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Metal building insulation -Prodex

TADER

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Apr 12, 2024
Messages
17
Has anyone had any experience with Prodex insulation? Im looking to insulate a metal building in North East Georgia. This insulation almost seems to be to good to be true. They are claiming r22 with 10mm and r17 with 5mm. The product is also fairly cheap.
 
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Jakemedic

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Jul 26, 2013
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Cornfields of SE Iowa
Funny you said “too good to be true”. That was my take on them when I looked into them 4 yrs ago for my shop. I ended up using 8’ wide rolls which minimized the thermal break. Best thing I did with the shop build. Cheap? Not overly, efficient? Without a doubt.


I don’t get a penny for recommending these folks, but I sure would look at them. Spray foam was fast, effective and expensive. My route was slow, methodical and efficient (R19) and it cut well with my wife’s electric bread knife (which we still use in the kitchen).
 

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welder57

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Feb 26, 2011
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414
Spray on foam-some types will eat up panels (hold moisture) from the inside. Do your research on any spray on foams-get a warranty from the vendor that if the foam rust out the panels, they will replace them.
 
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TADER

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Apr 12, 2024
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There are definitely some dangers when using spray foam and I've seen several of them. Moisture and rot being the most obvious....
I'm not planning on heating or cooling the building, just wanting to cut down on the sun/heat of our summers. I found a few threads on this product from years ago, but nothing more recent. I don't necessarily need the r value that is being claimed. Mainly want to reduce the heat from the afternoon sun.
 

cannuck

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Nov 30, 2021
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Rural SK
Has anyone had any experience with Prodex insulation? Im looking to insulate a metal building in North East Georgia. This insulation almost seems to be to good to be true. They are claiming r22 with 10mm and r17 with 5mm. The product is also fairly cheap.
Went to their website to see how they could make such a ridiculous claim. To start with: the whole "R" value thing is a creation of the insulation industry and not exactly accurate. Prodex seems to have worked some calculation of the reflective value of a shiny surface and transferred that calc into the "R" value equivalent. While it is true a reflective surface does indeed reflect IR it is completely ridiculous to extrapolate thermal conductivity values.
 

FL Guy

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Dec 21, 2022
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Went to their website to see how they could make such a ridiculous claim. To start with: the whole "R" value thing is a creation of the insulation industry and not exactly accurate. Prodex seems to have worked some calculation of the reflective value of a shiny surface and transferred that calc into the "R" value equivalent. While it is true a reflective surface does indeed reflect IR it is completely ridiculous to extrapolate thermal conductivity values.

This ☝️☝️☝️
 

Smoker

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Sep 4, 2009
Messages
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Location
San Antonio
Spray on foam-some types will eat up panels (hold moisture) from the inside. Do your research on any spray on foams-get a warranty from the vendor that if the foam rust out the panels, they will replace them.
I asked Mueller if spray foam affects the warranty, they said it does not.
 
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racecougar

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Jan 26, 2021
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Missouri
Yes sir. Did that search. Looking for more recent experiences and more time tested responses. Hoping that a new thread would drum up some more current information regarding the products installation, effectiveness, and durability over time.
As you said above, the spec'd R-rating is too good to be true (because it's a lie). If you need more folks to tell you that, look through the threads in the search link above.
 

WildBill

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Aug 20, 2021
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Location
PNW
I used the blue tex radiant barrier, it seems like a better product from a better company that doesn't tell lies about insulation value. It does make a big difference in radiant heat, I tested it some while building my shop and measure a 35F difference between the inner surface of a wall with it and one without it. Since I wrapped my building frame up tight with it before installing the furring strips and metal it sealed out drafts and I have a 1" air space between the metal and the radiant barrier/framing, which probably does something from an insulation standpoint. Besides sealing out drafts I doubt it does very much in cold weather. It also comes with nice tape on the edges to seal between sheets, you just peel off the tape flap covering after install and smooth it out.
 

AirDave

New member
Joined
May 26, 2024
Messages
2
You said it… to good to be true..
Get it spray foamed
I was just talking with a metal building manufacturer and he said to NOT use spray foam on a metal building because it will capture moisture! So, I, for one, would like to hear more about this from someone who actually HAS spray foamed their metal building and what has the outcome been after a few years?
 

Mike65

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Mar 7, 2007
Messages
3,028
Location
Horse Pasture, Va.
We had our garage/shop spray foamed after the electrical was done when the building was only a couple months old & 4 years later it looks as good as new.
 
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