Try in a 1930-40s house with vermiculite insulation. You need asbestos monitoring whenever you crack open a wall or a ceiling. Of course, the same can be said

Try in a 1930-40s house with vermiculite insulation. You need asbestos monitoring whenever you crack open a wall or a ceiling. Of course, the same can be said for and 1970-80-90's house with Chinese drywall. I'll never get 10G from my basement to 2ed floor office. I can run fiber along the chimney, but there is no way down that doesn't disturb the vermiculite insulation. I love old houses, but they present a whole different set of engineering challenges and DIY skills.