Steel Building Insulation
Calculate the wholesale steel building insulation.
Then pay the associated profit amount!
You can use the Fiberglass Insulation Wholesale Calculator to determine your wholesale steel building insulation cost. With Factory Steel Overstock, you know precisely the profit amount you will pay upfront. Please know that you can reduce this amount by attaching a competitor’s quote to explain why the lower quote is lower.
Need to LEARN the Square Footage of your building?
Fiberglass Steel Building Insulation Rolls
Review the different features of Steel Building Insulation Rolls, then fill out an order form, and pay the associated profit to Factory Steel Overstock.
Normal Strength
VR-R + (SALE!)
The VR-R Plus steel building insulation rolls provides exceptional energy efficiency, superior durability, and enhanced thermal performance, offering greater moisture and mold resistance than VR alone. It’s cost-effective steel building insulation rolls with maximum comfort!
WMP-VR-R (plus) has a tensile strength of 35 lbs. per inch. The Mullen Burst PSI is 100
Perm Rating 0.02
The fire rating is Class A-1.
Tri-directional Scrim.
The metalized polyester back allows it to reflect radiant heat away from the structure.
Enhanced Strength
WMP-10
WMP-10 has a tensile strength of 40 lbs. per inch.
The Mullen Burst PSI is 65 lbs.
Perm Rating 0.2
The fire rating is Class A-1.
Choose WMP-10 for standard metal buildings where insulation will be visible but not exposed to abuse.
Also for projects needing a tighter vapor barrier (0.02 perms) than WMP VR-R (plus).
Tri-directional Scrim.
Industrial Strength
WMP-30
The WMP-30 steel building insulation rolls offers superior moisture resistance, improved thermal performance, and greater durability compared to the WMP-10, making it the ideal choice for high-performance steel building insulation rolls in challenging environments.
The WMP-30 has a tensile strength of 40 lbs per inch or more.
The Mullen Burst PSI is 70 lbs.
Perm Rating 0.2
The fire rating is Class A-1.
Tri-directional Scrim.
Premium Strength
WMP-50 ( SALE!)
The WMP-50 steel building insulation rolls provide even greater moisture resistance, superior thermal performance, and enhanced durability compared to the WMP-30, making it the ultimate choice for premium steel building insulation rolls in the most demanding conditions.
WMP-50 has a tensile strength of 65 lbs. per inch.
The Mullen Burst PSI is 120 lbs.
Perm Rating 0.2
The fire rating is Class A-1.
Tri-directional Scrim.
The metalized polyester back allows it to reflect radiant heat away from the structure.
- Factory Steel Overstock for the entire wholesale steel building insulation cost.
- Example: For a $8,500 wholesale purchase, add $795* = $9,295, which is paid to FSO.
- Pay Factory Steel Overstock the profit amount and then pay the remaining balance to the certified supplier.
- Example: For a $8500 wholesale purchase, add $595* = $9,095, of which $9,500 goes to the supplier and $595 is given to FSO.
Option 1: Pay Factory Steel Overstock the full insulation cost.
1. Order Steel Building Insulation Rolls
Calculate your wholesale cost. Call 1-888-512-1116 to order. Receive a comprehensive proposal for signature. Pay Factory Steel Overstock the full insulation cost (wholesale cost and listed profit). Insulation will be ordered that day.
2. Shipping Department Calls
The shipping department will call within two business days to schedule a convenient shipping date. Expedited shipping takes 7–10 days, and standard delivery takes 11–21 days.
3. Sign for Delivery
When material arrives, inventory, inspect, and sign for the steel building insulation rolls.
Option#2: Divide Payment Between FSO and Certified Supplier
(Most Popular & Saves-$200)
1. Order Steel Building Insulation Rolls
After calculating savings, click the “Buy Now” button (below) and complete the short Order Form, or call 1-888-512-1116 for an emailed proposal. You will pay the related brokerage fee to Factory Steel Overstock to initiate an order.
2. Pay the Manufacturer for Steel Building Insulation
You’ll receive a confirmation email within one business day, including your Order Number, supplier contact details, and easy-to-follow instructions to complete your payment.
3. Schedule Steel Building Insulation Roll Delivery
Our shipping team will reach out to schedule a delivery date that works best for you. Expedited shipping usually arrives within 7–10 days, while standard delivery is typically completed within 11–21 days.
4. Sign for Delivered Steel Building Rolls
When your steel building insulation rolls arrive, simply take a moment to inventory the items, then sign to confirm delivery—ensuring everything is in order for a smooth installation process.
Video of Two Payment Processes
Isn’t it time a company was honest about pricing?
Most companies hide their costs and push for the highest profit possible. Factory Steel Overstock does the opposite. It’s transforming the way insulation is sold—by putting transparency and control back in your hands
Here’s how:
- You see the actual wholesale cost of steel building insulation—no inflated numbers, no surprises.
- You get full visibility into the brokerage fee (profit margin)—right up front.
- In seconds, you can calculate your total price and even choose to send the wholesale portion directly to the certified supplier, paying Factory Steel Overstock only the modest brokerage fee.
And if you find a lower verified price elsewhere? They’ll beat it—no questions asked.
With an A+ BBB rating, perfect 5-star customer reviews, and a radically honest approach, Factory Steel Overstock is setting a new industry standard.
No gimmicks. No hidden fees. Just transparency, integrity, and real savings.
Blanket Insulation for Steel Buildings
In the coming days, we will post prices for delivered blanket insulation for steel buildings across the US.
To make it easier, we have compiled and posted a range of blanket insulation prices. Some firms quote a metal building price per square foot; we prefer to post the real price, before added profit, and trust you will appreciate our transparency. It Is Different Here! The Fiberglass Insulation Wholesale Calculator (above) allows you to add desired accessories and price 2.75″ and 9.5″. When you are ready to buy, fill out an order form. Questions, call 1-888-512-1116
| Instead of a Metal Building Cost Per Square Foot, you see real prices | Blanket Insulation for Steel Buildings (R-10) Add $395 to $625 Shipping |
| 1800 | $900* |
| 2400 | $1,200* |
| 3,000 | $1,500* |
| 3,600 | $1,800* |
| 4,200 | $2,100* |
| 4,800 | $2,400* |
| 5,400 | $2,700* |
| 6,000 | $3,000* |
| 6,600 | $3,300* |
| 7,200 | $3,600* |
| 7,800 | $3,900* |
| 8,400 | $4,200* |
| 9,000 | $4,500* |
| 9,600 | $4,800* |
| 10,200 | $5,100* |
| 10,800 | $5,400* |
| 11,400 | $5,700* |
| 12,000 | $6,000* |
| 12,600 | $6,300* |
| 13,200* | $6,600* |
| 13,800* | $6,900* |
| 14,400* | $7,200* |
| 15,000* | $7,500* |
| 15,600* | $7,800* |
| 16,200* | $8,100* |
| 16,800* | $8,400* |
| 17,400* | $8,700* |
| 18,000* | $9,000* |
| 18,600* | $9,300* |
| “The second time I’ve used FSO. Again a great experience. John really seems to care that all turns out right. Would do again it a flash. “ -Stephen Scheiding on 3/7/2024 | |
| Instead of a Metal Building Cost Per Square Foot, you see real prices | Blanket insulation for steel buildings (R-13) Shipping $395 to $625 |
| 1,800 | $1,134* |
| 2,400 | $1,512* |
| 3,000 | $1,890* |
| 3,600 | $2,268* |
| 4,200 | $2,646* |
| 4,800 | $3,024* |
| 5,400 | $3,402* |
| 6,000 | $3,780* |
| 6,600 | $4,158* |
| 7,200 | $4,536* |
| 7,800 | $4,914* |
| 8,400 | $5,292* |
| 9,000 | $5,670* |
| 9,600 | $6,048* |
| 10,200* | $6,426* |
| 10,800* | $6,804* |
| 11,400* | $7,182* |
| 12,000* | $7,560* |
| 12,600* | $7,938* |
| 13,200 | $8,316* |
| 13,800 | $8,694* |
| 14,400 | $9,072* |
| 15,000 | $9,450* |
| 15,600 | $9,828* |
| 16,200 | $10,206* |
| 16,800 | $10,584* |
| 17,400 | $10,962* |
| 18,000 | $11,440* |
| 18,600 | $11,818* |
You must get a shipping cost for these states: AZ, CA, ID, MI, MN, MT, NV, ND, SD, WI, and WY. For questions, call 1-888-512-1116.
| “Thanks John!!! We will come to you with all our insulation needs! Everything went perfectly.” – Stacey of Gabriel Properties 5/22/2024 | |
| Instead of a Metal Building Cost Per Square Foot, you see real prices | Blanket insulation for steel buildings(R-value 19) Shipping $395 to $625 |
| 1,800 | $1,584* |
| 2,400 | $2,112* |
| 3,000 | $2,640* |
| 3,600 | $3,168* |
| 4,200 | $3,696* |
| 4,800 | $4,224* |
| 5,400 | $4,752* |
| 6,000 | $5,280* |
| 6,600 | $5,808* |
| 7,200 | $6,336* |
| 7,800 | $6,864* |
| 8,400 | $7,392* |
| 9,000 | $7,920 |
| 9,600 | $8,448 |
| 10,200 | $8,976 |
| 10,800 | $9,504 |
| 11,400 | $10,032 |
| 12,000 | $10,560* |
| 12,600 | $11,088* |
| 13,200 | $12,038* |
| 13,800 | $12,144* |
| 14,400 | $13,132* |
| 15,000 | $13,200* |
| 15,600 | $13,728* |
| 16,200 | $14,256* |
| 16,800 | $14,784* |
| 17,400 | $15,312* |
| 18,000 | $15,840* |
| 18,600 | $16,368* |
- Price—You buy at the actual wholesale cost + a low brokerage fee!
- Quality- Fiberglass Insulation is NAIMA, NIA, and ASTM-accredited
- Service- Factory Steel Overstock submits and services an order with its A+ Better Business Bureau Grade and 5-Star rating.
You must get a shipping cost for these states: AZ, CA, ID, MI, MN, MT, NV, ND, SD, WI, and WY. All other locations, $395. For questions, call 1-888-512-1116.
| “Easy process. Do your homework, know what you want when you call and you will save $$. I saved hundreds over other prices I got.” Brad Lezzi 1/10/2024 | |
| Instead of a Metal Building Cost Per Square Foot, you see real prices | Blanket insulation for steel buildings (R-Value 25) Shipping $395 to $625 |
| 1,800 | $1,988*s |
| 2,400 | $2,664* |
| 3,000 | $3,330* |
| 3,600 | $3,996* |
| 4,200 | $4,662* |
| 4,800 | $5,328* |
| 5,400 | $5,994* |
| 6,000 | $6,660* |
| 6,600 | $7,326* |
| 7,200 | $7,992* |
| 7,800 | $8,658* |
| 8,400 | $9,324* |
| 9,000 | $9,990* |
| 9,600 | $10,565* |
| 10,200 | $11,332* |
| 10,800 | $11,880* |
| 11,400 | $12,654* |
| 12,000 | $13,320* |
| 12,600 | $13,986* |
| 13,200 | $14,652* |
| 13,800 | $15,318* |
| 14,400 | $15,984* |
| 15,000 | $16,650* |
| 15,600 | $17,316* |
| 16,200 | $17,982* |
| 16,800 | $18,648* |
| 17,400 | $19,314* |
| 18,000 | $19,980* |
| 18,600 | $20,646* |
You must get a custom shipping cost for these states: CA, ID, MN, MT, NV, ND, SD, WI, and WY. All other areas are $395. For questions, call 1-888-512-1116.
Items Included in your Steel Building Blanket Insulation Proposal
Understanding your Steel Building Blanket Insulation Proposal ensures you get the best value. Some companies may offer low prices by excluding key features, but Factory Steel Overstock provides complete pricing transparency.
- Tear-Resistant Facing (example- VR-R +)
- # of rolls
- Width of insulation rolls
- Length of insulation rolls
- Total sq. ft. of insulation
- Thickness of insulation
- R-Value
- Delivered cost
- Brokerage fee
The Fiberglass White Vinyl Faced Steel Building Insulation is the most popular facing. The fiberglass is a blanket of woven log-strand fiberglass that is laminated on one side and has a vapor-barrier facing on the other. These materials are added to fiberglass insulation to work as a vapor retarder and protect the fiberglass. The vinyl-reinforced backing is much stronger and more durable than vinyl by itself.
White Vinyl Faced Steel Building Insulation
- Has Bright Finish Appearance
- Vapor Retarder
- Formaldehyde Fee
- Excellent Acoustic Properties
- Custom Sized Fabric & Insulation
- Hot Melt Technology
- Naima, NIA, and ASTM certified
Not all Fiberglass Steel Building Insulations are the same
- Fabric and Banding: Be cautious when purchasing that there are insulation systems that are of low quality. Some sellers utilize fabric that is thin and cheap, as well as use plastic nylon strapping in place of traditional metal banding compared to vinyl. When installing erectors will be frustrated with this kind of banding twisting up on the screw as they try to attach the strapping.
- Naima 202-96 compliance. This is an independent test performed by Home Innovations. This test is the gold Standard for Flexible Fiberglass Insulation to be Laminated for Use in Metal Buildings. When the facing is laminated to the fiberglass it crushes the fiberglass. The test ensures that after manufacturing the product unrolls to the specified R-value. Some manufacturers do not want to pay for this test and say they do in-house testing. In these cases, the product often arrives from these manufacturers with less than claimed performance. Simply put, it means other insulation outlets, R-19 (6″) insulation may show up at the job site as 4″ or 5″ with a lower R-Value! Our NAIMA 202-96 compliance guarantees you get the R-value you ask for.
- Comcheck- Energy Compliance Certificate COMcheck is a program put out by the department of energy. This program models buildings in a compliance software to verify government energy code performance as it relates to insulation. The certificate will specify a percentage equal to or better than code requirements. COMCheck certificates available on request
- Secure Price: Some firms will indicate that they have the option to increase the price based on how available this insulation can be. This means these firms can process the order and then hit the customer with an increase at the last minute before shipping based on availability. At that point, the customer is stuck and may have to wait many weeks to get their insulation delivered if they don’t accept the price increase from the original quote.
Single Layer Fiberglass Steel Building Insulation R-Values
The R-value is very simple to understand: It measures the amount of heat loss. The thicker the fiberglass steel building insulation, the higher the R-value. Factory Steel Overstock provides pricing for R-Value 10-25 above.
Approximate Thickness of Insulation
2.75″
3″
3.5″
4″
6″
8″
9.5″
Steel building insulation R-Value
R-8
R-10
R-11
R-13
R-19
R-25
R-30
Should I Insulate my steel building with a vapor barrier faced Insulation?
Numerous options are available to insulate your steel building; however, fiberglass is the tried and proven insulation. Your steel building insulation should have a blanket made of woven fiberglass fibers. Ideally, your insulation should have a vapor barrier for moisture protections (vapor retard). Four popular facings are VR-R, WMP-10, WMP-30, and WMP-50. These facings also add tear-resistance.
What R-value of Fiberglass Insulation Should I Choose for My Steel Building?
Lets begin by defining R-value in insulation as the measures its resistance to heat flow, indicating its effectiveness. Higher R-values mean better insulation properties, as the material can more effectively slow down the transfer of heat. This value depends on material type, thickness, and density. Insulation with a higher R-value can significantly enhance a building’s energy efficiency by maintaining a consistent internal temperature, reducing the need for heating and cooling. This not only saves energy and costs but also increases comfort by eliminating drafts and creating a more stable indoor climate. Different climates require different R-values for optimal performance.
Fiberglass Insulation for Sale
With Factory Steel Overstock’s cost-plus program, you can create your own fiberglass insulation for Sale daily. There are no hidden or upfront costs to see a wholesale delivered insulation price of numerous popular fiberglass insulation facings. Start by reviewing posted steel building insulation prices, then fill out an order form and pay the related brokerage fee. It truly is that simple!
After receiving a confirmed price savings, pay the low fee that same day. Fiberglass orders are delivered within weeks.
How to Install Blanket Insulation in an Erected Steel Building
Ideally, one should roll the fiberglass vapor barrier insulation over the purlins and girts during the erection process, then pin it down by installing the sheeting. However, if the steel building already exists, it is not a big deal to do afterward — though it will be a little more challenging because you need to work around the framing and ensure you maintain the vapor barrier integrity. Here’s a step-by-step guide tailored to retrofitting an existing steel structure:
Items needed to when installing blanket insulation in a steel building:
Faced fiberglass insulation
Banding and screws
Vapor Barrier Patch Tape
It is better to have all required materials present instead of acquiring them after you start the installation process.
- Faced fiberglass insulation rolls or batts (usually with a vinyl or foil vapor barrier)
- Insulation support bands and self-taping screws & washers (metal strapping or steel wire or mesh)
- A Vapor barrier tape matching the type of insulation facing utilized
- Utility knife or insulation cutter
- Scaffolding, ladder, or lift if needed
- Protective gear such as gloves, goggles, proper clothing, etc.
A Simple Step-by-Step Installation Process
1. Calculate the square footage of insulation needed to complete the project
- Measure spacing between steel members (usually 4, 5′ or 6′ apart).
- Measure wall height and roof pitch if applicable.
- Order insulation length accordingly or cut rolls at the time of installation.
2. Install Your Banding Across the I-beams to support the insulation from sagging or shifting
- Run metal strapping or steel wire horizontally across the I-beams, starting near the base and spacing it vertically approximately every 18–24 inches.
- For roof insulation, install support bands perpendicular to purlins to hold insulation.
- Secure with self-tapping screws and washers.
3. Ideally, order fiberglass pre-cut sizes to fit the spacings
- Use pre-cut rolls sized to bay widths (or cut to fit).
- Place insulation rolls facing the vapor barrier toward the interior.
- Install insulation into each cavity behind the support banding.
4. Seal the Vapor Barrier
- Overlap the facing of adjacent insulation pieces by 2″–3″.
- Seal all seams with vapor barrier tape to maintain an airtight, moisture-resistant seal.
- Pay extra attention to corners, edges, and around any penetrations (doors, windows, conduits, etc.).
5. Insulate the Ceiling or Roof Panels
- If accessible, apply insulation between purlins, held in place by support bands.
- Faced side should again face the interior.
- Seal all seams along the purlins and at overlaps.
6. Trim Around Obstructions
- Cut and fit insulation around I-beam flanges, braces, doors, windows, outlets, etc.
- Use tape to patch and seal any cut areas in the vapor barrier.
For Best Results:
Add thermal breaks if condensation is a concern (like thermal blocks or foam board between metal sheeting and insulation). Before installing fiberglass insulation, apply double-sided tape to the steel frames. The first step is to thoroughly clean the steel members before applying tape. Once this step is finished, please take the time to cut the tape to the correct length needed. The tape will have a backing that will need to be peeled off on one side so that it can adhere tightly to the frames. Once all desired steel sections have tape applied, could you peel off the remaining backing? This will expose the adhesive. Now, you will meticulously position the fiberglass insulation onto the exposed tape. Before proceeding, make sure it sticks securely to the steel frame.
Start from the top down for walls to reduce sag.
Use faced insulation rolls with integrated tabs for stapling or overlapping.
Avoid compressing fiberglass too much — it lowers the R-value.
Ensure no gaps or unsealed seams, especially near roof-to-wall transitions.
Installation Process (New Construction) for Single Layer Fiberglass Steel Building Insulation
- You simply place the insulation roll over the top of the roof purlins and / or wall girts. This is done prior to the exterior metal panels being installed.
- The fiberglass rolls are essentially sandwiched between the interior metal and the exterior sheeting.
- The vapor barrier (usually white finish) is faced towards the inside of the building, giving the building a clean finished look. We always Re-enforce this facing so that our customers have the sturdiest backing. With a single layer application, you can achieve R-Values up to R-19, but not higher.
- The 3” tabs are to be rolled over and stapled. Orders come with double-sided tape for easy adherence to building, and a small supply of patch tape to assist with minor tears if needed
Read 90 more testimonials
“I have been a part of two orders and am now working on my third order from Factory Steel Overstock. John Barber is always helpful throughout the entire process from start to finish.”
David Muniz
30′ x 50′ x 16′ w/ R-22 Reflective Insulation
“We love our steel building. We erected it ourselves.
Thank you Factory Steel Overstock.”
Gerald Johnston
50’x60’x16′
“I got a good deal on the building, and good service.”
G. Benz
50′ x 75′ x 16′
“We love our building!
L. Hadcock
40′ x 60′ x 14′
“Well, 14 months in the making and a lot of sweat and work but it’s done. FSO was overall great to work with even though there were some hiccups along the way, I continue to refer other friends and people to what I feel is still the best deal on manufactured buildings! Thanks, John for helping the dream come true!”
Mark M.
40′ x 60′ x 14′
“Thank you for everything!”
Lauren F.
40′ x 40′
“Easy process. Do your homework, know what you want when you call and you will save $$. I saved hundreds over other prices I got.”
Brad Lezzi
1/10/2024 (Fiberglass Insulation Order)
“I would recommend this company. They do things the right way.”
Carlos Frank Rodriguez
1/11/2024
3″ Fiberglass Insulation
A Different Steel Building Insulation Selling Process
What if there were a steel building insulation company that transparently disclosed its actual wholesale cost? Then it would let the general public determine the profit instead of relying on commission-based salespeople. Moreover, there would be “NO” additional costs beyond the determined profit amount agreed to, plus applicable taxes. Furthermore, customers may pay the wholesale price directly to the certified manufacturer, with the seller receiving only the profit.
Well, for 15 years, Factory Steel Overstock has been that company!
Its higher-conscious approach—one that empowers consumers with genuine pricing authority while holding them accountable for ethical conduct—was developed by a 40-year industry veteran and practicing Spiritual Practitioner. For many customers, the opportunity to recommend the profit amount on steel building insulation feels refreshing and liberating. Yet others are surprised, even skeptical, that any company could operate with such transparency. Their reaction highlights just how deeply consumer distrust has taken root.
From FSO’s perspective, however, there is nothing extraordinary about this model. It simply reflects how business should have been conducted all along. What’s more surprising is how easily retailers have conditioned consumers to accept inflated steel building insulation pricing and sales tactics—especially in the metal-building and insulation markets—without meaningful scrutiny.
