I have noticed that there is some grease dripping out from the duct connected to my oven onto the basement floor where subceiling has not been installed. The grease is leaking in a section of the duct where it is joined in a vertical section but the joint is constructed so that the lower piece of duct pipe fits inside the upper duct piece. The joint is riveted shut. The joint had been duct taped by the builder and the grease is dripping through. Any ideas about a good fix to this problem?
Thanks
Glenn