Up until the late 90’s or so, the importance of proper roof ventilation wasn’t really understood, as a result, it’s estimated that as many as 90% of American homes built in the 20th Century were constructed with inadequate ventilation! This realization came with the answers to mysteries that have plagued homeowners and roofers for years. From condensation that appeared with no seeming cause, to mysterious water damage, learning about proper ventilation changed the roofing and housing industry forever! Armed with this knowledge, we have developed many solutions to the problem and answers to questions we didn’t have before. Today we…