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ARTICLE · 27 OCTOBER 2023

What Is Raac And Why Is It A Cause For Concern?

Gowling WLG
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Known as 'bubbly concrete', RAAC or Reinforced Autoclaved Aerated Concrete is a cheaper, weaker and less durable alternative to conventional concrete.

United KingdomReal Estate and Construction

Known as 'bubbly concrete', RAAC or Reinforced Autoclaved Aerated Concrete is a cheaper, weaker and less durable alternative to conventional concrete. Used extensively in the construction of public buildings from the late 1950s to the 1990s, it was popular due to its lighter weight and better thermal insulation properties.

However, due to the nature of the material, RAAC has a much shorter lifespan than alternatives. Experts have warned that after 30 years, buildings constructed using it should be repaired or remediated to remove the RAAC or to reinforce their structure. One key question arising has been who should bear the cost of such works?

Where a public building (such as a school or hospital) is involved, the question of funding is likely to sit with the relevant local authority or public body.

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