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The crisis over unsafe concrete in schools may extend beyond the education sector to other types of public buildings, experts have warned.

They say the scale of the problem with reinforced autoclaved aerated concrete (RAAC) is “much bigger than schools” and could include hospitals, police stations, and court buildings.

Even private sector sites such as shopping centres and residential tower blocks could also be impacted, experts say.

Meanwhile, Labour MP Dame Meg Hillier, chairwoman of parliament’s Public Accounts Committee, has warned the issues with RAAC in schools are just the “tip of the iceberg” of maintenance issues for sites across England.

It comes after 104 schools and colleges were told by the Department for Education (DfE) to partially or fully shut buildings just days before the start of the new school year over fears about the safety of facilities built with RAAC.

Labour has called for an “urgent audit” across the public sector estate, while the Liberal Democrats say the public must be given “urgent clarity” over whether hospital wards and buildings could also be forced to close.

Politics latest: More classrooms could shut over collapsing concrete fears

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Concrete crisis explained

RAAC is essentially a lighter-weight form of concrete, used to build roofs, schools, colleges and other buildings from the 1950s until the mid-1990s,

But experts fear that the material has now reached the end of its shelf life and is liable to collapse.

Though not confirmed, it is estimated that around 24 schools in England have been told to close entirely because of the presence of RAAC.

Schools minister Nick Gibb has admitted more could be asked to shut classrooms.

But the problem could be far wider than just schools, experts say, with other buildings at risk of “sudden and catastrophic collapse” if RAAC is not removed.

Chris Goodier, professor of construction engineering and materials at Loughborough University, said the “scale of the problem is much bigger than schools”.

What is Reinforced Autoclaved Aerated Concrete?

Reinforced Autoclaved Aerated Concrete – handily shortened to RAAC – is essentially a lightweight form of concrete.

It was used to build roofs, schools, colleges and other buildings from the 1950s until the mid-1990s, according to GOV.UK.

In comparison to traditional concrete, RAAC is weaker. It is made in factories using fine aggregate, with chemicals to create gas bubbles and heat.

Both the material properties and structural behaviour differs significantly from traditional reinforced concrete.

In 2019, the Standing Committee on Structural Safety highlighted the significant risk of failure of RAAC planks.

Three years later in 2022, the Office of Government Property sent a safety briefing notice to all property leaders, saying that “RAAC is now life-expired and liable to collapse”.

Chris Goodier, professor of construction engineering and materials at Loughborough University, said: “It is RAAC from the 1950s, 60s and 70s that is of main concern, especially if it has not been adequately maintained.

“RAAC examples have been found with bearings (supports) which aren’t big enough, and RAAC with the steel reinforcement in the wrong place, both of which can have structural implications.”

He says it could cover public sectors including health, defence, and justice, as well as some private sector buildings.

NHS providers have already identified 14 hospitals, which were constructed “either wholly or in major part with RAAC”. Seven of these are considered “critical” and not fit for purpose beyond 2030.

Three buildings operated by Police Scotland have also been found to contain RAAC after an investigation of 65 structures.

Matt Byatt, president of the Institution of Structural Engineers, says any high-rise buildings with flat roofs constructed between the late 1960s and early 1990s may also contain RAAC.

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‘New evidence’ to shut unsafe schools

According to Dame Meg, the DfE has been aware of a “significant problem” with RAAC since a roof collapse in 2018.

She warns that this week’s announcement could have a “significant impact” on the department’s wider school maintenance programmes.

Read more:
Disruption at primary school with unsafe concrete to last until 2025
Which other buildings are at risk of concrete collapse?
Ministers urged to publish full list of impacted schools

In an opinion piece in The Times newspaper, she writes: “At our hearing in July it was clear that officials were being thorough with the proportion of school buildings they were working on, including the surveys of 600 schools with RAAC which have led to this week’s decision.

“But this is the tip of the iceberg of a failing school estate in England. Most of the 700,000 pupils currently being educated in substandard buildings are not in RAAC buildings and will now be waiting longer for the improvements they need.”

A taped-off section inside a school affected with reinforced autoclaved aerated concrete (RAAC)
Image:
A taped-off section inside a school affected by reinforced autoclaved aerated concrete (RAAC)

Damage inside Parks Primary School in Leicester which has been affected with sub standard reinforced autoclaved aerated concrete (Raac)
Image:
Damage inside Parks Primary School in Leicester which has been affected with sub standard reinforced autoclaved aerated concrete (RAAC)

Around 104 schools or “settings” in England found with concrete prone to collapse are set to be closed or disrupted – on top of 52 that have already been affected this year.

The government says the schools needed to close because of safety fears, which have arisen due to concrete failing “with no warning”.

While the DfE has previously focused on remediation, Mr Gibb says the department is now taking the “cautious approach” that all of the concrete should be removed.

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Labour is calling on ministers to “come clean” and publish the full list of schools that will be impacted, as they have not yet been publicly named.

It has also accused the government of “neglect and incompetence” over their handling of the issue.

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UK takes ‘massive step forward,’ passing property laws for crypto

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UK takes ‘massive step forward,’ passing property laws for crypto

The UK has passed a bill into law that treats digital assets, such as cryptocurrencies and stablecoins, as property, which advocates say will better protect crypto users.

Lord Speaker John McFall announced in the House of Lords on Tuesday that the Property (Digital Assets etc) Bill was given royal assent, meaning King Charles agreed to make the bill into an Act of Parliament and passed it into law.

Freddie New, policy chief at advocacy group Bitcoin Policy UK, said on X that the bill “becoming law is a massive step forward for Bitcoin in the United Kingdom and for everyone who holds and uses it here.”

Source: Freddie New

Common law in the UK, based on judges’ decisions, has established that digital assets are property, but the bill sought to codify a recommendation made by the Law Commission of England and Wales in 2024 that crypto be categorized as a new form of personal property for clarity.

“UK courts have already treated digital assets as property, but that was all through case-by-case judgments,” said the advocacy group CryptoUK. “Parliament has now written this principle into law.”

“This gives digital assets a much clearer legal footing — especially for things like proving ownership, recovering stolen assets, and handling them in insolvency or estate cases,” it added.

Digital “things” now considered personal property

CryptoUK said that the bill confirms “that digital or electronic ‘things’ can be objects of personal property rights.”

UK law categorizes personal property in two ways: a “thing in possession,” which is tangible property such as a car, and and a “thing in action,” intangible property, like the right to enforce a contract.

The bill clarifies that “a thing that is digital or electronic in nature” isn’t outside the realm of personal property rights just because it is neither a “thing in possession” nor a “thing in action.”

The Law Commission argued in its report in 2024 that digital assets can possess both qualities, and said that their unclear fit into property rights laws could hamstring dispute resolutions in court.

Related: Group of EU banks pushes for a euro-pegged stablecoin by 2027

Change gives “greater clarity” to crypto users

CryptoUK said on X that the law gives “greater clarity and protection for consumers and investors” and gives crypto holders “the same confidence and certainty they expect with other forms of property.”

“Digital assets can be clearly owned, recovered in cases of theft or fraud, and included within insolvency and estate processes,” it added.