Rooftop Standpipe perhaps?
I have read through most of the plumbing problems and haven't seen exactly my situation, so here goes. Here are the facts as best as I can describe.
Block home built in 1968 as 2 bdr. 1 bath
Addition of a bedroom and additional bath circa 1978 (fireplace too.. another issue)
Secondary outbuilding.. block bldg... with some hookup to septic, no bathroom. I think its an open pipe to the septic.. did I forget to mention it has a septic system?
I asked the previous owner had he ever had the septic pumped out?. He said that he never had.. he owned it for 5 years without a problem , so he said..
I originally noticed that the toilets in both bathrooms were slow to flush.. but they did flush.. kinda sort of.
After 2 months in the house.. the first problem was that the washer drain began to overflow as if it wasn't draining fast enough... I added a box of Rid X to the toilet and it seemed to help.. kinda sort of.
Wife notices a "bean smell" in bathroom no2 coming from the sink vent...
3 months into the house... toilet in bathroom number 1 backs up and overflows.. we toss the carpet out... the next morning.. it flushed... kinda sort of..
I found a plunger and began to plunge toilet in bathroom number 1... it flushed and raw sewage began to expel from whatever connection there is in the outbuilding out into the driveway...
Washer goes to spinout cycle and every time... water flows from outbuilding out onto driveway..
4 months into the house and both toilets flush slowly if at all without plunging... if they don't.. I plunge them... plunging in bathroom number 1 causes gurgling sounds in the sink of bathroom number 2... plunging toilet in bathroom number 1 causes raw sewage to flow out of shower drain in bathroom number 1... a nice mess.
Plunging toilet in bathroom number 2 causes air to inhale and exhale in the sink vent of bathroom number 2.
There are two "stand pipes" on the roof of the house... Are they clogged?
Is the septic tank in need of pumping out?
How does one unclog rooftop stand pipe?
I haven't a clue as to what the connection is between the main house and the outbuilding... the county building department does not have records of exactly where the septic tank is located nor any records of the outbuilding.I did find a Stop Work Order dated from the '70's for the outbuilding.
Any help will be appreciated.