Hoping to find some guidance.
I have a flat roof home with a commercial roof system (home built in 1957 and 98% of the home and systems have been updated, remodeled or are new). Last week while checking on workers performing tuck pointing on the furnace chimney I surveyed my vents and general condition of the roof since I was up there.
I noticed that one of two plumbing vents (workman told me that is what it was) had standing water. The water is about 6 inches down from the top of the pipe. The second plumbing vent pipe has no water.
I did some google searches and found that standing water is not desirable. There is a small bathroom below the plumbing vent and a laundry room adjacent to that. Neither has a plugged drain nor any indication of a slow drain, or gurgling etc. Laundry room washer is used daily and the above mentioned bathroom's toilet and sink are the most frequently used fixtures in that room.
So I went on the roof with a long extension pole and put it down the vent. It met resistance about 2-3 inches below the water. The water is brownish, either from dirt or ??. I pushed the pole against the blockage and it broke up the blockage. However the water did not drain or change level at all.
So I went on youtube for guidance and decided to order an auger. Received the auger and went up on the roof again with auger in hand and my hose. The auger extended about 9 feet before hitting something. Nothing I did was able to get through the blockage. It could have even been sheet metal for the all I know and based on the type of resistance I felt.
I then for the heck of it put the hose in the drain and it just filled up. It did not drain so now the vent is full of brown murky water. Guess the next step is a plumber (?) but can anyone venture a guess on what is happening? Can a vent be closed off if there is another one 25 feet away? Over the years we have had plumbers out here for blockage in other bathrooms and no one has ever asked to go on the roof to look at the plumbing vent. Should that be standard procedure that I expect from a plumber? Thank you,