The Blown-In Blanket System (BIBS): The Smart Solution for Superior Insulation
When it comes to insulating your home or commercial building, you want a solution that’s effective, long-lasting, and able to reach every nook and cranny. That’s exactly why more contractors and homeowners are choosing the Blown-In Blanket System (BIBS) for their insulation needs.
If you’ve never heard of BIBS before, or you’re considering it for your new construction or remodel, here’s a closer look at what makes it such a standout choice.
What is the Blown-In Blanket System (BIBS)?
The Blown-In Blanket System (BIBS) is an advanced insulation method that uses specially designed netting to hold loose fiberglass insulation in place within wall cavities, floors, or cathedral ceilings. Instead of using traditional fiberglass batts or rigid boards, BIBS fills the entire cavity with loose-fill fiberglass, blown under pressure, so it completely surrounds pipes, wires, and other obstructions.
This creates a dense, seamless thermal barrier that delivers exceptional energy efficiency and comfort.
How Does BIBS Work?
1️⃣ Netting is installed over open wall studs or joists.
This creates a secure “blanket” that contains the insulation material.
2️⃣ Loose fiberglass is blown into the cavity under pressure.
This fills every inch of space, tightly packing around electrical, plumbing, and other obstructions that batts often miss.
3️⃣ The result is a high R-value, custom-fit insulation job.
No gaps, no settling voids, and superior thermal performance.
The Benefits of BIBS
✅ Outstanding Coverage
Unlike batt insulation, which must be cut to fit around wiring and pipes (often leaving gaps or compression), BIBS flows around all obstacles, ensuring complete coverage. This means fewer thermal breaks and far better overall performance.
✅ Higher & Consistent R-Values
Because BIBS is densely packed, it achieves higher R-values per inch than many standard batt installations. It also maintains its installed density, so it won’t slump or create cold spots over time.
✅ Excellent Airflow Resistance
While BIBS is not an air barrier by itself, the dense fill greatly reduces air movement within walls, improving energy efficiency and indoor comfort.
✅ Superior Sound Control
The dense fill of the blown-in blanket system also helps dampen noise, making it a smart choice for interior walls or multifamily construction.
✅ Non-Settling & Moisture Resistant
Properly installed BIBS does not settle, maintaining its performance year after year. Fiberglass is also naturally resistant to moisture, mold, and pests.
✅ Ideal for New Construction & Retrofits
BIBS works beautifully in new builds, and with careful preparation, it can also be installed in retrofit applications where walls are opened up.
Why Choose the Blown-In Blanket System Over Traditional Batts?
Traditional batts, while common, can’t always perfectly fill the irregular cavities created by plumbing, wiring, or unique framing. Even careful installation often leaves tiny gaps that become energy leaks.
By contrast, the Blown-In Blanket System fills every cavity corner-to-corner, top-to-bottom. It’s like wrapping your entire home in a snug, custom-insulated blanket, providing consistent, reliable insulation performance.
Trust a Professional for Your BIBS Installation
The BIBS method requires specialized equipment and training to install properly. Installers must carefully monitor the density and ensure the cavities are completely filled without over- or under-packing. That’s why it’s essential to work with a certified professional insulation contractor experienced with the Blown-In Blanket System.
Ready to Experience the BIBS Difference?
If you’re building a new home or looking to achieve top-tier energy efficiency in a remodel, the Blown-In Blanket System offers one of the best insulation solutions on the market. It provides unmatched coverage, consistent performance, and can help lower your energy bills for decades to come.
Want to learn more or get a free quote?
Reach out to our team at Lonestar Air Sealers today! We’d be happy to discuss whether the Blown-In Blanket System is right for your project and show you how it can make your home more comfortable and energy-efficient all year long.