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Quote for replacement of soil stack

Discussion in 'Trade Talk' started by dea81, 24 Apr 2020.

  1. dea81

    dea81

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    Looking for a second opinion on a quote for replacement of the soil stack and remedy of the current plumbing setup which resulted in a leak from the durgo valve in the loft eaves (we have a loft conversion with ensuite toilet). It's been difficult to get any tradesmen out to look at a job at present so I was hoping someone might be able to have a look and see if they agree with the price.

    Job Description:

    The existing soil and vent pipe serving the upper floor bathrooms has a plant growing out of one of the joints causing a blockage. The soil and vent pipe is to be replaced with a new item and branches connected to the existing toilets and sanitaryware on first and top-floor ensuite.

    The existing air admittance (durgo) valve within the eaves will be removed and the pipe extended over and above the dormer roofline to ensure that there are no mechanical valves which could be prone to failure in extremes of weather.

    Existing soil pipe connection in the roof void to the top floor en-suite is to be extended closer to the toilet to allow a short pan connector to be installed in place of the existing flexible pan connector which has previously failed.

    Work required:

    Overall height 8m (Approx.)

    Disconnect the existing sanitaryware and set aside
    Remove a small section of the roof tiles (set aside for later refitting), batten and underfelt above the existing soil stack, where this is terminated in the roof void behind the en-suite shower room
    Dismantle the existing stack
    Connect the ground pipework adapter
    Assemble the stack from the ground level and extend up the wall, installing branches to connect to the existing sanitaryware
    Fit the branch pipework as specified
    Fix the boss straps and small bore waste connections if specified
    Fix to the wall at the specified centres
    Connect to the existing sanitaryware as specified and test to ensure no leaks
    Action any installation specifics as set out above
    Refit roof tiles using new batten and underfelt

    Total cost (excluding building access scaffold): £1 806.12 (inc. VAT)
     
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  3. denso13

    denso13

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    Doesn't sound unreasonable but impossible to tell.
     
  4. Stivino

    Stivino

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    Get another two or three quotes then you will have a better idea.
     
  5. noseall

    noseall

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    Is the existing stack asbestos?
     
  6. sounds like a lot of money , especially when you add the cost of a scaffold.
    that being said , you’ve outlined a fair amount of materials and a fair amount of work, plus this sounds like a 2 man job .
    as said it’s impossible to tell without seeing all the ins and outs and pitfalls. the more quotes you get the better , as said.
     
  7. bobasd

    bobasd

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    OP,
    it would help if you posted a pic of the stack - a ground to eaves shot.
    Presume the stack is CI.
    Is the WC pan connection a CI hub?
    No scaffold necessary - is there access for a tower?
     
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  8. Nige F

    Nige F

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    Likely, given the larger joints - probably a buddlea seed got in it.
     
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  9. dea81

    dea81

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    Hi all.

    Thanks for your replies. The reason I haven't had more quotes is that it's difficult to get people to come and look at it at present. The existing stack is cast iron and I guess the branch to the first floor WC pan probably is too. The loft connection is via a timesaver coupling as I assume the ci pipe is imperial guage. I've attached a few photos for info.
     

    Attached Files:

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  11. noseall

    noseall

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    Eh? You have just contradicted yourself.

    To the OP: Tower scaffold essential.

    Could be done in one well prepared day but I'd allow for two as you need to account for a lot of faffing and fetching and site clearing etc. Probs be £1'500 round these parts.
     
  12. dea81

    dea81

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    Would that include scaffold or scaffold on top?
     
  13. noseall

    noseall

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    Scaffold on top. We'd use our local scaffolder to build a tower for us - about £300.
     
  14. bobasd

    bobasd

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    Towers are distinct from scaffs as you well know, and the names have been separate and distinct since i started in this game.
    I've never heard anyone, scaffolder's included, refer to say an alloy tower as a Scaffold Tower - the contract might, the literature might but no one on site.

    No contradictions here pal but i do seem to be seeing the contradiction of a previously fair minded man into a potential troll?

    OP,
    Diy'ers or anyone else can hire a suitable alloy tower for that job for £130 approx - delivered & returned.
     
    Last edited by a moderator: 27 Apr 2020
  15. bobasd

    bobasd

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    dea81,
    No problem at all with that location - for erecting an alloy tower to safely cut and remove the stack - short section by short section from the top.
    That CI stack is rotten and great care will need to be taken in case whole sections shatter and collapse.
    The first floor WC connection can wait until the stack has been dropped.
    Once the external connecting bend is cut/removed the en-suite can also wait.

    Where the pipe enters the ground it will have to be dug out - all the way down to the connection with what should be a slow bend.
    It could be a salt glaze bend with a hub connection - the whole bend will need removing and replacing with a plastic bend.
    If BCO is involved they will want to see the bend.
    Dont allow the plumbers to just cut the soil pipe above ground.

    These items, and a few bits more, are everyday work for my firm - we are professionals, like some of the respondents above, not half baked DIY trolls who spend their time desperately googling for their next wrong answer.

    Giving telephone prices on a job like this wont fly - even the guy on site who you got to quote seemed to miss quite a bit.
     
  16. noseall

    noseall

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    I just typed in 'tower scaffold' and guess what..

    Please stop digging holes and back-peddling. Its embarrassing.
     
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  17. it’s actually a rest bend. a slow bend is incorrect.
     
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