Trap doors can be a real problem in older homes. Many of the safety regulations in the trap industry that we take for granted are less than 30 years old. It’s frustrating that you have to leave your couch on the north edge of the living room and that you can never have a dance party in the dining room. Retrofitting newer units is always an option but to do it cleanly you really need to replace the entire floor and who wants to deal with picking out new carpeting after you just had the walls painted the perfect complementary shade of blue.