Thermal Properties - Moisture Control

No insulation “attracts” moisture, but various materials exhibit different moisture handling characteristics. WeathershieldTM has the natural ability to dissipate excess moisture and maintain an acceptable level of moisture content. Moisture levels in a home can range between 7-9% by weight depending upon the time of year. Cellulose insulation can retain over 10% moisture without any adverse effect on the thermal insulating properties.

Canadian homes and buildings can experience loss of warm moist air from the interior environment to the colder exterior air by several means such as ripped, unsealed or discontinuous vapour barrier or by piping or electrical wiring that may penetrate the vapour barrier.

During the heating season, these disruptions to the vapour barrier permit escaping air to condense within the insulation layer or on the cold roof or wall sheating. To combat this occurrence, insulations should be used which exhibit an ability to dissipate moisture.

Weathershield's TM ability to transport moisture to a surface where it can evaporate is most important in keeping moisture levels low and insulation effectiveness high.




 

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