Hi,
I have had problems with water entering the loft via the gas flue which is connected to a fire place in our living room (there is no fire installed at this point). I could see water on the outside of the pipe in the loft when raining heavily.
I believe it is a B-Vent system, where it has dual-walled pipes - an inner one for carrying away the fumes and an outer one for insulation/protection.
I have included a picture of the flue where it exits the roof.
A roofer came over and had a look and saw that where the flaunching met the pipe had no sealant around it. He put a load of sealant down and also sealed around the storm collar for good effect.
However, this doesn't seem to have solved the problem entirely. I suspect that water is also entering inside the outer pipe and then leaking out of one of the joins. I could seal these joins up, but I imagine this just directs the water elsewhere in the house to collect and cause damage.
The rain cap appears to be in good condition and I'm not really sure where else water could enter so I'm at a bit of a loss.
Any advice would be appreciated, but I'd also like to know:
1.) If water ingresses the outer pipe does there tend to be a drain away point for this or not?
2.) Is water ingress of the outer pipe common? Should I be concerned?
3.) Where else could the water be entering?
I wasn't sure if this was the most suitable place to post this, or if there is a gas/fire forum I should put this on instead - however I appreciate you taking your time to read this post anyway.
Thanks!
I have had problems with water entering the loft via the gas flue which is connected to a fire place in our living room (there is no fire installed at this point). I could see water on the outside of the pipe in the loft when raining heavily.
I believe it is a B-Vent system, where it has dual-walled pipes - an inner one for carrying away the fumes and an outer one for insulation/protection.
I have included a picture of the flue where it exits the roof.
A roofer came over and had a look and saw that where the flaunching met the pipe had no sealant around it. He put a load of sealant down and also sealed around the storm collar for good effect.
However, this doesn't seem to have solved the problem entirely. I suspect that water is also entering inside the outer pipe and then leaking out of one of the joins. I could seal these joins up, but I imagine this just directs the water elsewhere in the house to collect and cause damage.
The rain cap appears to be in good condition and I'm not really sure where else water could enter so I'm at a bit of a loss.
Any advice would be appreciated, but I'd also like to know:
1.) If water ingresses the outer pipe does there tend to be a drain away point for this or not?
2.) Is water ingress of the outer pipe common? Should I be concerned?
3.) Where else could the water be entering?
I wasn't sure if this was the most suitable place to post this, or if there is a gas/fire forum I should put this on instead - however I appreciate you taking your time to read this post anyway.
Thanks!
