When installing the vapour barrier, it's important to seal all penetrations including:

• Wires
• Pipes
• Electrical Boxes
• Electrical Panels
• Pot Lights
• Plumbing Stacks
• Bathroom Fans
• Chimneys
• Interior Partitions
• Exposed Floors
• Windows, Doors, and Sky Lights
• Attic Hatches
• Headers
• Garage Separations