During IBS our Meet the Experts sessions gave show attendees the opportunity to get their questions answered. Our MC, Ted Brunson(right) pitches the following question to Building Scientist Lucas Hamilton
What is CertainTeed doing to control the way moisture is entering and leaving the home?
We use a variety of different kinds of materials and technique in our products – including passive materials – that can change their properties from being vapor closed to vapor open to address this issue. In a situation when a wall gets wet, the physical materials that make up that wall change and promote the removal of the moisture from that wall to dry it out before biological contaminants can take hold and compromise the indoor air quality.
We have always had moisture intruding in our built assemblies but as we have increased our efforts to conserve energy over the last 40 years we have reduced our tolerance for that moisture and drying potential. If you can pump heat and energy into a wall you can dry it out. But if you bottle up that energy you reduce your tolerance for those intrusions.