1-26-23 thu Back area Skyler‘s The printer that was removed was vented up to the roof. I had capped the exhaust on the roof the other day. Today they had some water dripping down. I got up on the roof and found that the Single wall flue piping was Condensating Inside the 2 elbows. Today I remove the 2 elbow so only 10” of single wall pipe is sticking up through the roof. I than capped that pipe and sealed the seam with roof tar. Billy is going to put insulation into the pipe from inside the building. They should prevent the pipe from condensing and dripping. material used today all supplied by the customer.