Roofing eaves do an important job in keeping water away from wall and window systems. The rise of modernism in architectural design has started a fashion where these are omitted to achieve a cleaner line on the outside of the building. However, eaves perform a vital role in protecting the home from moisture.
Many framers are being told to install OSB wall panels/sheathing as tight as possible in order to create a tighter building envelope and meet energy codes. While this may make some sense, there are inherent pitfalls to this strategy.