Japanese knotweed

September 24, 2019

Chances are, if you have heard what this is, you have heard how destructive it can be. Japanese knotweed is a large species of herbaceous perennial plant of the knotweed and buckwheat family Polygonaceae. It is commonly known as Asian knotweed or Japanese knotweed. It is native to East Asia in Japan, China and Korea. In North America and Europe, the species has successfully established itself in numerous habitats and is classified as an invasive species in several countries.

Japanese knotweed can grow up to 10cm per day, and because of this rapid growth, it has been known to cause damage to building structures and substructures by targeting weak points, such as cracks in masonry, and attempting to grow through them. Typical damage from Knotweed includes; damage to patio, terrace or tarmac, damage to the building’s foundation and damage to walls.

All of this can seriously affect the value of a property or even worse destroy the property if now discovered soon enough.

A surveyor won’t remove the knotweed but, they can help recommend the courses of action to take subsequent to its discovery, saving the homebuyer time and potentially, a lot of money.

This is one of the more extreme examples but a potential one none-the-less. Sidedoor surveyors are all RICS regulated and vetted so you can be sure you are getting the best of the best. A survey is always in your favour and in your best interest.

Check out our other blog on the common issues found by a surveyor to find out more.