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's 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 explains what happens if there's a complaint about work: