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7th April 2026

The National Standards Authority of Ireland (NSAI) has published a review, carried out by NSAI’s Sustainability & Environment Department, of existing certification for pumped cavity fill insulation products, as well as an assessment of the potential impacts of cavity wall insulation on DCB homes.

On the 30th of November 2021, the Government agreed to several enhancements to the Defective Concrete Blocks Scheme. NSAI was requested to consider a number of technical matters relevant to its remit as a standards and certification body.

The review and associated investigations are now complete and are documented in the reports published on the webpage linked below. These documents outline the scope, methodology, and outcomes of the work undertaken, along with supplementary technical investigation.

In the interest of transparency and public information, NSAI is making these reports publicly available. The documents should be read in full and in context, and the findings relate solely to the defined scope of the review and the evidence available at the time of assessment.

NSAI Agrément remains committed to sharing its knowledge and insights with relevant stakeholders, thereby supporting current and future studies focused on enhancing our understanding of these materials.

[Disclaimer: All reasonable effort was made to ensure that the information on this page was correct at the time of publication. Any views or opinions expressed on this page are not necessarily those of NSAI. NSAI accepts no responsibility or liability howsoever arising from the contents of this publication or any errors, inaccuracies, or omissions in the contents of the information provided therein.]