Superior Buildings and Carports, Inc.

We now offer insulation solutions for your building. Call 1-866-943-2264 for more information.


Blanket Thickness / R-Values
The higher the blanket thickness, the higher the R-Value. R-Value is a measurement of the effectiveness to retard the loss of heat flow.
Single Layer
2" Not Rated
3" R-10
4" R-13
6" R-19
8" R-25
9" R-30
Double Layer
6“ and 3” R-29
6“ and 3.5” R-30
6“ and 4” R-32
6“ and 6” R-38
(generally top layer is unfaced)


Facing materials are applied to fiber glass blankets to serve as a vapor retarder as well as a protected cover over the fiberglass.


Facing materials are applied to fiberglass blankets to serve as a vapor retarder or barrier as well as a protected cover over the fiberglass. Facing material offers a clean finished look in any metal building environment.

Black Facing
Polypropylene faced on front side, natural kraft paper backing on back side. Lowest priced. Generally used in a typical metal building application that does not require heavy facing. Industry standard.
Polypropylene faced on front side, metallized polyester backing on back side. Provides a higher permeability than WMP-VR. Generally used in a typical metal building that does not require heavy facing. Most Common.
Polypropylene faced on front side, white kraft paper backing on back side. Slightly heavier than WMP-VR. Generally used in a typical metal building application when walls are exposed to
light to moderate traffic.
Polypropylene faced on front side, metallized polyester backing on back side. Twice as heavy and strong as WMP-VR-R. Generally used in a typical metal building when walls are exposed to heavy traffic.
Polypropylene faced on front side, polyester fabric backing on back side. Woven product. Generally used in sporting facilities and high traffic areas where walls are exposed to heavy traffic and abuse.
Black matte Polypropylene faced on front side, kraft paper or metallized polyester backing on back side. Generally used when designer doesn’t want to draw attention to roof or ceiling. Lower cost than painting.
Facing Specification Chart
*Cost are based on price per sq ft
Definitions for Chart:
a measure of the force required for a blunt object to rupture the facing (reported in lbs/sq inch)
a measure of the energy required for a sharp object to puncture the facing (in beach units)
a measure of resistance to breaking while being pulled (measured in lbs/inch of width)
a measure of water vapor movement; also called Permanence or Water Vapor Transmission Rate
a measure of noise absorption; called Noise Reduction Coefficient; Facings with 3” or 6” Insulation
white, metallized polypropylene
vapor retarder




Tabs are the extension of the vinyl facing past the fiberglass blanket, used to seal or create a finished edge for the seams. You can get 1-6” tab on one side of the fiberglass, or 2-3” tabs. Double faced tape can be added to seal the tab to next piece of insulation. In retrofit this is usually 3” on each side and 6" on one side in new construction. In retrofit, It is either tucked up along the side of the fiberglass acting as a trim or used to cover the the purlin or girt. An option is to get a factory pre-applied adhesive on the tab, which the installer peels and sticks to the next blanket. This provides a clean seal to the seams and creates a vapor barrier.





A common way to secure retrofit insulation to the walls is using stick pins. Insulation stick pins are glued to the wall panel 16” apart. The pins then penetrate the fiberglass and facing and a washer is placed over the insulation to secure it. The pointed tips are then cut off with a wire cutter. This application creates a quilted look.
(Pins should be covered in high traffic areas to prevent injury)


In metal buildings banding can be used to secure insulation in a roof or walls (most commonly used in the roof.) Steel bands 1” wide are screwed to the underside of the metal purlin 30” apart creating a grid system.

Stick Pins
Stick Pins & Banding




What are some benefits of insulating a metal building?
If your building is heated or cooled, the primary benefits are energy savings and user comfort. Other benefits include noise reduction, enhanced light reflectivity, and condensation control.

How much insulation should I use?
In a heated or cooled building installing the highest R-value (thickness) packages available is usually the best way to go. While the pay back through energy savings may have been 7 to 10 years in the past, the high cost of energy in today’s world means the pay back period could be cut by as much as 2/3. The most common thickness is 4 inch in the walls and roof. 6 inch insulation is very common but the buyer needs to be aware that if the insulation is not thinned out over purlins or girts a “pillow effect” may occur causing panel distortion or bulging. If you desire a higher R-value or need to meet a certain commercial code, you have the option to go to a banded system which places the insulation in between the purlins and not as much between the panel and purlin.

What does insulation do?
Metal building insulation acts as a barrier to slow down the movement of heated or cooled air, reduces energy consumption, helps prevent condensation, absorbs sound, and increases lighting efficiency.

What is R-value?
R-Value is a measurement of the effectiveness of an insulator to retain or retard the loss of heat flow. The R-value is directly related to the fiber glass thickness. The thicker the fiber glass blanket the higher the R- value. All R-values listed are determined with the insulation uninstalled. Compression of the purlin install method will reduce the R-values listed.
Note: Improper installation of any insulation can significantly lower the insulations effectiveness.

What is U-value?
The U-value (overall heat transfer coefficient) is a term used to describe the thermal performance of a building envelope assembly such as a roof or sidewall system in a metal building that has a number of heat flow paths. NOTE: THE LOWER THE U-VALUE THE BETTER THE PERFORMANCE.

Who is NAIMA?
NAIMA or North American Insulation Manufacturers Association is a trade association of manufacturers of fiber glass, rock wool, and slag wool insulation products. Today NAIMA has expanded its role and concentrates its efforts on promoting energy efficiency and environmental preservation through the use of fiber glass and other insulation products.

Are there guidelines or instructions for installing insulation?
Yes. Click here to view the NAIMA publication “Recommendations for Installing Fiber Glass Insulation in Metal Buildings” You need Adobe Acrobat Reader to view this document. If you do not have a copy, you can download it for free here

What are NAIMA 202-96 Certified Metal Building Insulations?
NAIMA 202-96 Certified Metal Building Insulations are fiber glass insulations intended to be laminated and manufactured for the metal building market. This standard is supported by NAIMA to assure that these insulations are distinguished from insulations produced for other uses. If non-certified insulations are used, they may not deliver the same thermal performance, tensile strength, and greater thickness recovery after compression as those insulations that are certified.

If my insulation is exposed to moisture does it affect its performance?
Moisture from rain or humidity can degrade the thermal performance of the insulation and service life of the building. It is important that a vapor barrier, such as a facing, is installed without gaps and sealed to help protect the fiber glass blankets. If moisture exists it is equally as important to provide a well ventilated environment. Wet insulation should be replaced if it is damaged.

What do you know about reflective insulations?
NAIMA has tested this type of insulation and has found them to be a concern for fire safety both in the foil/bubble pack and the foil/foam core type. The published R- Values are much higher than NAIMA’S test could achieve. Note: Test configurations performed in “lab” conditions are not typical of the real world of metal building application.

What concerns should I have about the installation process?
First and foremost is safety. Fall protection is a requirement from OSHA especially when installing roof insulation or roofing. Be sure that you read all warnings and abide by the OSHA regulations for your safety as well as others working with you.

What is ASHRAE 90.1 compliance for metal buildings?
It is a commercial code requirement and has been adopted in most areas. Check with the authority having jurisdiction in your area to verify whether this code is applicable and if consideration should be made to meet its requirements.

How should the insulation be stored once it arrives at the job site?
Insulation should be stored in a dry protected area especially if it is not to be installed immediately. All poly bags should be elevated as to not become in contact with surface water. Poly bags should have punctures in each end to help allow for circulation.

What should I check for when unloading at the time of delivery?
The insulation should be inspected upon arrival to insure that your order is exactly what was ordered. Take care as to not inadvertently puncture the poly bags while unloading. Seal any tears that may have occurred during the shipping process. If there is anything wrong with the order or insulation then it should not be installed. Contact us immediately! Your insulation comes with a limited warranty. Items not subject to claim under our warranty include reimbursements for consequential damages, labor or rental equipment costs or losses resulting out of a warranty claim.

How is my insulation packaged?
Your insulation is pre-cut for the walls and roof and placed in heavy poly bags for added protection. The bags are labeled “ROOF” or “SIDE WALL” or “END WALL”. When we say pre-cut we do not mean that there is no field work. For example there may be angles to cut for the end wall. Also, there may be several runs from the base to the eave in one roll. The length of the roll is usually a multiple of the eave height (plus one foot extra to be trimmed).

Does insulation absorb water?
Yes. Insulation actually acts like a wick when exposed to water. INSULATION SHOULD NOT BE USED AS A CLOSURE UNDER PANEL ENDS. It is especially important to cut your insulation fiber glass back (you can leave the facing to fold back over the end of the insulation blanket) at the ends of panels such as the eaves and base. This is a common mistake among new installers which results in a wicking of water into the building. Be sure that you read all installation instructions.

Does your company supply NAIMA certified insulation?
NIAMA certified insulation is a common product supplied from our laminating facilities. We do however work with some of the largest fiberglass blanket suppliers that are not members of NIAMA. This means that the testing results which are available were performed by independent testing facilities other than NIAMA. If NIAMA is a required specification make sure you indicate that in the quote and order documents







By using this website customer should also read and understand our terms and conditions on our LEGAL PAGE.