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What Is BIBS? Blown-in Blanket Insulation System

The Blow-In Blanket System (BIBS) is a top choice among insulation systems due to its impressive range of innovative, and state-of-the-art properties. If you are thinking about insulating your property, you should know that not all insulation is the same. Each system has its unique functions and applications. Discover why property managers of residential and commercial buildings often favor BIBS.

BIBS Insulation System: What Is It?

BIBS is an exceptional insulation system that utilizes specially manufactured fiberglass wool to insulate walls, attics, floors, ceilings, and other areas of a home. Unlike other insulation methods, BIBS forms a seamless "blanket" around obstructions like wires and pipes, ensuring a custom fit every time.

The system is supported by a proprietary fabric that delivers high performance and density. One of the key advantages of BIBS is its outstanding thermal efficiency, providing a high R-value of 4.2 at a cost-effective rate. BIBS makes the initial investment worthwhile by significantly reducing heating and cooling costs.

In addition to its energy efficiency benefits, BIBS even reduces air gaps more than 68% better than traditional batting insulation. It provides excellent sound control and can be installed in any climate. BIBS is also highly durable and consists of at least 25% recycled materials, making it a long-lasting, eco-friendly investment.

BIBS remains a popular choice for new and existing buildings with wood or steel frames. Its uniform density prevents settling issues that occur with other insulation systems. Besides, BIBS is naturally incombustible and does not support mold growth, even if moisture enters the wall cavity.

BIBS insulation is a certified system that meets the standard of Energy Star regulations for Grade 1 insulation. Homeowners should check with their contractors whether the BIBS insulation they intend to install uses the specific insulation fabric and fiberglass fibers that are BIBS system-approved.

How Is BIBS Different Than Fiberglass Batts?

Fiberglass batts consist of glass fibers created from heated sand and held together by adhesives, with modern versions using acrylic binders instead of formaldehyde.

Compared to BIBS insulation utilization of pure adhesive-free fiberglass blown into a wall cavity behind a polypropylene fabric. This structure renders it inert and reusable, preventing moisture absorption and making it insect-resistant while warding off mold and rodents.

The fiberglass insulation is pre-cut and manually installed, causing itchiness due to adhesive exposure. Achieving proper density and filling voids might seem challenging, especially with irregular features. Contrarily, the BIBS system involves stapling polypropylene netting over the cavity and blowing fiberglass through a hose.

Unlike batt insulation, BIBS requires certified contractors to secure uniform density and custom-fill the cavity, enabling a more precise and effective installation. For performance, fiberglass batts have an R-value ranging from R 2.9 to 3.8, with installation challenges often revealed through thermal imaging.

On the other hand, BIBS boasts an R-value of 4.2 per square inch, offering higher insulation efficiency. Fiberglass is often used and cost-effective, with lower insulation costs but more potential drawbacks when poorly installed.

In contrast, BIBS insulation usually requires a slightly higher investment—typically costing 30% to 50% more than fiberglass batts. However, it justifies this expense by delivering a superior R-value, exceptional cavity filling, and excellent sound control. These traits make this insulation system regarded by building owners as a worthwhile investment.

Which is better blown-in insulation or batting?

Blown-in insulation is better than batting in many cases. However, some homeowners preferred fiberglass batting insulation due to its effectiveness, efficiency, and installation cost. BIBS insulation is often more suitable for addressing under-insulated walls and crawl spaces, making it the best choice for re-insulation projects.

Otherwise, reinsulating with standard fiberglass batts would necessitate removing the drywall to access the space between joists, a costly, messy, and time-consuming project.

What is the R-value of blown-in blanket insulation?

The R-value of blown-in blanket insulation is 3.2 to 4.2, depending on the material and installation location within the house. With its higher R-value, it surpasses fiberglass batt insulation in energy efficiency. BIBS insulation maintains a superior performance throughout its lifespan. As a result, it stands out as one of the most effective insulation options currently available in the market.

What Is BIBS Insulation Made Of?

BIBS insulation is manufactured with custom-designed blown-in fiberglass wool, ensuring a snug fit around pipes and other irregular features. This design provides excellent thermal protection and a high R-value.

It is also recognized as one of the most environmentally friendly insulation options due to its composition of at least 25% recycled material. Another component used in BIBS is cellulose, a nonflammable plant-based fiber that enhances a building's fire safety.

How to Install BIBS Insulation

The BIBS installation process is a specialized procedure handled by certified professionals. The BIB netting attaches to the frame, facilitating the pumping of insulation into framing cavities through a blowing tube.

This streamlined process minimizes the mess associated with traditional methods while providing a high-density, tight fill. The following steps outline the process undertaken by insulation experts to ensure optimal performance and efficiency:

  1. Check personal protective equipment (PPE), such as respirators, safety glasses, and gloves, and wear it at all times during the installation
  2. Set up barrier to control the insulation process and prevent unwanted dispersion
  3. Use pneumatic blowing system to affix breathable fabric to wall cavity for a stable base
  4. Create precise hole in insulation fabric for effective cavity filling
  5. Insert tube into cavity bottom and systematically withdraw it during insulation for total coverage
  6. Pump fiberglass wool into netting using specialized blowing machines to create densely packed wall cavities

How to Remove and Dispose of BIBS Fiberglass Insulation

Homeowners should recognize the danger of inhaling BIBS fiberglass insulation and call a professional to ensure safe removal and disposal. The pros will refrain from using standard dumpster disposal methods. Instead, they will contact the local waste authority for guidance on how to dispose of BIBS, which may involve a small fee at designated dump sites.

BIBS experts follow these straightforward steps for professional removal and disposal:

  1. Insert vacuum remover’s hose into wall cavity before extracting breathable mesh loose fibers, minimizing exposure to airborne fiberglass
  2. Access attic and manually remove fiberglass insulation by rolling up and placing in bags, or use vacuum cleaner with HEPA filter for safe containment
  3. Dispose of insulation privately for a fee or drop off at specialized waste facilities like building materials disposal sites

Is BIBS Insulation Eco-Friendly?

BIBS insulation stands out as an environmentally friendly option due to its composition. The fibers used in BIBS insulation contain a minimum of 25% recycled materials, demonstrating a commitment to sustainability. The remaining 75% consists of newly manufactured insulation made from raw materials.

These raw materials, such as silica sand, limestone, and soda ash, are sourced from the Earth's crust, and their extraction and manufacturing processes have associated environmental impacts. BIBS system creates minimal material waste, using only the necessary amount of fiber to fill the wall cavities, reducing waste.

In contrast, batting insulation frequently produces excess pieces that require discarding. Besides, at the end of its lifespan, old or soiled fiberglass insulation often cannot be recycled and ends up in landfills. On the other hand, the biodegradability of blown-in cellulose and sheep's wool insulation makes them more eco-friendly.

Is BIBS Safe for Humans?

BIBS system presents minimal health risks when properly installed and sealed within the wall cavity. The only potential concerns arise during installation or removal because tiny fiberglass fragments may become airborne, potentially causing skin irritation and rashes.

Wearing a respirator, long sleeves, and gloves is advisable to minimize discomfort when working with fiberglass insulation. The BIBS insulation system is free from formaldehyde, chemicals, binders, and inks, ensuring a safer environment. BIBS insulation offers excellent fireproofing properties, eliminating the need for flame retardants, like those used in spray foam insulation.

The Benefits of BIBS Insulation

As a superior insulation solution, BIBS insulation offers a comprehensive range of advantages for new and existing buildings. Consider the following benefits of the BIBS system:

1. Shields Against Moisture and Outdoor Pollutants

BIBS ensures the correct density of fiberglass-blowing wool to create a vapor barrier against moisture, outdoor allergens, pollutants, and pests. The fiberglass used in BIBS insulation does not provide a habitat for insects or absorb water, preventing mold growth.

2. Better Energy Efficiency

BIBS insulation boasts a higher R-value than batt insulation, resulting in better efficiency and increased utility savings

3. Improved Thermal Performance

Blowing insulation into any building enhances heat flow and cooling thermal performance, providing a more consistent and comfortable temperature.

4. More Flexibility

BIBS can be installed in any climate, making it a versatile option for shifting environmental conditions. Building owners may also use it in new or existing buildings, making it a versatile choice.

5. Exceptional Durability

BIBS is a durable insulation solution and a rewarding investment. The densely packed nature of the fiberglass prevents fibers from slumping over time, maintaining stable thermal resistance.

6. Reduced Air Leakage

BIBS reduces air leakage, preventing the infiltration of outdoor pollutants and dust, thereby promoting a cleaner and healthier indoor environment.

7. Excellent Sound Resistance

The dense packing of BIBS insulation minimizes air gaps around structures like pipes, promoting effective sound reduction.

8. No Off-Gassing

The BIBS system is free from chemical treatments like formaldehyde, ensuring no off-gassing or harmful fumes in the home.

9. Superior Fire Safety

The fiberglass used in the BIBS insulation is incombustible, meeting ASTM C674 for smoldering combustion and ASTM E136 for non-combustion, enhancing the overall fire safety of a home.


Now that you know the benefits of a blown-in blanket insulation system, you can decide whether this solution is best for your home. Insulate your home with BIBS by contacting the best insulation company. Call iFoam at (855) 935-4723 to book a free consultation today!