 was built probably between 1900 and 1940 or so. If you have an undersized electrical system, that was probably pretty common around 1940 to 1960. If your home has some of the original decorating from maybe the 60s, you're going to notice everything is dark, dark, dark. We call that decorating's dark era. That's like 1960 to 1980. Aluminum wiring was common in 1962. Hope you don't have any of that. Let's see what else. How about roof ventilation?