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specialist control services

Japanese knotweed removal SITE SUPERVISION

When you already have all the in-house machinery and skills, but require qualified technicians to oversee your operations, you can rely on our Japanese knotweed accredited experts to provide professional site supervision in Japanese knotweed removal.

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When the situation or need arises, and where the client has machinery and labour on-site, we can provide site supervision (Watching Brief) to ensure removal in accordance to the Property Care Association (PCA) Code Of Practice.

operational compliance

On some commercial projects, the principle contractor or another sub-contractor may wish to employ professionals to watch over operations carried out onsite. In these instances companies come to us for:

  • A Knotweed Management Plan
  • Site Specific Risk Assessment and Method Statement (RAMS)

We would then provide a site supervisor (Watching Brief) to oversee others in the execution of the works, in accordance with the Knotweed Management Plan, Method Statement and the Property Care Association (PCA) Code of Practice.

Our working Site Supervisors have over 12 years’ experience in the knotweed industry and provide a professional but courteous Watching Brief service to ensure the project is completed within compliant and best practices.

Construction workers walking towards a building in development


Make the most of our knowledge and expertise by utilising the full watching brief package which includes:

  • Adherence to the Property Care Association (PCA) Code of Practice
  • Debrief of all relevant site personnel on the works proposed (Tool Box Talk)
  • On-site Practical Logistics Management
  • Working supervision ensuring correct procedure and practices
  • Practical installation of root barriers (where required)
  • Practical Root Barrier Heat Welding and Bonding (where required)
  • Site Diary and Full Record of Works
  • Waste Records Management and Recording (where required)
  • Practical Completion Decontamination
  • Completion Reporting

On completion, we will provide a completion report or update the Knotweed Management Plan, with record of the works undertaken. This can then be included in the development Operational and Maintenance Manuals.

Excavator working on clearing a site

PROJECT EXAMPLE: watching brief in North London

Sometimes a watching brief is what’s required. When a client wishes to use his own contractors but needs expert supervision, we send one of our excavation supervisors to oversee the works. In this case study we share feedback from a private developer about our flexible approach, here’s a snippet from the client:

Mr Cullen stated, “From my perspective, it’s comforting to know that a contractor is client focused and is willing to adapt their service to provide a saving to a customer, and not just be totally focused on profit. It is my belief that this works in your favour in the long run, as I will always recommend your company and will use you again for sure (hopefully not) should the need arise in the future. Thank you also for the professional manner in which this entire process has been handled, it has been a pleasure to deal with you and the rest of the team.”

watching brief case study


To help your operation run smoothly, we are also able to provide some supplementary services and materials. Where the knotweed remediation requires it we can also supply the following alongside of supervision services:

  • Cart-Away of Japanese knotweed (Controlled Waste)
  • Supply of Porous or Non-Porous Root Barrier
Dumper truck ready to unload soil or ground at construction site.

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get in touch to discuss your site supervision requirements

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If we provide Watching Brief services in normal situations we will be able to provide the site our Guarantee Agreement on completion of the works. Our guarantee periods are 2 to 35 years in duration, the duration is chosen by the customer in relation to their requirements (i.e. 12 years to cover NHBC liability periods) or a third parties requirements (i.e. a lender requiring 25 Years to cover a full mortgage term).



Our friendly team can help with any suspected knotweed issues.