Insulation For Metal Buildings Must Stop Condensation, Heat, Cold and Air

Prodex Total = Insulation + Radiant Barrier + Vapor Barrier + Air Barrier All in One Product

8 Features of The Best Metal Building Insulation

  1. Stops Condensation
  2. Prevents Heat Transfer
  3. Stops Air Transfer
  4. Deadens Sound of Rain and Hail
  5. Doesn't Support Rodents, Bugs or Birds
  6. Installs Easily
  7. Vapor Barrier
  8. Won't Promote Mold or Mildew

1. Stops Condensation

It can seem like a tropical rain forest inside an unprotected metal shed. It's worse on those days where there is a greater contrast between temperatures at night vs. day. The morning sun hitting the cool metal sheeting will create a drip. When warm air comes in contact with the cool metal sheet, condensation occurs. A temperature difference between the outside and inside of your building creates condensation - Similar to what happens when you have a cold can of beer outside on a hot day.

Protect your valuable contents from damaged caused by moisture.

It can seem like a tropical rain forest inside an unprotected metal shed. It's worse on those days where there is a greater contrast between temperatures at night vs. day. The morning sun hitting the cool metal sheeting will create a drip. When warm air comes in contact with the cool metal sheet, condensation occurs. A temperature difference between the outside and inside of your building creates condensation - Similar to what happens when you have a cold can of beer outside on a hot day.

Protect your valuable contents from damaged caused by moisture.

Using Prodex Total as your metal building or warehouse insulation will eliminate the moisture (condensation) from forming on the metal sheeting. It does it by making the temperature of the metal sheeting on the building approximately the same on the inside as the outside. When the heat or cold from outside comes through the metal skin it hits the outside reflective facing of Prodex and is reflected back upwards through the underside of the metal sheeting. This process keeps the metal sheeting temperature consistent on both sides.

In addition, the inside reflective layer of Prodex metal warehouse insulation keeps the heat (heater) or cold (air-conditioning) inside the warehouse from getting to the metal skin. This also helps in preventing condensation.

2. Prevents Heat Transfer in and out

Heat - Mid-summer sun rays hitting the metal sheeting radiates downward (inside). It makes it unbearably hot and humid inside.

Cold - Winter temperatures turn metal sheeting cold. The cold sheeting creates the effect of an ice box making it colder inside the building than out. This also adds to the condensation problem.

R-value is the measurement of a material's ability to stop heat transfer. If two products have the same R-value, they have the same efficiency in stopping heat transfer.

I thought I had a Higher R-value - Fiberglass Insulation Blankets Lose R-value

Once metal sheeting gets cold it creates a situation where it's colder inside the building that out. To combat this you need an insulation that doesn't lose its thermal protection when you need it most!

The Prodex R-value is not affected by humidity. Metal building insulation blankets (fiberglass), lose R-value once damp (and it will get damp in a metal building). Once fiberglass insulation gets damp, it will stay damp. Not only will you have trapped moisture in the blanket causing rot, rust, oxidation, mold etc., the damp blanket will provide less and less R value as the moisture builds. Couple this with the fact that fiberglass insulation does not prevent radiant heat transfer (primary source of heat flow) and you can see why fiberglass insulation is not the recommended insulation for pole barns.

Ever wonder why it's so hot and wet inside a metal shed in the summer and so cold and wet in winter? The metal skin magnifies the heat of the summer sun and frigid temperatures of the winter. Metal is a very good conductor of heat and cold. In hot weather, metal framing and sheeting rapidly radiate the sun's heat into a building. In cold weather it rapidly releases the heat out of your building. When warm air comes in contact with the cool metal sheet, condensation occurs.

3. Stops Air Transfer 

Air flow carries moisture that impacts the temperature and integrity of the building. Air-flow affects a building's behavior in fire (spread of toxic smoke and gasses). Air barriers also separate garages from conditioned spaces. In this case an air barrier would also serve as a "gas barrier" an obvious safety feature. Prodex Total is an air barrier.

4. Deadens Sound of Rain and Hail

The metal skin on a building can exaggerate the sound of rain and hail. Prodex Total has excellent sound deadening.

5. Doesn't Support Rodents, Bugs and Birds

Unlike fiberglass insulation, Prodex Total does not provide for the nesting of rodents, bugs and birds. Rodents, bugs and birds aren't able to digest the foil.

6. Installs Easily

It's a lot easier and less expensive to install a roll of Prodex than a bulky 6 inch roll of fiberglass. Pinching 6 inches fiberglass between the framing and sheeting is not easy. Prodex Total can be installed before or after your metal sheeting. For fastest and easiest installation, install before applying your sheeting. Installing metal building Insulation

7. Vapor Barrier

Prodex is a class 1 vapor barrier. A vapor barrier (moisture barrier) refers to any material that prevents moisture from passing through the walls or roof of a building. This material can be plastic or better yet, Prodex Total Insulation - closed cell polyethylene foam and reflective reinforced foil facing. Prodex Total Insulation (Vapor Barrier, Class 1. perm<0.1 ).

No Leak - Prodex Total Plus seals around nails and screws.

8. Won't Promote Mold Or Mildew

Resistance to Growth of FUNGI

Aspergillus niger

Aspergillus avus

Aspergillus versicolor

Penicillium funiculosum

Chaetomium globosum

Metal Building Insulation For Sale - Prodex Total

10M Plus: R22

Thickness: 10mm (0.4") closed cell polyethylene foam covered on both sides with reinforced reflective foil. Twice as thick. Increased R. More strength. Better install.

5M Plus: R17

Select one of these 5M items: 48 inch, Fast Action, 72 inch, 24 inch or 16 inch. Thickness: 5mm (0.2") closed cell polyethylene foam covered on both sides with reinforced reflective foil. 

WHITE 5M Plus: R15.3

Thickness: 5mm (0.2") closed cell polyethylene foam with reflective reinforced foil on one side and plastic white finish film on the other side. Ideal where white finish is preferred.

Calculate amount of insulation required for your building


Fiberglass, Spray Foam and Bubble vs PRODEX In Steel Buildings

Fiberglass Loses R-value And Cracks In Metal Buildings

Once fiberglass insulation gets wet (and it will get wet, due to condensation) it will lose R-value! Water trapped between fiberglass insulation and the exterior of a building will also cause mold, fungus growth, rust and oxidation - Conditions that will degrade the metal and shorten the service of the structure. In addition, fiberglass insulation does not prevent radiant heat transfer (the primary source of heat-flow in and outside your building).

Take a look at the white vinyl facing the next time you're in a metal building - It will be either sagging, or sagging and flaking. This is due to the added weight of water. Behind the white vinyl is a wet, mold filled blanket that will eventually cause the white vinyl to crack and fall off. At some point, when you're exposed to the toxic fibers, you'll be forced to remove the insulation - Hopefully before it does too much damage to the metal framing. Avoid an insulation that collects moisture, attracts mold, cracks and needs to be replaced. If you insist on using fiberglass, use it in conjunction with Prodex Total, so the Prodex can keep the moisture out of the fiberglass.

The Prodex Total R-value is not affected by humidity. This feature cannot be over emphasized. There will always be some humidity in a metal building and your insulation must work in these conditions.

We repeat! If fiberglass is used as metal building or pole barn insulation rather than Prodex Total, you'll have moisture issues (typically hidden behind facing), Loss of R-value (consequence of the moisture) and heat gain.

Disadvantages of Spray Foam Insulation In Metal Buildings

  1. High spray foam insulation cost
  2. It doesn't prevent radiant heat transfer (the primary source of heat transfer into and out of a building - especially metal buildings and pole barns.
  3. Do it yourself spray foam insulation can't be done by yourself to retrofit an existing building structure because of the chemicals and processes involved.
  4. Nearly impossible to use in conjunction with another insulation type.
  5. R-value will diminish slightly with age.
  6. With the exception of cementite foams, spray foam insulation can release toxic fumes when it burns.
  7. According to the U.S Environmental Protection Agency, there is insufficient data to accurately assess the potential for exposures to the toxic and environmentally harmful isocyanides which constitute 50% of the material.
  8. Depending on usage, building codes and environment, most foams require protection with a thermal barrier such as drywall on the interior of the house.
  9. Can shrink slightly while curing if not applied on a substrate heated to manufacture's recommended temperature.
  10. Although CFC's are no longer used, many use HCFCs or HFCs as blowing agents. Both are potent greenhouse gases, and HCFCs have some ozone depletion potential.
  11. Most, such as Polyurethane and Isocyanine insulation, contain hazardous chemicals such as benzene and toluene. These are a potential hazard and environmental concern during ray material production, transport, manufacture and installation.
  12. Many spray foam insulations are made from petrochemicals and may be a concern for those seeking to reduce the use of fossil fuels and oil.
  13. Most spray foams require protection from sunlight and solvents.

MJbirdie: Wednesday, March 02, 2020

Dear Insulation4Less,
The spay foam was flaking from the building I just bought. It was a mess. It took me two days to scrap the balance of it off. Your 10M went up quick. I used some big head screws and some metal strips to attach it to my framing. I could tell the difference instantly. Good stuff

John S. Wednesday, Feb 13, 2019

Dear Insulation4Less,
I was considering using spray foam for a retrofit of my 50 x 100 warehouse roof. My primary concern was condensation and heat. I'm glad I went your direction. In addition to saving money, I think I got a better product for my money given my needs. No issues of yet. I'll stay in touch.

Bubble Insulation In A Metal Building

Foil Only
Single Bubble
Double Bubble
Prodex Total 5M

Take a look at the photos above. Even if you didn't know anything about double bubble insulation or Prodex Total, which would you choose? The obvious choice is Prodex Total. It has a high quality core that keeps its shape when exposed to forces. Prodex Total 5M plus has a nominal thickness of 5mm (0.2"). Prodex Total 10M is 10mm (0.4"). Both are closed cell polyethylene foam covered on both sides with reflective reinforced foil facing.

Under pressure, the Prodex micro-cells do not collapse -- With a pressure of 6 PSI Prodex compresses just 6%. When the load is relieved it takes back its initial shape. The density of the foam is between 1.25 lb/ft (sq) - 1.87/ft (sq). This gives the material real body.

Because Bubble insulation has a core composed of air rather than closed cell polyethylene foam, it lacks the long-term consistence in performance of Prodex Total. More on Bubble Insulation

Buying Metal Building Insulation With Confidence

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Over a million order totaling more than 4 billion square feet of insulation sold.

Dear Insulation4Less,
My name is David. I am the Warehouse Manager for Schlossadler Wines, Inc. We are an international boutique wine distributor with a 9,300 sq. ft. warehouse in Oceanside, CA. Approximately one month ago the owner of the company (my boss) came to me with the task of researching, ordering, and installing insulation for the ceiling of the entire building by myself. With limited experience in this particular area under my belt, I accepted the project anyway. I honestly didn't even know where to start. I sent detailed photos along with our information and questions to your sales team. They replied promptly with very easy instructions and recommendations as to "what type" and "how much" product should be ordered to complete our mission. Now, one month and about 200 hours later, my boss is extremely happy, our stock is cool, and I've received a very generous bonus!!
Thanks Insulation4Less, I will definitely spread around the words: "foil-foam-foil!"

Prodex Total:

  • R-unaffected by humidity
  • Prevents radiant heat transfer
  • Vapor barrier
  • Prevents condensation
  • Does not promote mold or mildew
  • Does not provide for nesting of rodents, bugs or birds
  • Seals around nails (no leak)
  • Made with 100% recyclable virgin raw materials.

INSULATION + Radiant Barrier + Vapor
Barrier + Air Barrier


One solution to Cold, Heat and Condensation - You'll be warm in winter, cool in summer and dry all the time.

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