Extra-Wide Air & Vapour Sealing Protection

3015NP AB WT 12" x 75' Air & Vapour Barrier Membrane is a high-performance self-adhered membrane designed to provide superior air sealing and moisture protection for commercial and residential building envelope systems. With its extra-wide 12-inch format and slit liner design, this membrane offers efficient coverage for large joints, transitions, and flashing applications while helping create airtight, energy-efficient wall assemblies.

Key Features:

• Air & Vapour Barrier Performance: Helps reduce air leakage and moisture infiltration
• 12" Wide Coverage: Ideal for larger sealing and transition applications
• Slit Liner Design: Allows for easier positioning and controlled installation
• Strong Adhesion: Bonds securely to a variety of construction materials

Benefits:

• Improves building envelope efficiency and thermal performance
• Helps protect wall assemblies from moisture intrusion
• Provides durable, long-lasting sealing performance
• Simplifies installation in large-scale applications

Applications:

• Air and vapour barrier systems
• Window and door flashing transitions
• Wall assembly joints and penetrations
• Commercial and residential construction projects

3Mâ„¢ Air and Vapour Barrier is an air, moisture, and water impermeable film membrane with an aggressive, high-tack pressure sensitive acrylic adhesive. It reduces air leakage and uncontrolled airflow from the building envelope, prevents moisture ingress and helps improve indoor air quality. It does not require the use of a primer on most construction surfaces.