Knotweed Barrier 600 is an impermeable woven HDPE root barrier coated with a triple layer of film LDPE to prevent roots from lifting concrete, tarmac or other paving. Designed to contain invasive Japanese Knotweed, it has a 25-year design life once buried, and conforms to the Environment Agency’s ‘Knotweed code of Practice’.

An amendment to the Anti-social Behaviour, Crime and Policing Act 2014 includes Japanese Knotweed and other invasive non-native plants. 

Knotweed Barrier 600 can be installed vertically around the perimeter of a development to prevent lateral ingress of roots, or horizontally over the development to protect roads, paved surfaces, floored areas and buildings.

Supplies in 1.83m x 50m rolls, and made-to-order panels up to 40m wide x 150m long.

Applications

  • Protecting pavements, tarmac and concrete from root damage

  • Containing invasive species such as Japanese Knotweed

  • Lining trenches around pipework and cables

  • Perimeter protection for developments

  • Horizontal installation under roads, paved areas and buildings

Dimensions

Rolls: 1.83m x 50m

Panels: up to 40m wide and 150m long (made to order)

Materials

Woven HDPE with triple layer LDPE film

Performance

25-year design life when buried

Accreditations

Conforms to Environment Agency’s Knotweed Code of Practice