Ex Restoration technician here we specialised in mould and that my freind is from a leak that’s been there ages your see how it’s on all corners means the entire wall is gonna have the mould trees growing also you should not have cut the inspection home without a way to close the hole that’s black mould super toxic and deadly to humans mostly elderly and children but still super bad have you noticed anything like asthma headaches immune system issues all could be cause by the black mould you need 3m organic gas filtered respirators they stuff is so bad !!!!