Sealing joints and penetrations is critical for maintaining the air barrier's integrity. Here are some tips for effective sealing:

• Use the appropriate sealant: Select a sealant compatible with the air barrier material and designed for the specific application, such as joints, seams, or penetrations.
• Apply sealant properly: Follow the manufacturer's guidelines for proper application, including surface preparation, bead size, and curing time.
• Seal all penetrations: Seal any penetrations in the air barrier, such as electrical outlets, plumbing, and vents, using appropriate materials and techniques.
• Pay attention to transitions: Ensure that the air barrier is properly sealed at transitions between different materials or building components, such as windows, doors, and rooflines.