Consumers are being advised to use registered installers if they're insulating their homes this winter.
Problems caused by shoddy workmanship or substandard products can be expensive to fix - and may even pose a health risk in some cases.
There is currently no legal requirement for an insulation installer in Ireland to become NSAI certified.
But the National Standards Authority of Ireland only has the power to audit registered installers.
Certification and Inspection Officer Robin Byrne explained what happens if there is a complaint about work: “If there’s a complaint with one of our registered installers, we engage with the installer, the material supplier and the home owner and try to get them to achieve a reasonable solution.
“When you use a NCAI registered installer you get a two year parts and labour guarantee from the installer, you also get between a five and ten year warranty from the material supplier for the products used,
“So there should be enough of cover there, plus you have the contract with the installer himself.”