Discuss Terrible smells in new house I have moved into in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Status
Not open for further replies.
Messages
37
I have just moved into my house. There are terrible smells eminating into it seems 3 rooms all containing plumbing. I understand a little about traps and soil stacks. So a plumber is looking into replacing traps on my bath and shower as there are smells coming from there too but there is a really bad smell coming into the Utility Room downstairs. In there, there is a sink (which I am told the pipes are clean), washing machine and it seems the internal soil stack (of which I cannot locate the end to check if there is an AAV attached or AAV problem)...It is not in the loft and there is no evidence of it in the house anywhere. I have two bathrooms which back onto each other, one of which is above the utility room. Where do i start to at least minimise disruption? A plumber told me that there also seems to be a 3" pipe behind the sink in the utility room which we don't know what it is connected to as behind a load of units (which he said was strange as this is usually a rain type pipe) . This house seems to have everything boxed in and loads of plumbing? Can anyone give me any guidance, are there any checks I can do - its driving me crazy..... I also have no external access to have the pipes jet cleaned.... :(
 
Find something in the house like a long thin screwdriver that will go through the holes in the basin, sink, bath and shower wastes.
If the screwdriver comes out dry then the waste traps (U-bends) underneath are dry, without water in the U-bends odours are free to enter the room.
 
It could be something as simple as they've just dried out as the house hasn't been lived in for a month etc ??

Run the taps for a couple of mins and all of the appliance eg washing machine dishwasher etc should sort it if not there's a problem
 
Find something in the house like a long thin screwdriver that will go through the holes in the basin, sink, bath and shower wastes.
If the screwdriver comes out dry then the waste traps (U-bends) underneath are dry, without water in the U-bends odours are free to enter the room.

Thank you, its a start, I will try this tonight.....
 
  • Like
Reactions: rpm
If you can`t see the soil stack pipe rising from outside the house above the highest window then it has to be internal, check in any boxing in the loft around 6"x 6" or bigger.
 
If you can`t see the soil stack pipe rising from outside the house above the highest window then it has to be internal, check in any boxing in the loft around 6"x 6" or bigger.

Nothing outside and I have checked in the loft there is nothing, there is no internal boxing either. I can only assume it is behind a wall and plastered in!!! But if I am to disrupt the plaster/walls - it is knowing where to start as nothing is evident!!
 
It could be something as simple as they've just dried out as the house hasn't been lived in for a month etc ??

Run the taps for a couple of mins and all of the appliance eg washing machine dishwasher etc should sort it if not there's a problem

Do you mean run the taps all at the same time? I have been in there a good few weeks now and I haven't used the dishwasher (there are no smells eminating from the area of the dishwasher though) perhaps I will put it on tonight - worth a try!! Thank you ....
 
Nothing outside and I have checked in the loft there is nothing, there is no internal boxing either. I can only assume it is behind a wall and plastered in!!! But if I am to disrupt the plaster/walls - it is knowing where to start as nothing is evident!!
Any "odd" boxing in of a possible pipe being hidden in one of the bathrooms, thinking the pipe has been cut short for whatever reason and the AAV fitted there.
 
Do you mean run the taps all at the same time? I have been in there a good few weeks now and I haven't used the dishwasher (there are no smells eminating from the area of the dishwasher though) perhaps I will put it on tonight - worth a try!! Thank you ..
A good few weeks is long enough, check water is in the traps.
 
Yep if it was just dry taps they should of been sorted by now
 
Nothing outside and I have checked in the loft there is nothing, there is no internal boxing either. I can only assume it is behind a wall and plastered in!!! But if I am to disrupt the plaster/walls - it is knowing where to start as nothing is evident!!
As a last resort you could drill a small hole in the wall to one side of the toilet pans then use an Borescope / Endoscope to see if there is anything. Doesn`t have to cost much if you have a tablet or smartphone.
Endoscope 5.5mm LED Snake Inspection Camera Lens IP67 for Mobile Phone PC Laptop | eBay
 
As a last resort you could drill a small hole in the wall to one side of the toilet pans then use an Borescope / Endoscope to see if there is anything. Doesn`t have to cost much if you have a tablet or smartphone.
Endoscope 5.5mm LED Snake Inspection Camera Lens IP67 for Mobile Phone PC Laptop | eBay

Could I just ask.... for example if it is a dry trap on the dishwasher drain pipe - can the smell come up from all different points or would it only come up from the area where the dishwasher is plumbed?
 
Could I just ask.. for example if it is a dry trap on the dishwasher drain pipe - can the smell come up from all different points or would it only come up from the area where the dishwasher is plumbed?
Odours can`t travel through water.
 
Should only come where the dishwasher is but smells can travel in the air if there's boxing etc
 
Is the dishwasher plumbed into the undersink trap or is looped over a 32/40mm pipe standing vertical around 4ft high?
 
Is the dishwasher plumbed into the undersink trap or is looped over a 32/40mm pipe standing vertical around 4ft high?

I would have to check this as again it is behind kitchen units and blocked in but I am sure I could see something behind one of the drilled holes for the stopcock..... whatever happened to easy access to pipes :rolleyes:
 
  • Agree
Reactions: rpm
There are no smells in the dishwasher area and there are doors between this room and the utility where the smell is worst ..

Any chance of a pic of the sink and underneath eg pipework in the utility room ?
 
I would have to check this as again it is behind kitchen units and blocked in but I am sure I could see something behind one of the drilled holes for the stopcock... whatever happened to easy access to pipes :rolleyes:
If you cant see the vertical pipe near the dishwasher then look for something like this under the sink. With a Grey ribbed hose on the small side nozzle, hopefully with a metal clip keeping it in place. :)
Sink Trap with 135° Swivel Nozzle
 
Any chance of a pic of the sink and underneath eg pipework in the utility room ?

I can get a pic of what I can see ie directly under the sink but there are a lot of pipes behind the kitchen/utility unit carcasses which without cutting them out cant be seen/accessed - Is this the new way of fitting out houses - block all the plumbing in!!! Same in my bathroom where I also had a leak through the ceiling, I have had to disrupt floor tiles and the whole of the side of the bath was tiled with no access to the pipes so have had to disrupt all the lovely mosaic tiling too - Grrrr .....
 
I can get a pic of what I can see ie directly under the sink but there are a lot of pipes behind the kitchen/utility unit carcasses which without cutting them out cant be seen/accessed - Is this the new way of fitting out houses - block all the plumbing in!!! Same in my bathroom where I also had a leak through the ceiling, I have had to disrupt floor tiles and the whole of the side of the bath was tiled with no access to the pipes so have had to disrupt all the lovely mosaic tiling too - Grrrr ...

That's fine ta

Sometimes yes (some people don't like to see pipes)
 
Is this the new way of fitting out houses - block all the plumbing in!!! Same in my bathroom where I also had a leak through the ceiling, I have had to disrupt floor tiles and the whole of the side of the bath was tiled with no access to the pipes so have had to disrupt all the lovely mosaic tiling too - Grrrr ...

Grrrr indeed, welcome to our world ;)
 
I am going to try and upload the photos now.... Hopefully you remember our comments above....the white pipes are the under the sink where the dishwasher is in the next cupboard and the grey pipes are in the utility room where the terrible smells are coming from.... also the soil pipe run up through the utility room to the upstairs toilet.....

20170922_162820.jpg

20170922_162828.jpg

20170922_162844.jpg

20170922_163017.jpg

20170922_163038.jpg

20170922_163105.jpg

20170922_163113.jpg

20170922_163119.jpg

20170922_163123.jpg
 
Is this house Detatched, Semi, Terrace, or flat?

If it's semi , terrace or flat it may not be your drains causing the smell.
In fact it may not be drains at all.

Try pouring something with a strong odour, like mouthwash or Jeyes fluid or bleach (a whole bottle not just a drop), down the kitchen sink waste.

If the smell comes out in the affected rooms it confirms it's an open drain venting to inside. If it does you may be able to pin it down to a room.
 
My three penneth.

Issue is no vent to atmosphere for the soil stack...

Builders etc fit AAVs but do not understand the dual role of a soil stack. Suspect malodour coming back up or traps being sucked dry when something like WC being flushed causing odours to be smelt.

Action is to find the AAV, remove it and extend pipework so foul smells can be vented. The vent needs to be a min of 50mm but pref 4". Outside it must terminate at least 900mm above last opening window if within a certain distance - bugger cant remember!
 
My three penneth.

Issue is no vent to atmosphere for the soil stack...

Builders etc fit AAVs but do not understand the dual role of a soil stack. Suspect malodour coming back up or traps being sucked dry when something like WC being flushed causing odours to be smelt.

Action is to find the AAV, remove it and extend pipework so foul smells can be vented. The vent needs to be a min of 50mm but pref 4". Outside it must terminate at least 900mm above last opening window if within a certain distance - bugger cant remember!

Hi thank you for your reply. My plumber was of the same thoughts as you so he has extended part of the soil pipe (there was an easily accessible branch downstairs to which has has added an extension to the outside and upwards in the hope that this would solve the problem (by venting out this way) without having to break into all my plastered walls to find the top of the soil pipe (as its not in the loft and no obvious evidence elsewhere so has to be in the walls?) So for 4 days there was no smell and today it has started again. I am back at the beginning again now. Would you suggest now finding the end of the soil pipe (by breaking into the walls) and capping it off at that point so it has to go out of the extended part he has just put in?? Or could it be something else? Its a massive nuisance.
 
On photograph 4, the convoluted grey pipe appears to be wet. Also there is evidence of corrosion on the compression fittings. Where is this water coming from?

What do the smells smell like? For example, are they 'mushroomy' (fungus or rotting wood), 'eggy' (hydrogen sulphide) , rotting vegatables (mercaptans), etc. ?
 
what size pipe has been used to vent? it needs to be 2" (50mm) minimum. 40mm will NOT suffice.
PLUS you should fit anti vac traps to basins & sinks.
why? because its quite likely that a trap is having its seal sucked out. if you fit anti vacs everywhere you can it helps reduce that impact by allowing more air into the system.
 
Status
Not open for further replies.

Reply to Terrible smells in new house I have moved into in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Creating content since 2001. Untold Media.
Back
Top