Hi
I'm getting really bad smells in my en-suite, mostly originating from the sink. The arrangement is as attached
The AAV is boxed in alongside the cistern in the en-suite and the stack in the main bathroom vents to air through the roof.
I'm running out of ideas how to solve this but I'm considering the following:
1. Extend the stack up into the attic and cap with a new AAV
2. Extend the stack right up through the roof and vent to air (I really don't fancy doing this if possible as I don't know how to seal the pipe through the roof, let alone access up on the roof)
3. Install a HepV0 vertically below the sink trap (I've tried a bottle trap with an air valve but this didn't help)
4. Install a HepV0 horizontally before the stack on the shower/sink branch (i've tried a flap/surge valve on here and it just stopped the shower draining after a while as it became clogged with hair. The gradient on this drain is quite flat with no scope to steepen)
5. Add a branch vent pipe running uphill from the sink waste pipe to the stack.
6. Drill holes in the manhole cover outside
Any ideas on which if any of these I should try (preferably not the second one!).
The sewers outside are all gravity draining and are clear. I had Wessex Water out to check this. We're at the end of the drain line and as far as I can tell there's no venting on the sewer other than the vented stack in our bathroom.
Any advice would be appreciated.
Cheers
Steve
I'm getting really bad smells in my en-suite, mostly originating from the sink. The arrangement is as attached
The AAV is boxed in alongside the cistern in the en-suite and the stack in the main bathroom vents to air through the roof.
I'm running out of ideas how to solve this but I'm considering the following:
1. Extend the stack up into the attic and cap with a new AAV
2. Extend the stack right up through the roof and vent to air (I really don't fancy doing this if possible as I don't know how to seal the pipe through the roof, let alone access up on the roof)
3. Install a HepV0 vertically below the sink trap (I've tried a bottle trap with an air valve but this didn't help)
4. Install a HepV0 horizontally before the stack on the shower/sink branch (i've tried a flap/surge valve on here and it just stopped the shower draining after a while as it became clogged with hair. The gradient on this drain is quite flat with no scope to steepen)
5. Add a branch vent pipe running uphill from the sink waste pipe to the stack.
6. Drill holes in the manhole cover outside
Any ideas on which if any of these I should try (preferably not the second one!).
The sewers outside are all gravity draining and are clear. I had Wessex Water out to check this. We're at the end of the drain line and as far as I can tell there's no venting on the sewer other than the vented stack in our bathroom.
Any advice would be appreciated.
Cheers
Steve