Sure Cavity™

Sure Cavity rain screen drainage plane (drainage mat) works because it maintains a separation between the materials used for the veneer and the structural back-up wall.  Sure Cavity’s channels are better than fiber-based mesh because they enable moisture that enters the building envelope to travel quickly down and out the bottom of the wall.

Features/Benefits

• Compartmentalized channels promote pressure equalization
• High impact polystyrene ensures durability and prevents compression, waviness, and nail drive-through experienced with fiber-based mesh drainage mat products
• Saves installation time (half the time of furring strips and backer board)
• Provides LEED credit value with its 96% post-consumer recycled content.
• The adhered fabric blocks mortar or stucco from filling the drainage channels and acts as a bug screen at the bottom

• Roll out Sure Cavity rainscreen drainage plane/drainage mat over the WRB on the backup wall with spunbond fabric facing the weather. Back wrap 4’’ fabric on bottom course to act as bug screen.
• Temporarily attach Sure Cavity rainscreen drainage plane/drainage mat with hammer stapler on wood backup walls or dabs of adhesive on masonry. 
• Roll out second and succeeding courses of Sure Cavity rainscreen drainage plane/drainage mat.  Overlap only the fabric.  Plastic butts directly to top of course beneath it.
• Install veneer – attachment of veneer material will sandwich the Sure Cavity rainscreen drainage mat permanently in place in thin veneer applications. 

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

Sure Cavity Specifications

SC5016 and SC5032 are 0.024" (0.6 mm) thick high impact polystyrene sheets. They are formed with corrugations and a spunbond polypropylene fabric on one side with a 4" (102 mm) skirt on one edge.