professional tile installers establish straight reference lines, maintain proper tile alignment, and plan complex floor layouts before spreading the tile-setting mortar.
• Lightweight and Fast to Install: STRATA MAT XT is lightweight, easy to carry, simple to cut, and quick to install using standard tile-setting tools. Tile installation can begin immediately after the membrane has been properly embedded into the bonding mortar, helping contractors maintain an efficient workflow and reduce project downtime.
• Residential and Commercial Performance: Suitable for residential and commercial tile and stone flooring applications, STRATA MAT XT supports demanding floor assemblies and complies with applicable ASTM C627 and ANSI A118.12 performance standards. It is also suitable for qualifying interior non-industrial vehicle traffic installations over concrete when installed with the specified Laticrete materials and curing procedures.
• Professional LATICRETE System Compatibility: STRATA MAT XT can be incorporated into a complete Laticrete installation system using approved primers, mortars, waterproofing products, grouts, and accessories. Qualifying installations may be eligible for LATICRETE system warranties, including extended and Lifetime System Warranty options when all published requirements are satisfied.

Product Description:

Laticrete STRATA MAT XT is a high-performance uncoupling membrane, crack-isolation membrane, and vapor-management tile underlayment designed for ceramic tile, porcelain tile, glass tile, and dimension stone floor installations. Suitable for residential and commercial projects, this professional floor membrane creates a dependable underlayment layer between the finished tile covering and the supporting substrate. It provides the support and load distribution required for long-lasting tile and stone flooring while helping reduce the transfer of stresses caused by minor movement or cracking within the substrate.

STRATA MAT XT isolates the transmission of in-plane substrate cracks up to 1/8 in. (3 mm) when used in approved direct-bond applications. By separating the finished tile assembly from minor substrate movement, the uncoupling mat helps protect ceramic, porcelain, glass, and natural stone installations from stress that could otherwise transfer through the floor system. Its performance makes it a practical choice for professional tile contractors, remodelers, builders, flooring installers, and experienced DIY users completing new construction or renovation projects.

The membrane features a patented raised-pattern structure with integrated mortar hydration vents. These vents accommodate vapor and moisture from beneath the tile covering while promoting faster drying of the thin-set adhesive mortar. The vented design also creates a strong mechanical connection between the tile-setting mortar and the membrane surface. Depending on the selected mortar, tile type, tile size, curing requirements, and jobsite conditions, STRATA MAT XT will typically allow grouting within approximately 16 to 24 hours.

Its translucent construction provides instant mortar coverage verification during installation. Installers can see whether the fleece-backed membrane has been properly embedded into the bonding mortar because areas with sufficient mortar contact appear darker than areas that require additional bedding. This visual installation aid helps improve coverage consistency, reduce hidden voids, and support a secure bond between the membrane and substrate. Chalk layout lines also remain visible on the surface, helping installers maintain accurate tile alignment and organize straight, professional-looking floor layouts.

STRATA MAT XT is compatible with the appropriate modified and unmodified thin-set adhesive mortars when selected according to project specifications, tile manufacturer requirements, and recognized industry standards. This mortar flexibility allows installers to use suitable setting materials for ceramic tile, porcelain tile, large-format tile, large and heavy tile, glass tile, natural stone, and moisture-sensitive stone installations. The surface cavities and hydration vents are completely filled with mortar before the tile is set, creating a durable mechanical bond within the finished floor assembly.

At approximately 5/16 in. (7.9 mm) thick, STRATA MAT XT provides additional underlayment height for projects that require smoother transitions between different finished flooring materials. It can help create an even transition between typical 1/4- to 3/8-inch-thick tile and adjacent 3/4-inch hardwood flooring, making it especially useful for remodeling projects, kitchens, entryways, dining areas, open-concept rooms, and commercial spaces containing multiple flooring surfaces.

The membrane can be installed over a broad selection of properly prepared substrates, including concrete, mortar beds, cement backer board, cement terrazzo, oriented strand board, exterior-glue plywood in interior applications, resilient flooring, expanded polystyrene, gypsum underlayment, and lightweight concrete. The supporting surface must be structurally sound, clean, properly prepared, and suitable for the intended ceramic tile or stone installation.

Installation is efficient and can be completed with standard tile-setting tools. The membrane is embedded fabric-side down into an appropriate polymer-modified bonding mortar and pressed or rolled into place to establish complete contact. Once STRATA MAT XT has been properly installed, tile-setting mortar can be applied immediately, allowing the tile or stone installation to continue without waiting for the membrane bonding layer to cure separately.

STRATA MAT XT is supplied in a convenient 150 sq. ft. roll measuring approximately 45 inches wide by 40 feet long. Its lightweight roll format is easy to transport, measure, cut, position, and install across small renovations or larger professional flooring projects. The membrane supports ceramic, porcelain, glass tile, and stone measuring at least 2 x 2 inches, providing a dependable foundation for many residential and commercial tile floor designs.