Rainscreen Systems
WaterWay® Rainscreen & Ventilation Mats
Advanced drainage and ventilation solutions for high-performance wall assemblies. WaterWay® Rainscreen & Ventilation Mats are engineered to improve exterior wall performance by managing moisture, promoting airflow, and reducing the risk of trapped water within wall assemblies.
Moisture Management
Why Rainscreen Systems Matter
Moisture intrusion is one of the leading causes of exterior wall failure. Even well-designed cladding systems can allow water behind the exterior surface through joints, penetrations, and environmental exposure. WaterWay® rainscreen systems address these challenges at the assembly level.
Dedicated Drainage Plane
Creates a clear path for water to exit the wall assembly.
Promote Airflow & Drying
Continuous ventilation cavity allows moisture to evaporate.
Reduce Hydrostatic Pressure
Prevents water buildup behind cladding systems.
Protect Substrates
Shields underlying insulation and sheathing from damage.
40+ Years of Innovation
What Is WaterWay®
WaterWay® is a three-dimensional polymer matrix drainage and ventilation mat installed behind exterior cladding systems. The open structure creates a continuous air and drainage space that allows water to drain freely while promoting ventilation and drying within the wall assembly.
Compatible With
- Elastomeric acrylic stucco finishes
- Cementitious and acrylic claddings
- Metal panel systems
- Panelized and modular construction
- Residential and commercial wall assemblies
Performance
Key Performance Benefits
Continuous Drainage Cavity
Creates a continuous drainage and ventilation cavity behind cladding systems.
Rapid Moisture Drying
Promotes rapid drying of incidental moisture that enters the wall assembly.
Prevent Moisture Damage
Reduces the risk of trapped water and moisture-related damage over time.
Long-Term Durability
Supports long-term durability and performance of wall assemblies.
Barrier Compatibility
Compatible with modern air and water-resistive barriers for complete protection.
Climate Versatility
Designed for consistent performance across diverse climate conditions.
Application Areas
Technical resources
Stuc-O-Flex systems are specified across a wide range of building types and construction scenarios. Whether the project involves new construction, remediation, or specialized substrates, our solutions are designed to support architects, builders, and owners throughout the entire lifecycle of the building.
Wall Assemblies
Complete assembly drawings and specifications.
Product Data Sheets
Technical specifications and performance data.
Specifications
BIM, CAD & Drawing Details
Digital design files for your projects.
Warranty & Maintenance
Coverage details and care documentation.
Use Cases
Applications
WaterWay® systems are specified across a wide range of building types and construction scenarios.
Residential Construction
Used in single-family and multi-unit residential projects to improve moisture management and reduce long-term maintenance risk.
Commercial & Institutional
Supports complex wall assemblies where durability, drying potential, and code compliance are critical.
Remediation & Retrofit
Ideal for façade remediation projects where moisture management and drying are required without full wall replacement.
Modular & Panelized Systems
Integrates with off-site construction methods while maintaining drainage and ventilation performance after installation.
Metal Building Systems
Provides drainage and airflow behind metal panel and hybrid wall assemblies.
View All Applications
View all available product applications.
Moisture Management
Installation & Technical Support
Proper installation is essential to achieving the intended drainage and ventilation performance.
Assembly Selection
Assembly selection and detailing guidance for optimal rainscreen performance.
Installation Best Practices
Detailed installation guidelines and best practices for proper WaterWay application.
Jobsite Support
Technical service support for jobsite questions, inspections, and troubleshooting.
Need technical assistance?
Get In Touch
Talk With a Stuc-O-Flex Specialist
If you’re designing, specifying, or installing a rainscreen system, our team can help determine the appropriate WaterWay configuration for your project.
Call Us
1-800-305-1045
Office & Will Call Hours: Monday – Friday: 7:00 AM – 5:00 PM
Material Mixing / Production Cutoff Last mix orders accepted by 4:00 PM
Offices
Corporate Office
15459 NE 95th St.
Redmond, WA 98052
(425) 885-5085
Eastern Division
1605 Prosser Road
Knoxville, TN 37914
1-800-305-1045