Proper insulation transforms a metal building from a hot, noisy box into a comfortable, usable workspace.

Pro Tip #24: Fiberglass Needs a Vapor Barrier

Fiberglass batts absorb moisture if not protected. Always install a 6-mil poly vapor barrier on the warm side (interior in winter climates). Without it, moisture migrates into the insulation, reduces its R-value, and can cause mold on the steel framing.

Why This Matters

Every metal building project has details that separate a smooth experience from a frustrating one. This tip comes directly from real-world experience working with customers across Tennessee, Arkansas, Mississippi, and Kentucky. The issues that cause the most problems are almost always the ones that could have been avoided with a little advance planning.

Putting It Into Practice

Before your next step in the building process, take a moment to apply this tip to your specific situation. Every property is different, every project has its own challenges — but the fundamentals hold true across the board.

If you have questions about how this applies to your project, reach out. Sean Duncan at Rescue Metal Designs has seen virtually every situation that comes up in the Mid-South market, and a quick conversation can save you significant time and money.

Good insulation pays for itself in comfort and energy savings. Plan for it from the start.

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