A Personal Message from John

Hi — I’m John Barber, founder of Insulation Overstock. Let me tell you what this company is, and why it exists, in about three minutes.

Insulation Overstock opened in September 2024 as a division of Factory Steel Overstock. Factory Steel Overstock has been my main company since 2011. We’re an A+ BBB accredited business, and we’ve built our reputation on one idea: the buyer should see the actual factory cost before they commit to buying anything.

We spent years watching our steel-building customers order their insulation separately, from other suppliers, and pay retail markups of 30 to 50 percent on the same material we could source at wholesale. It bothered me. So in 2024, I set up a dedicated division to fix that gap. Same wholesale-direct philosophy — but built around a single product category. Fiberglass insulation for metal buildings, pole barns, and commercial structures.

How the Program Works

When you use the calculator on this site, you see three numbers. The first is the manufacturer’s wholesale rate per square foot — the exact price a NAIMA-certified mill charges when it ships a pallet to a national distributor. The second is the LTL freight cost to your state. The third is the acceptable service-fee range for your order size.

That third number is where we’re structurally different from every other insulation supplier online. We don’t post a fixed markup. We post a range. Small orders under a thousand dollars sit at 20 to 30 percent. Large commercial orders above thirty thousand dollars sit at 3 to 5 percent. You choose where inside that band your offer lands. Fair offers inside the range are accepted the same day — no callback, no negotiation theater, no waiting for approval.

Where the Money Actually Goes

Here’s the part that trips people up when they first hear it. You pay Insulation Overstock only the service fee — the one you offered. That’s the entire payment relationship with us. It covers our sourcing, freight coordination, and after-sale support.

The wholesale material cost and the freight? Those go directly to the certified fiberglass laminator. The mill invoices you, you pay the mill, and the pallet ships. We never touch the material money. We can’t inflate it, we can’t discount it. It’s the actual factory rate — because we’re structurally out of that transaction.

What Makes This Unique

What makes this unique isn’t a slogan — it’s the accounting reality. Most insulation resellers hide the mill rate and quote you a bundled unit price with their margin baked in. Here, the mill rate is published, the service fee is the only thing you pay us, and the transparency is a structural fact — not a marketing claim.

You also get the operational backbone of a fifteen-year-old company behind you. Factory Steel Overstock’s freight relationships, supplier vetting, and customer support all apply to your insulation order.

How to Reach Me

You have two ways to reach me directly. Text 303-594-8373 — that’s my personal number. I usually reply within minutes. Or call our toll-free line at 1-800-593-4012. Either way, you’re getting a real answer — not a chatbot loop.

Thanks for listening. If the calculator numbers look fair, use the order form, offer what you’re comfortable paying, and let us know when you’re ready to move.

— John Barber, Founder
Insulation Overstock

Ready to see the numbers for your project?