Is there a way to convey that major structural project (tear-off and replace porch floor, including a joist) really does mean major structural project? And that we'll need help means This project requires sustained effort from more than two people. Please commit to taking part or clearly say that you cannot?
Because apparently my co-owner and i did not adequately communicate this to our housemates/renters, and it led to Big Problems this weekend. Like, colossal blow-ups.