Reinforced autoclaved aerated concrete (RAAC)
RAAC is a type of concrete used between the mid-1950s to the mid-1990s. It was installed in a variety of properties and was most commonly used in the construction of flat roofs. It is not as durable as other types of concrete and has an estimated life span of 25 to 30 years. The life span can be shorter where imperfections, water ingress, temperature changes, or damage occurs.
Due to recent sudden failures of RAAC roof structures in some schools in the UK, professional bodies have urged responsible parties to identify where RAAC exists within their properties.
The Council has reviewed its estate and surveyed the properties most likely to be affected by RAAC.
You should ensure that regular inspections are carried out at your property and that it is maintained in good repair at all times. Where you suspect that RAAC is present and no RAAC assessment has been carried out you should notify us at the earliest opportunity. Where remediation requires to be carried out due to RAAC the responsibility for this will be determined by your lease agreement.
Further information on managing the risk from RAAC is available from the Health and Safety Executive.