MTI Sure Cavity® Rainscreen Drainage Mat

SURE CAVITY®

RAINSCREEN DRAINAGE PLANE

SC 5016, SC 5032

WHY RAINSCREEN? NO WALL IS WATERPROOF

Modern, airtight buildings are at a higher risk for moisture and mold issues. Sure Cavity® offers a reliable rainscreen drainage system that allows moisture to exit quickly, protecting the building envelope. It’s the smart builder’s choice for preventing costly wall failures and maintaining a dry, durable structure.

The MTI Advantage

• Unobstructed drainage: Facilitates moisture escape from the wall.
• Vapor permeable: Allows full ventilation for optimal performance.
• Resists compression: Reduces waviness for a smooth finish.
• Time-saving installation: Cuts install time by 50% compared to furring strips.
• Integrated protection: Features mortar-blocking fabric and a bug screen.
• Sustainable materials: Made with 100% recycled plastic.
• 20-year warranty: Backed for long-term reliability.

APPLICATIONS

• Stucco, thin stone, or thin brick
• Natural stone
• Full brick
• Fiber cement & cedar siding
• Roofing applications

INSTALLATION INSTRUCTIONS

1. Position Sure Cavity®: Roll out the rainscreen drainage plane with the spunbond fabric facing the installer. Back wrap the 4’’ fabric on the bottom course to act as a bug screen.
2. Fasten securely: Use a hammer stapler for wood backup walls or adhesive dabs for masonry. To avoid wind damage, only install what can be covered with lath or siding the same day.
3. Install additional courses: Overlap only the fabric while ensuring the plastic butts directly to the course beneath.
4. Apply veneer: Attach veneer material to permanently secure the Sure Cavity® rainscreen drainage mat in place.

NOTE: For interior brick veneer retrofit applications, the fabric separates the corrugated plastic from closed-cell spray foam.

SPECIFICATIONS

• Material: High-impact polystyrene sheets with corrugations and spunbond polypropylene fabric.
• Thickness: 0.024" (0.6 mm).
• Fabric skirt: 4" (102 mm) on one edge.
• Referred to as: Channeled and perforated high-impact polystyrene with adhered fabric, ideal for drainage behind stucco and scratch coat systems.

PACKAGE QUANTITIES

RESOURCES

• Product Specs
• Cut Sheet
• MTI Product Comparison