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Understanding air movement

The selection and placement of air barrier products is based on several factors, including exterior climate, direction of airflow and structural design. Henry offers products to enhance indoor comfort in all climates. Our specialists can help you spec just the right barrier for your wall construction.

>>About air, vapor and rain barriers
>>Solving common building environment problems

Key principle of air movement: Air moves from warm to cold

1. Vapor-permeable assemblies for all climates – Promotes drying of the wall cavity in either direction.

2. Non-permeable assemblies for high humidity or cold climates – Reduces condensation on cold surfaces.

3. Non-permeable southern assemblies for hot/humid climates – Reduces thermal bridging.

4. Typical UV-resistant assemblies for architectural panels with open joints –Ensures long-term durability.