Perforated Control Cavity

Perforated Control Cavity™

Single Wythe Moisture Control

PCC4816, PCC4832

Need a custom detail?
Ready to order?

Perforated Control Cavity
  • Perforated Control Cavity
  • Perforated Control Cavity
  • Perforated Control Cavity

Perforated Control Cavity Highlights

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.



  • Perforations allow cross ventilation for better drying
  • Rigid and durable; will not compress behind interior finished wall
  • Prevents water bridging
  • Provides LEED credit value with its 96% post-consumer recycled content
  • “The Green Guard Classic WrapTM 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)

Perforated Control Cavity Installation

  • 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)

Perforated Control Cavity Ordering/Shipping

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.

Product Number PCC 4816 PCC 4832
Square Feet per Roll 66 132
Roll Length (Feet) 50 50
Roll Width (Inches) 15.75 31.5
Channel Depth 3/16" / 5mm 3/16" / 5mm
Rolls per Box 4 N/A
Boxes per Pallet 16 N/A
Rolls per Pallet 64 32
Square Feet per Pallet 4224 4224
Pallet Size 50" x 50" x 88" 48" x 48" x 77"