Safeguard your building enclosure with vapor permeable insulation.

Because a safer, healthier environment for those inside is the solution everyone’s looking for. Learn more by viewing our Vapor Diffusion and Condensation Control for Commercial Wall Assemblies guide.

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Vapor diffusion is generally thought of as a negative process but in reality it’s an important drying mechanism that can be used as part of the solution.

What is vapor diffusion

Vapor diffusion is the movement of water vapor molecules through porous materials as a result of vapor pressure differences. It’s one of four critical elements that affects the success of your building enclosure.

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Stone wool vapor permeable insulation allows for greater outward drying than vapor impermeable insulation such as foam plastics.