Government and the bigger picture

    Spray foam claims we checked against the original sources

    Last reviewed 2 November 2026 by Jan Pospisil, DEA qualified (ABBE Level 3)

    Reviewed weekly: every fact checked against the news and its sources. Page last updated 24 October 2026.

    Includes time-sensitive information: checked in the weekly sweep

    Independent: SprayFoamCheck doesn't install or remove insulation and takes no referral fees.

    Short answer

    Many of the most repeated spray foam claims don't match their sources. The figure of an estimated 250,000 homes is a 2021 upper estimate with no published method, the government says most foam was fitted outside its schemes, and most of the 20 largest lenders said in 2024 that they decide case by case[1][2][3].

    Your next step:Check your own loft, not the headlines

    On this page

    Key facts

    • The figure of around 250,000 homes is an RPSA/PCA upper estimate from December 2021, with no published method[1]
    • The government says most spray foam loft insulation was installed outside its schemes (January 2026)[2]
    • BBC survey of the 20 largest lenders (November 2024): five would not lend; most others decided case by case[3]
    • Nationwide's published criteria (read October 2026) offer a route other than removal: a full evidence pack or an invasive inspection[4]
    • Government moisture modelling (February 2024): low risk for open-cell foam fitted to BS 5250:2021; high risk sprayed straight onto tiles or slates[5]
    • The BBA says a product approval does not automatically mean an installation meets Building Regulations[6]
    • UKAS suspended its recognition of the BBA from 26 February 2026, at the latest until 25 November 2026[7]
    • We found no dataset behind any removal cost; the most quoted figure is a trade platform's AI-generated guide price (July 2026)[8]

    How were these claims checked?

    Each claim was traced back to the document it seems to come from, such as a law, a government report, a product approval or a lender's published criteria,…

    Which of the most repeated spray foam claims don't match their sources?

    These are ten of the statements on this page found on the most of the 50 websites; none matches its source as worded.

    Do lenders really refuse homes with spray foam?

    Some do. Most of the 20 largest lenders said in November 2024 that they decide case by case, and Nationwide publishes a route other than removal; one…

    How many homes have spray foam, and did government schemes pay for it?

    Nobody knows exactly: the only published estimate is an upper bound, and the government says most spray foam was installed outside its schemes.

    Does spray foam cause condensation or rot? Moisture and performance claims

    It depends on how the roof is built: government modelling found low risk for open-cell foam fitted to BS 5250:2021 and high risk where foam is sprayed…

    Is spray foam a fire or health risk? Claims checked

    HSE's health warnings concern spraying, when isocyanate chemicals are released; several claims below go further than their sources.

    What do product approvals, codes and warranties really cover?

    A product approval covers a product and the installation it describes; it is not proof that your installation followed it.

    What's true about spray foam removal and what it costs?

    We found no dataset behind any removal cost; the most quoted figure is a trade platform's AI-generated guide price.

    Are the scam warnings and group-claim stories accurate?

    The scam warnings are well documented; stories about mass legal action are not.

    What about consumer rights, government help and costs?

    Several of these go beyond the law or the government's plans, and none of the cost ranges has a traceable source.

    What to do next

    • If you read one of these claims on a removal firm's site or hear it on a cold call, check the linked guide before you agree to anything.
    • Ask anyone who quotes a figure where it comes from and when it was published.
    • Lender positions change. Check the lender's current published criteria, or ask a mortgage broker, rather than relying on a list online.
    • If someone tells you the foam must come out, get an independent look at your loft first: should you remove spray foam?
    • If you want independent evidence of what is in your loft, see the inspection below.
    Your next step

    Check your own loft, not the headlines

    Figures quoted online say nothing about your roof. An independent inspection records what is actually there: the foam type where it can be identified, what it is sprayed onto, and moisture readings at points that can be reached.

    Spray Foam Inspection£295

    Report within 48–72 hours of inspection. Independent: no installation, no removal, no referral commissions.

    Travel included within about three hours of the North West; a fixed supplement further away, shown with your total before you book.

    It records what can be seen and measured. It can't see timber under the foam, and it isn't a report for a lender.

    Questions first? Call or WhatsApp 07349 718935 WhatsApp (opens in a new tab)

    Or start with your situation

    Go deeper: the original sources

    4 original documents, each with a note on what it covers.

    Questions people ask

    Is spray foam banned in the UK?

    No. We found no UK rule banning spray foam or requiring existing foam to be removed, and no UK product recall. An ombudsman noted in 2025 that spray foam has not been prohibited[78], and the government says a correctly installed product should not need removal[63]. Some restrictions exist: one new-build warranty provider won't accept it in roofs[24], and spraying foam under the roof covering of a listed building needs consent[53].

    Do all lenders refuse spray foam?

    No. In the BBC's survey of the 20 largest lenders (November 2024), five said they would not lend and most others decided case by case on the valuer's report[3]. Some publish a route (as published, read October 2026): Nationwide reconsiders with full installation evidence or an invasive inspection[4], and the Co-operative Bank considers open-cell foam under conditions[30]. Positions change, and no one can promise what a lender will decide.

    Does spray foam always rot roof timbers?

    No. Government modelling (February 2024) found low risk for open-cell foam fitted to BS 5250:2021 and high risk where foam is sprayed straight onto tiles or slates[5]. That is modelling, not a count of real roofs[46]. Foam also hides the timber behind it, so its condition can't be fully seen without exposing it[33].

    Sources

    78 sources, numbered as cited in the text. Tap a footnote number to jump to its source.

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