Radiant barrier foil?

[Sasquatch912]

I'm debating about getting some radiant barrier foil like this below and install it on back of the OSB wall i am going to put in my metal shop. Will this be good or should i put the barrier away from the osb?

 

[duneslider]

What are you trying to accomplish? This won't work as well as real insulation. It provides a small amount of benefit but not a lot.

 

[billconner]

It can help a little with cooling. I believe it needs to be spaced away from the exterior sheathing, like across interior face of studs or under roof rafters. That may be your plan - wasn't sure.

I suspect normal insulation would do more but not sure.

 

[bigdav160]

If the sun hits the wall and the radiant barrier has an air space it will reduce the heat load tremendously.

As mentioned, it's not insulation but serves a different purpose.

 

[billconner]

Here's what the US Dept of Energy says, and I don't find much contradicting it.

"Some studies show that radiant barriers can reduce cooling costs 5% to 10% when used in a warm, sunny climate. The reduced heat gain may even allow for a smaller air conditioning system. In cool climates, however, it's usually more cost-effective to install more thermal insulation than to add a radiant barrier."

 

[txvwnut]

I put something similar to that in the attic of the house, I didn't notice anything different as far as temps or energy usage but your mileage may vary.

 

[karoc]

Several Youtubes on this subject but it’s all the guys trying to sell it
I know some people who install that foil both sides double bubble but don’t know if it was any better

 

[lolaetype]

I put radiant barrier in our attic when we lived in the Houston area. I checked the attic temperature for several sunny days before and after the installation. Attic temps dropped by 15-20 degrees F.

 

[QtheGenius]

I've seen where people staple it between the studs with a 1-2" gap from the outside wall, then put pink panther fiberglass insulation behind it so it backs up against the drywall. Personally, I used the foil bubble version of this barrier in my garage. It's separate from my house, so I just used it between the outside stucco and the drywall. With an exhaust fan on a temp controller near the ceiling, I can be inside with the doors closed on a summer day and not sweat.

 

[FL Guy]

I'm debating about getting some radiant barrier foil like this below and install it on back of the OSB wall i am going to put in my metal shop. Will this be good or should i put the barrier away from the osb?

I just took down my radiant barrier and I’m doing spray foam.

Id sell you this if you want. I have approximately 400 feet X 4’ wide roofing foil radiant barrier available.
It is foil on one side and white fabric on the other.
I would say 90% is in approximately 35 foot lengths with the rest being anywhere from 20 to 25 foot lengths and a couple of odd and end lengths after that.

I’m in Central Fl. Let Me know.