Ardex MRF Water Resistant Rapid-Drying, Cement Based Skimcoat Patching Flooring Underlayment 10 Lb for Ceramic Tile Natural Stone Tile, Weatherproof Technology for Indoor Outdoor Use (4 Bags Bundle)

Product Features:

• Rapid-Drying Performance: Install floor coverings in as little as 30 minutes, reducing downtime and accelerating project completion for professional and DIY flooring jobs.
• 100% Moisture Resistance: Engineered to withstand 100% RH and unlimited moisture exposure, ideal for wet areas like showers, pools, kitchens, and spas.
• WeatherProof Technology: Advanced formulation supports interior and exterior use, ensuring durability and consistent performance in changing environments.
• Smooth Surface Finish: Creates a flawless, level substrate for adhesives and flooring, improving final installation quality and long-term durability.
• Featheredge Application: Non-sanded formula allows true featheredge to 1/2 inch thickness for seamless patching, repairs, and surface leveling.
• Wide Substrate Compatibility: Bonds to concrete, plywood, gypsum, terrazzo, glass, tile, AAC, and more for maximum flexibility across projects.
• Easy Trowel Application: Trowel-grade consistency ensures smooth spreading, strong adhesion, and efficient installation for contractors and DIY users.
• Cold Temperature Use: Suitable for installation in temperatures as low as 40°F (5°C), extending usability across varying jobsite conditions.
• Versatile Flooring Support: Ideal under ceramic, porcelain, stone, vinyl, carpet, and other flooring systems using moisture-resistant adhesives.
• Professional-Grade Bundle: Includes four 10 lb bags for extended coverage, making it perfect for larger repairs, renovations, and flooring preparation projects.
  

Product Description:

The ARDEX MRF Moisture-Resistant Rapid-Drying Skimcoat Patching Underlayment from ARDEX is a high-performance, professional-grade flooring preparation solution engineered for speed, durability, and precision. This 4-bag bundle is ideal for contractors and serious DIY users looking to complete larger flooring projects efficiently while maintaining consistent, high-quality results. Formulated from a blend of Portland cement and advanced hydraulic cements, it delivers a smooth, durable surface that serves as the perfect foundation for adhesives and finished flooring systems.

Designed with advanced moisture-resistant technology, ARDEX MRF is capable of withstanding 100% relative humidity and unlimited moisture exposure without compromising performance. This makes it an excellent choice for wet and high-humidity environments such as showers, bathrooms, kitchens, swimming pools, steam rooms, spas, and hot tub surrounds. Its water damage resistance helps protect substrates from leaks and long-term moisture issues, making it a reliable solution for both residential and commercial wet area applications.

One of the most valuable advantages of ARDEX MRF is its rapid-drying capability, allowing most floor coverings to be installed in as little as 30 minutes after application. This dramatically reduces project timelines and minimizes downtime, which is especially beneficial for time-sensitive renovations and commercial installations. The non-sanded, trowel-grade formula allows for seamless application from a true featheredge up to 1/2 inch thickness, making it ideal for surface leveling, crack repair, patching, and smoothing uneven substrates.

This underlayment is highly versatile and compatible with a wide range of substrates including concrete, plywood, terrazzo, glass, cement slabs, sheetrock, gypsum plasterboard, and autoclaved aerated concrete. It works effectively with uncoupling membranes and supports the installation of a variety of floor coverings such as ceramic tile, porcelain tile, marble, granite, mosaic, natural stone, vinyl, and carpet when used with appropriate adhesives. Its easy mixing ratio and smooth trowel application make installation straightforward, saving time and effort on the jobsite.

Whether you are renovating a home, upgrading a commercial space, or working on an industrial flooring project, ARDEX MRF delivers exceptional performance, strength, and reliability. Its WeatherProof Technology allows for both interior and exterior use, even in temperatures as low as 40°F, giving you flexibility across different jobsite conditions. With its combination of fast drying, moisture resistance, and superior finish quality, this skimcoat underlayment ensures a professional result that enhances both the durability and appearance of your flooring installation.