Perforated Control Cavity™

Perforated Control Cavity maintains a separation between the interior surface of a single-wythe CMU structural wall and the moisture sensitive materials of the interior finished wall.  It creates a drainage system that allows moisture to travel down and out of the wall into a drainage field.

Features/Benefits

• Perforations allow cross ventilation for better drying
• Rigid and durable; will not compress behind interior finished wall
• Prevents water bridging
• 96% post-consumer recycled content
• “The Green Guard® Classic Wrap provides a layer of air resistance to increase energy efficiency, and it acts as a water-resistive barrier that breathes, allowing moisture vapor to escape and reducing the potential for condensation buildup.” (see Green Guard Classic Wrap website for specs)

• Install with channel pattern running up and down vertically and fabric to interior
• Overlap all edges and ends a minimum of 1”
• Overlap horizontal edges shingle fashion to outside concrete, masonry substrate (see Lap & Fastening Detail) – upper sheet laps behind (back-laps) lower sheet
• Cover entire wall surface, top to bottom, in this fashion
• Mechanically fasten with concrete nails or power fastener; fastening pattern 2’ on center (see Lap & Fastening Detail)

Contact MTI at 1-800-879-3348 for specific cost to your destination.

Perforated Control Cavity Specifications

A 0.024" (0.6 mm) thick high impact polystyrene sheets, formed with corrugations and a cross-woven polyolefin fabric (GreenGuard Classic Wrap) on one side with a 4" (102 mm) skirt on one edge.