The Government responded on 21 February 2024 to the Competition and Markets Authority's consumer protection review of the green heating and insulation sectors, in a written statement to Parliament. The CMA published an update on the standards landscape the same day, and a Commons debate on cavity wall insulation under government grants was held on the same date1.
The CMA's update said standards bodies had engaged positively with its principles but that more remained to be done. The Government's statement accepted the findings on both consumer experience and standards1.
"The Government acknowledges the findings on consumer experience, where some consumers may face difficulties when carrying out retrofit work, and on standards, where the landscape offering protections for consumers can be seen as complex and confusing to navigate."
In the Commons debate that day, the Government acknowledged there had been poorly executed cavity wall insulation installations and said it was fully committed to protecting all consumers with insulation products in their homes, and to improving the consumer journey regardless of housing tenure or how installation work is funded1.
The statement summarised the actions being taken to protect consumers undertaking home retrofit work.
Cavity wall insulation is installed under supplier-led schemes across Great Britain, the Energy Company Obligation and the Great British Insulation Scheme, and under grant schemes in England: the Green Homes Grant Local Authority Delivery scheme, launched in August 2020 with the aim of upgrading 50,000 low-income households, Home Upgrade Grants and the Social Housing Decarbonisation Fund1.
Measures installed under ECO since 1 January 2020, GBIS, HUG and LAD are covered by TrustMark or similar certification bodies. That requires installers to provide insurance against the tradesperson going out of business, a minimum two-year warranty for work, and a minimum 25-year guarantee for certain measures installed under ECO1.
| Figure | Value |
|---|---|
| Homes in Great Britain with cavity wall insulation, end 2022 | 14.8 million (71% of homes with cavity walls) |
| Cavity wall insulations under ECO, 2013 to 2023 | 1.04 million (27% of all heating and energy efficiency measures under the scheme) |
| ECO cavity wall insulations, 2014 peak | 316,400 |
| ECO cavity wall insulations, 2023 | 11,100 |
| Uninsulated cavity walls rated easy to treat | 3.8 million |
| Uninsulated cavity walls rated hard to treat | 1.3 million |
Source: House of Commons Library, citing DESNZ statistics1.
There is no government compensation scheme for problems with cavity wall insulation. Householders with problems are advised to approach the original installer first, then check for a guarantee, such as one from the Cavity Insulation Guarantee Agency, which provides 25-year guarantees for work by its registered installers and has a published complaints procedure. The Government published guidance in 2019 for householders who suspect faulty installation1.
Why it matters for households
Insulation is one of the few home energy measures that reduces demand rather than shifting it, so the quality of installation and the route to redress when it goes wrong bear directly on a household's energy independence. The Government's own figures show 3.8 million homes in Great Britain with uninsulated cavity walls were thought to be easy to treat and a further 1.3 million hard to treat at the end of 2022, and the number of cavity wall insulations delivered under ECO fell from 316,400 in 2014 to 11,100 in 20231.
The acknowledged complexity of the standards landscape matters because protections differ by scheme and by how the work was funded. TrustMark cover, warranty lengths and guarantee arrangements apply to measures under ECO since 2020, GBIS, HUG and LAD, while the Government states there is no compensation scheme for cavity wall insulation problems1. Statutory rights under the Consumer Rights Act 2015 and the Supply of Goods and Services Act 1982 sit alongside any guarantee1.
What happens next
A Westminster Hall debate on the provision of cavity wall insulation under government grants was scheduled for 26 March1. No further detail on the timing of the Government's actions to protect retrofit consumers is given in the sources.
Sources1 cited
- Debate on provision of cavity wall insulation under government grants - House of Commons Library, commonslibrary.parliament.uk
