sewage smell in victorian house

[mancunian]

apologies if this seems like a repeat of many other threads however having reviewed several they do not seem to have the same scenario:

own a house built in 1890's with sewage smell very strong in downstairs toilet. Plumber detected bad connection between toilet and waste pipe, this has reduced the smell (previously felt sick when entering bathroom) however the smell is also appearing in upstairs hallway and in ground floor hallway. We are currently renovating the house and have removed both upstairs bathrooms, neither of these smell. The house has a crawl space which is accessable however having sniffed in two locations in different rooms there is nothing. So I am getting concerned as to where the problem could be and have some questions:

would the smell be strongest near a drainage point i.e sink, etc
any ideas why the smell is upstairs when the bathrooms are taken out and the bathrooms do not smell?

thanks in advance..

 

[turnpin]

Can you confirm you have capped of waste pipes and soil pipes bit obvious I know but lets start at the beginning regards turnpin:waving:

 

[kay-jay]

Change in pressure due to bathroom renovations causing downstairs to syphon out the traps resulting in drain smells rising through where the water seal should be in the traps. Complete the renovations and review the situation. As a matter of course fit anti-syphon traps to the upstairs sanitary ware when works are completed.

 

[mancunian]

Can you confirm you have capped of waste pipes and soil pipes bit obvious I know but lets start at the beginning regards turnpin:waving:

pipes are not capped off but no smell in these bathrooms. The smell was there in the downstairs loo before starting.

 

[mancunian]

Change in pressure due to bathroom renovations causing downstairs to syphon out the traps resulting in drain smells rising through where the water seal should be in the traps. Complete the renovations and review the situation. As a matter of course fit anti-syphon traps to the upstairs sanitary ware when works are completed.

thanks for the reply, however the smell was there prior to starting any renovations. Bit worried about completing reno (includes new flooring) then finding we have a major problem..

 

[kay-jay]

Complete the renovations with anti-syphon traps. If the problem persists at least you will know its nothing to do with the upstairs bathrooms.🙂

 

[kay-jay]

Btw sewage smells only come from the sewer unless you have a very bad aim 🙂
The anti-syphon traps should sort it...

 

[mancunian]

no on the stub stack and valve, and it's boxed in but accessible.

any idea why the smell is elsewhere but not (strong) in the bathrooms?

 

[turnpin]

pipes are not capped off but no smell in these bathrooms. The smell was there in the downstairs loo before starting.

If your plumber found a break /bad seal between pan and soil pipe I suggest exploring the remaining pipework between this pan and the nearest manhole as there could be further damage in this area but in the mean time cap off any open waste pipes regards turnpin:8:

 

[kay-jay]

no on the stub stack and valve, and it's boxed in but accessible.

any idea why the smell is elsewhere but not (strong) in the bathrooms?

Because downstairs is closer to the sewer and the traps are blown.
Failing that check what your lass is eating...