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Tree roots and drains

I have recently brought a semi detached house that has not been lived in for 8 years - the elderly lady next door is very proud of her established garden!!! There are many out of control shrubs and a 20ft eucalyptus tree which has already been 'topped' planted 10 feet from my kitchen wall, our shared drains run under the kitchen floors- when my new bathroom was fitted the plumber noted a blockage - the local water board have removed 1.5 mtr of bearded root but they have to return with bigger capacity machinery - my concern is how do I establish that the problem is from her trees/shrubs [even though my garden was overgrown there is nothing that would cause any damage] I know I need to have a conversation with her and her family but I feel I need some sort of professional evidence as a back up but dont know where to start.  

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  • Ladybird4Ladybird4 Posts: 37,906
    Would it be possible to get a report from the plumber/Water Board?
    Cacoethes: An irresistible urge to do something inadvisable
  • PosyPosy Posts: 3,601
    Whoever examined the drains will have put down one of those cameras on wheels and will have pictures of the blockage. However, when we had this problem the contractor lined the drain with a stronger, root-resistant insert and we haven't had any further problem for 20 years or so. No trees were removed for this.
  • Ladybird4Ladybird4 Posts: 37,906
    That is good to know Posy. My neighbours have a gigantic Leylandii in the front of their house between our two gardens and they have had no end of trouble and had to have their drains cleared last year. So far my drains haven't been impacted but I will store that informstion - just in case. Sorry yelsel, didn't mean to poach your thread!
    Cacoethes: An irresistible urge to do something inadvisable
  • BenCottoBenCotto Posts: 4,718
    We too had a problem with tree roots blocking the drains. Like Posy, once the blockage was jetted away, the drain was then lined with an inner sleeve.

    When you search online for a drainage engineer to investigate the problem, avoid companies with an 0800 phone number. They are likely just to be agencies who will, on your behalf, connect you with a local firm but bump the price up by 50%. Go straight to the local company.
    Rutland, England
  • Ladybird4Ladybird4 Posts: 37,906
    Another good tip.
    Cacoethes: An irresistible urge to do something inadvisable
  • yelsel46yelsel46 Posts: 3
    Ladybird4 said:
    Would it be possible to get a report from the plumber/Water Board?
    Morning LB4 thank you for your interest in my issue. I am hoping the water board will issue a report when they have finished, they are only involved because it is a shared drain the manhole is on the neighbors drive so she is aware of the situation but she has refused any excavation or laying of new drains [knee jerk reaction as she cannot refuse access to the drain] but there is no guarantee the board will undertake work on the part of the drain which is not shared ie from her internal wall to my sink approx 2mtr which will be at my expense if I cannot prove the root damage is as a result of her act or omission - inappropriate planting or maintenance and am not sure a waterboard report will be adequate but I am happy to collect evidence from everywhere. 
  • yelsel46yelsel46 Posts: 3
    Picidae said:
    We too had a problem with tree roots blocking the drains. Like Posy, once the blockage was jetted away, the drain was then lined with an inner sleeve.

    When you search online for a drainage engineer to investigate the problem, avoid companies with an 0800 phone number. They are likely just to be agencies who will, on your behalf, connect you with a local firm but bump the price up by 50%. Go straight to the local company.
    Hi Picidae - thank you for that valuable information, are the waterboard not responsible for lining/replacing their assets - I was hoping to only have to fund my 2 mtr section as worst case and even then make a claim on her insurance [assuming she is insured]   

  • Loraine3Loraine3 Posts: 579
    I had a problem with blocked drain which came from next door and through our property and was told I didn't have to pay as it was a shared system. Problem was pitch fibre pipes which were damaged inside and had to be replaced. A mini digger came and dug a trench right across my lawn!
  • Lizzie27Lizzie27 Posts: 12,494
    You may find your house insurance policy will cover the cost of the inspections/tree reports etc. When our neighbours had similar problems, the tree specialists were able to identify which tree roots were causing the problem.
    North East Somerset - Clay soil over limestone
  • BenCottoBenCotto Posts: 4,718
    As I understand it, the water company (water boards disappeared over 40 years ago) are responsible for drains and sewers beyond the boundary of the house but pipework under your garden has to be repaired at your expense.

    As Lizzie says, see if your insurance company will pay for any investigative work. However be prepared for a hefty excess, maybe £500, and it is almost certain that your premium will increase in future years if you make a claim. Unfortunately switching companies will be a challenge if you have made a recent claim. 

    You might have to simply bear the cost. Our repair was done about 3 years ago. The blockage was caused by tree roots which had penetrated the drain running below the conservatory. Unblocking this with high pressure jet blast was about £300 if I remember correctly. We then accepted the contractor’s recommendation of fitting a reinforced inner sleeve. The bill for this was around £1200 and incorporated the cost of an extra man hole cover and inspection pit.

    What should have been a day’s work became a week long disaster. When the flexible liner had the solution poured down the drain to solidify it - or whatever they did, I’m not sure - the engineer did not realise the liner was kinked and, when solidified, formed a complete blockage below the conservatory floor. Our toilets were now effectively non operational. The contractor hurriedly set up an impromptu sewage collection system on the terrace (a pump and a line of interconnected dustbins) and then set to work trying to clear the blockage. This was achieved after three or four days of heavy toil and even heavier swearing. Had it not been cleared a new drain would have to have been laid around the conservatory and under our newly laid terrace. To the contractor’s credit he charged us the agreed price even though the work took about four times longer than anticipated.

    The insurance company, Tesco, paid up without demur, though not for the new inspection chamber as that was deemed to be ‘betterment’. What particularly impressed me was the speed of settlement. I received the bill on Saturday and electronically forwarded it to Tesco the same day. I phoned them soon afterwards to check it had arrived. It had, and they agreed to pay me at once. Within 30 minutes the money was in my account. 15 minutes after that it was out of my account and into the bank of the drainage company. Who would want to go back to the old way of settling accounts?
    Rutland, England
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