I am doing a reno on a revenue property and there is something that is not right in this house.
There is black stuff on the ceiling in the kitchen
There is a grease like substance on the lights
There is black stuff around the windows. (all windows)
There is 2 circles on the screen in the kitchen. (most likely from a fan)
Any Ideas of what is going on???
PS. This is the reason I am at the place