DESIGN/RAIN PENETRATION
Metal Building Systems
Figure 3.4.11 shows two examples of insulated panel joints in metal building systems (AAMA).
Both joints employ pressure-equalized cavities with an outer rainscreen and an inner air seal.
Various arrangements of the joint are used to prevent water intrusion due to gravity, capillary action
and kinetic energy.
Interior
Interior
Exterior
Exterior
Pressure equalized cavities
Figure 3.4.11 Pressure-Equalized Joints
in Insulated Metal Panels (AAMA)
PAGE 3.4-11
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