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Japanese Knotweed Heat Map


New heatmap shows risk of Japanese knotweed for each postcode across the UK

We're delighted to present to you a unique new Japanese Knotweed tracking tool which has been developed by knotweed experts Environet UK, providing an interactive online heatmap of sightings across the UK.

Exposed: The Japanese Knotweed Heatmap - click to view the map or scroll down - is a valuable resource for property professionals involved in residential transactions, including conveyancing solicitors, developers and surveyors, as well as those looking to purchase a property concerned about Japanese Knotweed.

The map has already been populated with thousands of sightings by Environet, which has operated in the residential and commercial knotweed remediation sector for more than twenty years, with new sightings being uploaded daily following blanket press coverage of the launch including this piece in the Mail Online

The only live tool of its kind, Exposed allows users to enter a postcode to discover the number of reported knotweed infestations nearby, with hotspots clearly visible in yellow or red.

Scroll down to see the tool in action...


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Where a high number of knotweed sightings appear nearby, a simple site survey can ascertain whether knotweed is present, or if not visible, the risk of it being present. In either case a treatment or monitoring programme can be provided with a 10-year insurance-backed guarantee, the minimum requirement of most banks and building societies for lending on knotweed affected property.

Nic Seal, Founder and MD of Environet, who created Exposed, said:

“This heatmap will enable us to build a nationwide picture of the Japanese knotweed problem and help property and legal professionals to assess the risk locally. The site is already well populated, but this is an ongoing project. The more people who report sightings, the more effective it will become."


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