Gaps in your home can be small, such as the ones found around an electrical outlet in an exterior wall. However, large openings are also common, such as the ones created by plumbers in floors and framing as they install pipes, or the long gaps like the one created when a cantilever soffit does not meet the exterior wall in an airtight connection.
Picture frame hanging tip: Stick a nail through a clothespin. Hang the photo from the nail attached to the clothes pin. Line up picture against wall. Lightly tap top of picture frame so nail leaves a small mark on the wall for you to hammer in a nail.