Gravity Cavity

Gravity Cavity™ Installation

Economical Rainscreen Drainage Plane

GC 1816, GC 1832

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Gravity Cavity Installation

  • Roll out Gravity 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 Gravity 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 Gravity Cavity™.  Overlap only the fabric.  Plastic butts directly to top of course beneath it.
  • Install veneer – attachment of veneer material will sandwich the Gravity Cavity™ drainage mat permanently in place in thin veneer applications. 
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