What is a deleterious material?
Materials tat can degrade with age - causing structural issues
How do you identify deleterious materials?
Signs include:
- Brown staining on concrete, 1960/70’s buildings and modern buildings
What are some examples of deleterious materials?
-Reinforced Autoclaved Aerated Concrete (RAAC)
-High alumina cement
-Woodwall shuttering
-Calcium Chloride
What is RAAC?
Reinforced Autoclaved Aerated Concrete
-Used in construction often in 1960s and 1990s
-Present in many public sector buildings (schools and hospitals)
-Susceptible to deterioration over time, especially in harsh conditions
-Can lead to structural issues
What is a Hazardous Material?
Materials that are harmful to health
What are some examples of hazardous materials?
-Asbestos
-Lead Piping/Paint
-Radon gas
What do you do if notice hazardous materials?
Recommend specialist reports and make appropriate assumptions in my advice
Disposal of Water
-Surface water runs off into the water course, such as a soak away or storm drain
-Foul water drains from soil pipes into a sewerage system (public or private)
-Statutory undertakers own a private sewer from the boundary of the property
What is Japanese Knotweed?
-Invasive plant which can damage hard surfaces (foundations and tarmac)
-Not easy to control & expensive to remove it
-Property lenders may not loan it if it is present
How can you notice it?
-Purple/Green hollow stems
-Green leaves
How is it disposed?
-Must be done legally
-Chemical treatment
-Digging it out and removing it to a licenced landfill
-As set out by Environmental Protection Act
What does the RICS Professional Standard: Japanese Knotweed and Residential Property, 2022 set out?
-Provide guidance based on market informed best practice with up-to-date knowledge
-Decision tree based on risk level to help valuers determine appropriate action
-Objective categorisation of JKW infestations for potential lenders
What are the punishments for allowing it to spread? (Wildlife and Countryside Act 1981)
Magistrates Court:
-5k fine
- 6 months imprisonment
-Both
Crown Court:
-Unlimited fine
-Max prison sentence of 2 years
-Both
Local Community:
- Grant Community Protection Notice
If ignored
-Fines 2.5k person 20k company
Do you know any other invasive plants?
-Hogweed
-Himalayan Balsam
JKW Case Law
Williams vs Network rail 2018
-Court of Appeal held Network Rail liable for cost of treating the invasive plant and
-damages loss of use for of neighbours property
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