Vapor Retarder

Vapor retarders play a crucial role in controlling moisture within well-designed roof systems by minimizing the passage of water vapor, thereby mitigating potential damage caused by condensation. They are typically recommended in the following scenarios:

• Above heated structures located in areas where January temperatures typically dip to 40°F (4°C) or colder.
• Over buildings with elevated indoor relative humidity levels.
• In any comparable situation where a significant vapor drive is anticipated.

It's important to note that incorrectly specified or installed vapor retarders can adversely impact the performance of roofing membranes.