As many as one in four new or renovated buildings can be classified as “sick” according to the U.S. Environmental Protection Agency. That’s 25%. One might say that it’s an epidemic. So why are so many buildings sick? Well, it’s a complicated answer. That’s because Sick Bui

Remember a while ago when we were talking about Sick Building Syndrome (SBS) and Building-Related Illnesses (BRI)? (If not, here’s the article.) We discussed how modern tightly-sealed buildings can produce systematic indoor air quality (IAQ) problems. Proper ventilation and HVAC contr