If you’ve found this blog you have likely heard of IC ratings- a safety measure relating to light fittings. They're most commonly associated with recessed downlights, but can apply to other light fittings that go into areas of insulation, for example wall cavities or ceilings.

In this blog we’ll cover what IC ratings are, how to know if you might need IC rated downlights and our top picks too to get you started. As ever, if we don't answer any of your questions in full, please get in touch, we're happy to help.

What does IC rated mean?

IC stands for “Insulation Contact” and determines whether a light can safely come into contact with insulation, such as loft insulation, without overheating.

As an example, recessed downlights give you that lovely seamless layout in your ceiling by having the majority of the fixture hidden away above the ceiling. Sometimes, this section may be covered by insulation.

In Australia, the standard to look for is IC-4. You may also see IC-F or simply IC on specifications, which generally means the light can be abutted to insulation but not fully covered. Only IC-4 rated lights are tested and certified to be completely covered by all types of insulation without requiring ventilation gaps.

Top tip: When looking for an IC-rated fitting it's critical that you check the light and also the driver. Usually the driver is not IC rated and it's therefore important that it remains separate from insulation. If you're unsure, check with your electrician or get in touch and we'll be able to help.

When should I look for an IC rating?

IC ratings aren’t applicable to all lights but we do recommend a thorough check around where you will be putting any fitting, particularly if the fitting goes through the surface.

If you are considering recessed lights, such as downlights, IC ratings are very important to consider.

How do I know if my light will come into contact with insulation?

The best way to know is to ask your electrician/ installer. They will be able to advise whether you need an IC rated downlight or not.

What happens if I use a non IC rated light?

If you use a non IC rated light and it is not installed correctly i.e. it comes into contact with insulation, it is a fire hazard. This is due to the potential that the light will overheat.

What if I have non-IC rated lights installed?

In this case, you will need to ensure space around the light, both on the sides and above it. No insulation should come into close proximity with the light. Your electrician will be able to advise of the right gap to leave.

Are IC rated lights better?

Used correctly, a non-IC rated light will work as well as an IC rated light. They are often cheaper, which is why not all downlights are IC rated.

However, it is often easier to install IC rated lights as you can lay the insulation over and around the lights without needing to have prescribed spaces for the lights. The installation process is therefore (typically) quicker and cheaper. The other benefit is that, with the insulation covering the lights, your insulation will be more effective, hopefully saving on those energy bills!

IC rated lights provide additional peace of mind to many customers - there is no negative impact of using an IC rated light even if there is no insulation contact.