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Glossary

Pressure-Equalized Rainscreen

A specific type of drained wall system that uses spatial compartmentalization, careful venting to air leakage ratios, and stiff components to encourage short-term equalization of drained cavity (also the air chamber) pressures with exterior wind pressures to reduce the pressure across the screen (or cladding). Such systems rely on effective drained to control rain, and if functional, merely reduce the rainwater that the drained system must accommodate.

Related terms: Air Leakage, Cladding, Drained

Related resource: BSD-013: Rain Control in Buildings; High Performance Enclosures, High Performing Precast Concrete Building Enclosures: Rain Control