How To Ensure Radiant Barrier Is Installed Properly


You’ve seen our radiant barrier and heard us talk about what a huge difference it can make in lowering your attic temperature. Did you know that how it’s installed also makes a big difference? Poorly-installed radiant barrier will not get you the results you want.

How We Install Radiant Barrier

Properly installed radiant barrier is stapled to the rafters of your attic. This method leaves a 6-8 inch air barrier, allowing the foil breath, and reducing the chance of any radiant heat being conducted into your attic! Radiant barrier foil LOVES air…let it breathe!

As hot air rises, the foil allows it to travel from your soffit vents, up to the top of your attic where it can be exhausted through your roof vents. Whatever ventilation system you may have: passive, turbine fans, ridge vents, electric fans, or solar vents…radiant barrier can be engineered to allow proper air flow and reduce your attic temperatures dramatically!

On the other hand, anything applied directly to your roof deck will not breathe and will most certainly conduct radiant heat into your attic space. It’s important to consider the different types of product out there, and make sure that you are getting FOIL stapled to your rafters!

Why We Do Not Recommend Installing Radiant Barrier On The Floor

Radiant barrier installed on the floor is mostly a thing of the past…but we still see it occasionally. In the northern states it’s still popular, but remember, radiant barrier is designed to stop heat from entering your attic at the source: THE ROOF!

Moisture can be trapped under radiant barrier installed on the floor, insulation underneath can be damaged, and ultimately it just doesn’t work effectively. Make sure you are installing products to do what they are designed to do: radiant barrier stops heat from entering the attic, and insulation on the floor of your attic will keep your conditioned air in your living space.

What To Do If Your Already Have Radiant Barrier Installed On The Floor

Some of the hottest attics we’ve ever been in are ones that already have radiant barrier on the floor. They called us out saying, “Hey, we got a barrier, but it didn’t work!” And they were right. It didn’t work because it wasn’t installed properly!  By removing foil off of the attic floor, and properly installing it on the roof rafters, we will change your mind about radiant barriers forever!

Would you like to see how a radiant barrier in your attic can lower your energy bills? Give us a call, we’d love to talk to you!

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