Blown-In Insulation
Effective insulation is key to maintaining indoor comfort and improving energy efficiency. Our blown-in insulation services provide a flexible and reliable solution that fills gaps and hard-to-reach spaces with ease, helping eliminate drafts and reduce energy loss. Whether you're insulating an attic, upgrading wall cavities, or enhancing existing insulation, our experienced team ensures professional installation with consistent, lasting results.
Blown-in insulation forms a dense, even layer that minimizes heat transfer in the winter and keeps interiors cooler in the summer—leading to noticeable savings on heating and cooling bills. It also offers sound-dampening benefits and can help improve indoor air quality by reducing air infiltration. Ideal for attics, walls, and irregularly shaped areas, our blown-in insulation delivers effective coverage, energy efficiency, and year-round comfort.
What Is Blown-In Insulation
Blown-in insulation is a type of loose-fill insulation made from materials like fiberglass or cellulose that is installed using a specialized blowing machine. Unlike batt insulation, which comes in pre-cut panels, blown-in insulation is applied by filling cavities and hard-to-reach areas with a consistent layer of insulation. This method allows the material to conform around wiring, plumbing, and irregular framing, creating a seamless thermal barrier.
Blown-in insulation is ideal for attics, wall cavities, and retrofit projects, offering excellent coverage and helping to reduce air leaks, improve energy efficiency, and enhance indoor comfort. Its flexible application and ability to tightly fill gaps make it a reliable solution for both new and existing homes.
The Different Types Of Blown-In Insulation
Blown-In Fiberglass Insulation
Lightweight. Fire-Resistant. Cost-Effective.
Blown-in fiberglass is a popular loose-fill insulation made from tiny spun glass fibers. Installed using a specialized blowing machine, it easily fills wall cavities, attics, and other hard-to-reach or irregularly shaped spaces. This method ensures a more complete coverage compared to batt insulation, minimizing thermal gaps and increasing overall energy efficiency. Its non-combustible nature adds fire protection, while its stable thermal performance holds up well over time without significant settling.
Blown-in fiberglass also resists moisture and pests better than many organic insulation materials, making it a durable and low-maintenance choice for both retrofits and new construction. It’s a great option when you need quick, effective coverage especially in areas where batt installation would be difficult or time-consuming.
With a typical R-value of R-3.2 to R-4 per inch, it's a versatile, budget-friendly solution for improving comfort and reducing energy bills.
Best for:
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Attics (especially open attics)
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Enclosed wall cavities (using dense-pack method)
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Topping off over existing insulation
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Residential retrofits
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Hard-to-reach or irregularly shaped spaces
Blown-In Cellulose Insulation
Eco-Friendly. Dense. Efficient.
Blown-in cellulose insulation is primarily composed of recycled newspaper and other plant-based fibers, treated with non-toxic fire-retardant chemicals for added safety. As a denser material than fiberglass, it effectively reduces air infiltration and provides excellent thermal performance. Its density also contributes to superior soundproofing, making it a great option for interior partitions or multi-story buildings.
When installed using the dense-pack method, cellulose can function as both insulation and an air barrier, improving energy efficiency by sealing off drafts and minimizing heat loss. It molds easily to fit around pipes, wiring, and framing, making it ideal for older homes or irregular cavities. As one of the most environmentally friendly insulation options available, it’s a top choice for green building projects.
With an R-value of approximately R-4' per inch, cellulose performs especially well in colder climates and is known for helping maintain consistent indoor temperatures.
Best for:
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Attics
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Walls (with dense-pack method)
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Soundproofing between floors
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Eco-conscious and sustainable building projects
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Older homes with irregular cavities
Wet Cellulose
Seamless. Dense. Air-Sealing.
Wet-spray cellulose insulation uses the same core material as dry cellulose recycled newspaper treated with fire-retardants—but it’s a different application altogether, requiring its own specialized spray equipment. Unlike traditional blown-in cellulose, which is dry and loose, wet-spray is mixed with a small amount of water or adhesive at the point of application. This allows it to stick directly to open framing without the need for netting or drywall, forming a dense, seamless layer.
This method is not technically a blown-in system, it’s sprayed rather than blown, and the equipment and purpose are distinctly different. The spray process allows it to fully conform to cavities, pipes, and wiring while dramatically reducing air leaks and gaps. Once dry, it retains its form and density, helping maintain consistent thermal and acoustic performance.
With an R-value of around R-3.5 per inch, wet-spray cellulose delivers excellent insulation and contributes to air sealing, making it ideal for new builds and energy-efficient construction.
Best for:
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New construction
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Open wall cavities
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Custom home builds
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Projects needing thermal and sound control
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High-performance renovations with exposed framing
The Different Types Of Blown-In Insulation
The different types of blown-in we offer here at JB Spray Foam Insulation
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Blown-In Fiberglass Insulation- Blown-in fiberglass insulation is composed of finely spun glass fibers and is commonly used for insulating attics, walls, and hard-to-reach areas. It's lightweight, non-combustible, and resistant to moisture, making it a durable option for maintaining energy efficiency and indoor comfort. Installed using a blowing machine, it creates a fluffy, even layer that fills gaps and voids, reducing air leakage and thermal bridging. With a stable R-value and excellent coverage, blown-in fiberglass is ideal for homeowners seeking a clean, efficient, and cost-effective insulation solution.
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Blown-In Cellulose Insulation- Blown-in cellulose insulation is made primarily from recycled paper products treated with fire-retardant chemicals, offering an eco-friendly and highly effective thermal barrier. Its dense composition allows it to settle tightly around pipes, wiring, and irregular framing, minimizing air gaps and improving energy retention. Cellulose also provides superior sound control and is particularly well-suited for retrofitting existing homes. Its high recycled content and ability to slow airflow make it a sustainable choice for those looking to improve comfort while reducing their environmental impact.
Tailored solutions for every project
Retrofits, New Construction, and Commercial Insulation
Whether you're a homeowner upgrading your attic, a contractor working on new construction, or managing a commercial project, our blown-in insulation adapts to your needs. We provide expert installation with fast, reliable results for all types of spaces.
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Quick and clean installation process
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Great for irregular or hard-to-reach areas
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Excellent thermal performance and air sealing
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Ideal for attics, retrofits, and enclosed cavities
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Eco-friendly cellulose options available
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Helps reduce sound transfer between floors and walls
Our Installation Process
At JB Spray Foam Insulation, we follow a precise, code-compliant process to ensure your batt insulation performs at its highest potential.
Step-by-Step:
1. On-Site Evaluation & Estimate
Every project begins with an on-site walkthrough where we assess framing, identify key areas for insulation, and verify conditions such as moisture, obstructions, or accessibility. We then provide a clear, itemized estimate based on square footage, material selection, and local code requirements. No guesswork — just honest, informed recommendations.
2. Expert Installation
Our trained installers apply each system using the proper method for the material and application. Whether installing spray foam, batt, blown-in insulation, or specialty systems, we focus on complete coverage, correct thickness, and proper sealing to ensure optimal performance. Every installation is completed according to manufacturer specifications and industry best practices.
3. Quality Assurance
Once installation is complete, we perform a detailed quality check of all treated areas. This includes verifying coverage, depth, adhesion or fit, and overall consistency. We follow manufacturer guidelines and energy code standards to ensure long-term performance, comfort, and inspection readiness.
4. Final Prep for Inspection
Before wrapping up, our crew ensures the site is clean, organized, and prepared for the next stage whether it’s drywall or city code sign-off. We take pride in delivering work that meets inspection standards the first time, minimizing delays for builders and homeowners.
Ready to insulate with confidence?
At JB Spray Foam Insulation, we take pride in providing insulation solutions that actually make a difference. With blown-in fiberglass and cellulose options, we help you get the comfort, performance, and savings your space deserves without the mess or stress.
