MTI Window Drainage Plane

WINDOW DRAINAGE PLANE™

SUB SILL DRAINAGE

WDP 5000

DRAIN MOISTURE BELOW WINDOWS

The sub-sill area of windows is highly susceptible to moisture buildup. MTI’s Window Drainage Plane™ (WDP) is designed to facilitate proper drainage in this critical region, protecting against water damage and prolonging the lifespan of the structure.

THE MTI ADVANTAGE

• Creates a Drainage Plane in the Sub-Sill Region: Ensures efficient moisture management.
• Rigid and Durable: Built to withstand installation and environmental stresses.
• 100% Recycled Content: Environmentally conscious and effective.

APPLICATIONS

• Stucco, thin stone, or brick.
• Natural stone or full brick installations.

WINDOW DRAINAGE PLANE™ INSTALLATION

1. Prepare the Surface: Ensure the bottom of the window rough opening is sloped to drain.
2. Position WDP: Cut and place the WDP strip on the prepared surface. Use dabs of construction adhesive for temporary attachment.
3. Flash the Opening: Follow the window manufacturer’s instructions to flash the rough opening properly.
4. Install the Window: Place and secure the window over the WDP.
5. Consult Animation: For detailed guidance, refer to the installation animation provided by MTI.

WINDOW DRAINAGE PLANE™ SPECIFICATIONS

• Material: 0.024" (0.6 mm) thick high-impact polystyrene.
• Design: Corrugations are 0.120" (3 mm) deep, formed into an L-shape.
• Dimensions: 5" (127 mm) wide by 9" (229 mm) high, fitting on the sub-sill region before window installation.

PACKAGE QUANTITIES

RESOURCES

• Product Specs
• Cut Sheet