What is the difference between blown-in insulation and batt insulation?

Batt insulation comes in pre-cut panels and is one of the most common forms of insulation available. “Blow-in” refers to a method of installation—blown-in, or blow-in, insulation is installed with a special blowing device. Blown-in insulation comes in loose-fill form and is ideal for irregular and hard-to-reach areas.

Can cellulose insulation be blown in?

Yes. In existing structures, cellulose is often blown into the wall cavity through the wall sheathing. For new construction, cellulose is typically damp-sprayed or installed dry behind netting. Damp-sprayed cellulose is usually ready for wall covering within 24 hours. Cellulose can also be blown dry into netting installed over building cavities. The best insulation usually has less to do with the type, and more to do with the application. Proper installation of insulation completely fills the cavity you’re insulating. Cut-rate insulation contractors may leave voids or gaps in coverage that kill your insulation’s performance.

Is blown insulation safe?

If you’re working in your attic, it’s important to take precautions to protect your eyes, skin, and lungs. Wear goggles to protect your eyes from insulation, not safety glasses, since safety glasses can let dust in. Wear gloves and a disposable dust mask, too. Fiberglass insulation is made with glass fibers that can irritate the skin.

Blown-In Fiberglass Insulation in Boise, ID

Looking to upgrade your home’s comfort and energy efficiency? Whether you’re a homeowner or builder, Big City Insulation of Idaho provides expert blown-in fiberglass insulation services in Boise and the Treasure Valley.

Blown insulation

Why Choose Blown-In Insulation?

Blown-in insulation—also known as loose-fill insulation—is ideal for:

Attics: Fills gaps and hard-to-reach areas for better coverage
Walls: Great for retrofit projects and new builds using BIBS (Blow-In Blanket System)
Basements & Crawl Spaces: Helps regulate temperature and moisture
Garages & Additions: Boosts comfort in under-insulated areas

Benefits You’ll Notice

Lower heating and cooling bills
Quieter indoor spaces with reduced sound transfer
Improved HVAC performance
Better moisture control and mold prevention
A more comfortable home year-round

Serving Homeowners & Builders

We work with:

Homeowners: Retrofitting older homes or prepping for renovations
Builders & Contractors: New construction projects, metal buildings, and commercial spaces

What Is BIBS?

The Blow-In Blanket System (BIBS) utilizes a fabric barrier to secure blown-in fiberglass in place, resulting in a seamless thermal blanket that fills every cavity, including those around wiring and pipes.

Tech installing insulation

Safe, Clean Installation

Our team uses specialized equipment to install insulation with minimal mess and maximum coverage. We follow safety protocols to protect your home and our crew.

Frequently Asked Questions

What’s the difference between blown-in and batt insulation?
Batt insulation comes in pre-cut panels. Blown-in insulation is loose-fill and installed with a blowing machine—perfect for irregular spaces and retrofits.

Can cellulose be blown in instead of fiberglass?
Yes! Cellulose is another loose-fill option, often used in wall cavities. We’ll help you choose the best material for your project.

Is blown-in insulation safe?
Absolutely. We wear protective gear during installation, and fiberglass insulation is non-combustible and moisture resistant.

Ready to Insulate Smarter?

Contact Big City Insulation of Idaho for a free estimate or to schedule your insulation upgrade. We proudly serve Boise, Nampa, Meridian, and surrounding communities.