I was over my neighbor's and installed a new basement toilet for him today. I looked around to see if anything else needed some attention, and I noticed his furnace and hot water heater exhaust wasn't properly connected to his chimney. I think it was a 4 inch pipe mortared into the chimney, then a 4 inch wye connected to it which accepted the furnace and hot water heater. For some reason, the wye didn't fit the other pipe correctly and there is an air gap between the two at the bottom. Is there anything I could use other than mortar to quickly fix this for him? Is there some sort of heat resistant caulk that is appropriate for this?
>pic semi related
Something like this?
Replace that plastic flex duct pronto. Real fire hazard.
>>1028116
>Is there anything I could use other than mortar to quickly fix this for him?
Google 3M foil tape
available at hardware stores and Wal-Mart
>>1028151
the picture isn't from his house
>>1028161
Flexfix® is my brand of choice.
But yeah, foil tape.
>>1028549
Seriously?! Get a damn proper photo. There are a lot of things with exhaust pipe that might seem to be "wrong" but are actually okay and perfectly safe under certain circumstances. Need a photo though!