Can anyone suggest possible causes of the following:
Camray 5 65/90 utility boiler (oil fired) installed March this year in a utility room which is an extension built on the end wall of my house. (Old house, built 1835). Other side of the wall is a fireplace with wood burning stove, which has flexible flue up chimney. Boiler flue rises vertically from boiler, then angles through wall and joins (presumably) flexible flue pipe also up chimney.
Thick tarry liquid was dripping from the underside of the boiler flue where it angles through the wall. I've hacked away the cement at the point it is dripping and lots has oozed out. But it's still dripping 4 hours later, although it's now much more watery. Brown, with a burnt smell.
I can't see any pipework running through the wall directly above that point (after all, it's the outside wall of the chimney), although there is pipework running through a few feet at either side, so I guess there could be a leak there.
Can't see it could be damp in the chimney (dripping for 4 or 5 hours?)
So could it be the condensation from the boiler flue? Possibly the angled flue through the wall not properly connected to the flexible flue going up the chimney? If so, sounds pretty dangerous.
Any other ideas? Hoping not to have to hack right through the wall...
Thanks
Martin
Camray 5 65/90 utility boiler (oil fired) installed March this year in a utility room which is an extension built on the end wall of my house. (Old house, built 1835). Other side of the wall is a fireplace with wood burning stove, which has flexible flue up chimney. Boiler flue rises vertically from boiler, then angles through wall and joins (presumably) flexible flue pipe also up chimney.
Thick tarry liquid was dripping from the underside of the boiler flue where it angles through the wall. I've hacked away the cement at the point it is dripping and lots has oozed out. But it's still dripping 4 hours later, although it's now much more watery. Brown, with a burnt smell.
I can't see any pipework running through the wall directly above that point (after all, it's the outside wall of the chimney), although there is pipework running through a few feet at either side, so I guess there could be a leak there.
Can't see it could be damp in the chimney (dripping for 4 or 5 hours?)
So could it be the condensation from the boiler flue? Possibly the angled flue through the wall not properly connected to the flexible flue going up the chimney? If so, sounds pretty dangerous.
Any other ideas? Hoping not to have to hack right through the wall...
Thanks
Martin