Well had a call, mentioned in earlier post. So what was wrong..
Well, the Home Inspector had missed a couple of things. Having said that he is a very good Home Inspector in my opinion. But this only goes to show even the best of them do not handle woodstoves well.
a) missing heat shield at ceiling – 16 inches clearance with single wall pipe. But this was not what was making it smoke!
b) missing screws on pipe joints – code says 3 screws per joint. One joint of pipes had zero screws.. yes zero.
c) a two foot section of single wall pipe was not completely joined together. Single wall pipe is essentially a flat piece of steel rolled into a circular shape and held together with a barbed like joint. Snap it together and it is supposed to hold. Well this was not together.. for a full half of the length of pipe! And at the one end had a half inch gap .. this was defiantly one area where smoke was coming out.. when I asked they admitted smoke was exiting here. Even if everything else was working this would leak smoke, flue gases, carbon monoxide, whatever.. a serious dangerous situation. Yes this was potentially a cause of the smoke.
Three items missed – and potentially some very dangerous ones.. this is why a Level 2 Inspection is supposed to be done for Real Estate transactions.
But there was another cause as well, at least today being that it was minus twenty degrees outside. A cold masonry chimney with a serious downdraft. I did start a fire and get the stove pipe and chimney heated (after I replaced the stove pipe with gap – tried to snap it together and it did not hold – simply opened up again). Once chimney was heated the stove functioned properly.
Realistically if you need a stove inspected then you do need to have somebody who understands the principles of the operation and how to fix and how to inspect it properly!
Unlike a Home Inspection there are few areas for opinions; it is generally right or wrong. And with wood burning appliances you are often not simply violating a building code, which can be dangerous but you may get away with. You are often violating or attempting to violate the laws of physics. It is not an area to mess around and not do things right! Be safe, sleep soundly at night.