Advice required

[Kev Hughes]

Hi all.   I have a, wood burner in my living room. I use kill dried wood but I'm getting a tar like substance dripping down the OUTSIDE of the flu where it comes in from the outside wall.  I've only had the burner in since April and only now using it regularly. How do I stop it and why is it on the outside of the pipe not the inside? 

[Mick Dempsey]

Have your pipes been installed upside down?

[Kev Hughes]

I have no idea? 

[Mick Dempsey]

Well, there’s plenty of real experts on here who’ll chime in I’m sure.

But the tubes should be downward male into female to prevent that from happening.

Also I am assuming those pipes are double skinned?

Edited October 23, 2022 by Mick Dempsey

[Retired Climber]

I'm no expert, but shouldn't those pipes be pretty much sealed, so that gases and smoke aren't released back into the room. If that liquid can get out, so can gases. 

[Kev Hughes]

I have a detector in the room and there's no issues.  I was wondering if it's coming in from outside? And I think they're double skinned.  

[Mick Dempsey]

Yes they look it in fairness.

 

[John Skinner]

Are you sure the guy that fitted your system didn't use black silicone to seal around the outside of the pipe/wall gap. Said silicone is now melting with the heat of the fire and dripping all over the shop?

 

Even if it was residue accumulating inside your flue, it wouldn't look like that and certainly wouldn't be of that amount after a few uses.

[GarethM]

There won't be a joint as it goes through the wall.

 

Doubtful it's silicone as they would use high temp stuff that sets solid, maybe cavity wall insulation melting.

 

I'd suggest you call back the installer as I wouldn't touch it before calling them back under warranty.

 

But having a 45 go through a wall does seem like asking for trouble in our rather wet climate.

Edited October 23, 2022 by GarethM

[John Skinner]

4 minutes ago, GarethM said:

There won't be a joint as it goes through the wall.

 

Doubtful it's silicone as they would use high temp stuff that sets solid, maybe cavity wall insulation melting.

 

I'd suggest you call back the installer as I wouldn't touch it before calling them back under warranty 

Yes I doubt they'd use silicone too. But hell ... you never do know.

 

The first "big drip" pic really looks like a whole load of silicone has been used to fill a gap. The whole lot is heating/melting and pouring out through the lowest point.

 

Yes. I agree. Get in contact with the installer and don't use it till it's been looked at. Might also be worth having a different installers details to hand. As if it is that ... i wouldn't let them touch it till a professional had seen it.

 

Lovely looking system though