DuPont Expands ArmorWall™ System with ArmorDry™ Exterior Drainage Mat for Lath-Based Claddings

New drainage solution for commercial exterior claddings advances building envelope performance with improved moisture management

WILMINGTON, Del., November 4, 2025 — DuPont Performance Building Solutions today announced the release of the DuPont™ ArmorDry™ Exterior Drainage Mat, a new product for use behind lath-based commercial exterior claddings. DuPont™ ArmorDry™ limits inward moisture movement and reduces solar heat gain while promoting high-performance moisture management as part of the DuPont™ ArmorWall™ System. The ArmorWall™ System, an innovative 5-in-1 exterior wall solution for the building envelope, integrates five critical building enclosure performance attributes into a single system. The addition of ArmorDry™ further strengthens the system’s moisture management capabilities by providing a non-permeable 3/16" ventilated airspace for water drainage and air circulation behind lath-based commercial exterior claddings like stucco and adhered stone. ArmorDry™ can also support and improve the performance of many direct-applied claddings like fiber cement, terracotta tiles, or slate shingles. 
 
ArmorDry™ is constructed with a heavy-duty, non-permeable black corrugation attached to a gray filter fabric scrim, delivering both durability and reliable performance. By creating a ventilated airspace, the mat drains water quickly while allowing air circulation and drying behind exterior lath-based claddings, helping reduce the risk of mold growth, water damage, and premature façade deterioration. The robust corrugation minimizes compression during installation, ensuring consistent performance across the wall assembly, while its lightweight design makes it easy to cut, handle, and install. In addition, the ArmorWall™ System included ArmorDry™ in its most recent successful NFPA 285 fire tests, helping to create a safe, high performance building envelope.
 
Engineered to help maximize building envelope performance while streamlining construction, ArmorWall™ combines structural sheathing, fire resistance, continuous air and water-resistive barriers, and ultra-low GWP continuous insulation into a single panel. Unlike traditional multi-layer assemblies, ArmorWall™ allows claddings to attach directly to the panel, simplifying installation. The Magnesium Oxide (MgO)-based sheathing of DuPont™ ArmorWall™ provides exceptional strength and durability, fire resistance, reduced thermal bridging, and resistance to moisture, mold, and warping. The system delivers high R-value insulation, façade design flexibility, can enable faster installation, and now, with the introduction of ArmorDry™, the ArmorWall™ System further enhances moisture management, protecting claddings and extending the life of the wall system. 
 
"DuPont is known for expertise in building science and innovation, and the introduction of ArmorDry™ is another step forward in advancing high-performance building envelopes," said Victoria Raineri, Specialty Market Manager at DuPont Performance Building Solutions. "ArmorWall™ now provides improved moisture management while maintaining façade design flexibility, delivering a complete, reliable solution for modern building projects." 

For more information, please visit ArmorWall.DuPont.com. 

About DuPont Performance Building Solutions and Corian® Design  

Grounded in science, DuPont Performance Building Solutions and Corian® Design are working alongside those who also seek a sustainable tomorrow to help people thrive at home and in their communities for years to come. By developing solutions for managing the air, water and thermal performance of buildings and residences, we help our customers build energy-efficient, resilient, and durable shelters in a rapidly changing world. Backed by unmatched industry insight, building knowledge, and technical support, as well as world-class brands such as Styrofoam™ Brand, Tyvek®, and Great Stuff™, our products and services portfolio enables customers to focus on what they do best, no matter where and how they choose to build.  

About DuPont

DuPont (NYSE: DD) is a global innovation leader with technology-based materials and solutions that help transform industries and everyday life. Our employees apply diverse science and expertise to help customers advance their best ideas and deliver essential innovations in key markets including electronics, transportation, construction, water, healthcare and worker safety. More information about the company, its businesses and solutions can be found at www.dupont.com/. Investors can access information included on the Investor Relations section of the website at investors.dupont.com.

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For further information, contact:

Katrina Younce

310-995-3619

katrina@kyprinc.com