Product Info - Thermal Moisture Control

Weathershield has the natural ability to dissipate excess moisture and maintain a an acceptable level of moisture content. Moisture levels can range between 7 -9% by weight depending upon the time of the 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 warm air to condense within the insulation layer or on the cold roof or wall sheathing. To combat this occurrence, insulations should be used which exhibit an ability to dissipate that moisture.

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