Solid Wall Insulation: Unlocking demand and driving up standards
In November 2015, the chief construction adviser to the government Peter Hansford published his recommendations for restoring the credibility of solid wall insulation (SWI).
Hansford had been commissioned by the Green Construction Board to consider ways in which demand for solid wall insulation could be unlocked through improving its affordability and increasing its attractiveness as a solution. He claimed that numerous examples of inadequate installation and poor workmanship have led to SWI developing something of a poor reputation.
His recommendations for restoring the credibility of SWI include:
- More robust accreditation of assessors and qualified installers.
- Development of guidance for assessors, designers, supervisors and customers.
- Establishment of a retrofit co-ordinator.
- An awareness campaign to increase uptake.
- Creation of a ‘Retrofit Hub’ as a technical centre of excellence.
- Government policy to offer greater consistency in incentives that are offered.
Hansford’s report claims that 3.5 million homes could benefit from SWI treatment.
Green Construction Board chairman Mike Putnam said: “Given that there are around 26 million existing homes in the United Kingdom and over eight million of these with solid walls, adopting solid wall insulation as a solution for much of our existing housing stock makes good business sense. I urge industry and government to study the recommendations made by Peter Hansford and to grasp the huge business opportunities inherent in them.”
The industry has responded favourably to the recommendations.
Kingspan Insulation Ltd. released a statement saying: “We very much agree with the comments within the report that promote careful specification and appropriate installation, both of which are essential when looking to improve the 8 million dwellings across the country that could potentially be improved. As an industry, we need to work together to produce better guidance for Solid Wall installations.”
The Insulated Render and Cladding Association (INCA) Chairman Pádraig Barry said: “Given the current uncertainty in the industry, the publication of this report brings a very timely and much needed focus on the SWI market. As the leading trade association for external wall insulation, INCA welcomes the publication of this report and will work with Government and industry partners to drive forward its recommendations.”
Hansford’s tenure as chief construction advisor is set to end in November 2015 with the role being discontinued.
You can read the recommendation document ‘Solid Wall Insulation: Unlocking demand and driving up standards’ here.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
- BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.
- Cavity wall insulation.
- Cold bridge.
- Condensation.
- Designing out unintended consequences when applying solid wall insulation FB 79.
- Floor insulation.
- Green deal.
- Insulation specification.
- Insulation.
- Roof insulation.
- Wall insulation and moisture risk.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Accommodating the Victorian and Edwardian working woman. Book review.
Rethinking passive fire protection in design
PFP demands the same level of design rigour as structure or services.
38% of Gen Zs feel safe when a fire door is wedged open.
Stunning images from around the world
Shortlist for CIOB’s Art of Building photography competition.
Guidance for conversion of traditional pre-1919 stone buildings.
Industrial heritage in the Ruhr
A marked difference to the fate of industrial landscapes in the UK.
Communities will be able to build their own clean energy.
Why diversity and inclusion matters for SMEs
CIOB’s D&I Charter shows how practical changes can support long-term growth.
Cut electricity bills to power growth
Coalition sends joint letter to the Chancellor.
Gasholders: a history in pictures. Book review.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.

















