Cost-Effective Attic Insulation That Delivers Results
Blown-in insulation (also called loose-fill insulation) is one of the most efficient and affordable ways to improve your attic's thermal performance. Using specialized equipment, we blow loose fiberglass or cellulose insulation into your attic, filling every nook, cranny, and irregular space that batts can't reach.
Whether you're building new, topping off existing insulation that has settled, or insulating an attic for the first time, blown-in insulation provides excellent coverage at a competitive price. Most installations are completed in just a few hours, and you'll start saving on energy bills immediately.
The Blown-In Insulation Advantage
Fast & Efficient Installation Most attic insulation projects are completed in 4-6 hours. We arrive, set up equipment, install insulation to your desired R-value, and clean up—all in a single day.
Fills Every Gap Unlike batts that must be cut and fitted, blown-in insulation conforms to irregular spaces, fills around joists and obstacles, and provides seamless coverage across your entire attic floor.
Cost-Effective Performance Blown-in insulation delivers excellent thermal performance at a lower cost than spray foam, making it ideal for homeowners looking to maximize value without compromising quality.
Boosts Existing R-Value If your attic already has some insulation but has settled over time or doesn’t meet current standards, we can top it off with blown-in insulation to reach recommended R-values.
Environmentally Friendly Options Cellulose insulation is made from recycled paper products (up to 85% recycled content), making it an eco-friendly choice for sustainability-conscious homeowners.
Fire Resistant Both fiberglass and cellulose blown-in insulation are treated to be fire-resistant, providing an additional layer of safety for your home.
Fiberglass vs. Cellulose: Which is Right for You?
Blown-In Fiberglass
- R-value: R-2.2 to R-2.7 per inch
- Lightweight and non-combustible
- Does not absorb moisture
- Won’t settle as much as cellulose over time
- Fire-resistant and mold-resistant
- Excellent for attics with moisture concerns
- Best for: Long-term stability, moisture-prone areas
Blown-In Cellulose
- R-value: R-3.2 to R-3.8 per inch
- Made from recycled paper products (eco-friendly)
- Higher R-value per inch than fiberglass
- Excellent at filling tight spaces and gaps
- Treated with fire retardants and insect repellents
- May settle 10-20% over time
- Best for: Maximum R-value per dollar, eco-conscious projects
Not sure which type you need? Our team will assess your attic conditions during your free inspection and recommend the best material for your specific situation.
Where We Install Blown-In Insulation
Attics The most common and effective application. Blown-in insulation creates a thick thermal blanket across your entire attic floor, preventing heat loss in winter and heat gain in summer.
Topping Off Existing Insulation Over time, insulation settles and loses effectiveness. We can add blown-in insulation on top of existing material to restore your attic to recommended R-values (R-38 to R-49 for Georgia).
New Construction Fast and efficient attic insulation for new builds. We work with builders to deliver quality installations on schedule.
Hard-to-Reach Spaces Blown-in insulation is perfect for tight attic spaces, low-clearance areas, and irregularly shaped attics where batts are difficult to install.
Walls (Dense-Pack Application) For existing wall cavities, we can use dense-pack blown-in insulation through small holes, providing effective insulation without tearing down drywall.
Our Blown-In Insulation Installation Process
1. Free Evaluation We assess your current insulation levels, measure your attic space, and determine the amount of insulation needed to reach your target R-value—at no cost.
2. Custom Quote We’ll recommend the best type of blown-in insulation (fiberglass or cellulose) and provide transparent pricing based on your attic’s square footage and desired R-value.
3. Professional Installation Our crew arrives with professional blowing equipment, protects your property, and installs insulation to the specified depth. We ensure even coverage and proper ventilation clearance.
4. Final Inspection & Cleanup We verify proper depth and coverage, clean up any debris, and answer your questions. You’ll notice improved comfort immediately.
Why Choose Southern Seal for Blown-In Insulation
Veteran-Owned Excellence We bring military discipline and attention to detail to every installation. No shortcuts, no sloppy work, no excuses.
Experienced Installation Team Our crew is trained in proper blown-in insulation techniques, ensuring even coverage, correct depth, and proper ventilation clearances.
Quality Materials We use premium fiberglass and cellulose products from trusted manufacturers that meet or exceed building code requirements.
Dependable Service Whether you’re a homeowner, builder, or contractor—we show up on time, complete work as scheduled, and deliver at the price quoted. Every time.
Proper Ventilation We ensure your attic maintains proper ventilation by installing baffles where needed and keeping insulation clear of soffit vents.
Blown-In Insulation FAQs
Considering blown-in insulation for your attic? We've answered the most common questions about blown-in insulation, from costs and performance to installation and maintenance. Don't see your question here? Give us a call—we're happy to help.
Book a Free EvaluationConsidering blown-in insulation for your attic?
We’ve answered the most common questions about blown-in insulation, from costs and performance to installation and maintenance. Don’t see your question here? Give us a call—we’re happy to help.
How much does blown-in insulation cost?
Blown-in insulation typically costs $1.50 to $3.00 per square foot, depending on the type of material (fiberglass or cellulose) and desired R-value. For an average 1,500 sq ft attic, expect to pay around $3,000. We provide detailed, transparent estimates during your free inspection.
What R-value do I need in my attic?
For Metro Atlanta (Climate Zone 3), the Department of Energy recommends R-38 to R-49 for attic insulation. During your inspection, we’ll measure your current R-value and recommend how much insulation to add to meet these standards.
How long does installation take?
Most blown-in attic insulation projects are completed in 4-6 hours, including setup and cleanup. You can typically remain in your home during installation.
Will blown-in insulation settle over time?
Cellulose insulation may settle 10-20% over its lifetime, which is why we install it slightly thicker to account for settling. Fiberglass settles less. Both materials maintain their effectiveness when installed properly.
Can you add blown-in insulation on top of existing insulation?
Yes! Blown-in insulation is perfect for topping off existing batt or blown-in insulation that has settled or doesn’t meet current R-value standards. We’ll assess your current insulation during the free evaluation.
Is blown-in insulation safe?
Yes. Both fiberglass and cellulose blown-in insulation are safe, non-toxic, and fire-resistant. Cellulose is treated with fire retardants and insect repellents for added protection.
Does blown-in insulation help with soundproofing?
Yes. Blown-in insulation provides some sound dampening properties, though it’s not as effective as open-cell spray foam for soundproofing applications.
How does blown-in insulation compare to spray foam?
Blown-in insulation is more affordable and excellent for attic applications. Spray foam provides superior air sealing and moisture control, making it ideal for crawl spaces and walls. We’ll help you choose the best option for each area of your home.
Ready to Lower Your Energy Bills?
Blown-in insulation is one of the fastest, most cost-effective ways to improve your home’s energy efficiency and comfort. Stop wasting money on heating and cooling—upgrade your attic insulation today.
Schedule your free evaluation today and discover how much you can save.
Service Areas
Proudly serving Metro Atlanta including: Alpharetta, Atlanta, Brookhaven, Cumming, Duluth, Johns Creek, Kennesaw, Lawrenceville, Marietta, Milton, Roswell, Sandy Springs, Suwanee, and surrounding areas.
Explore Our Other Insulation Services
Door & Window Weatherstripping
Stop drafts around doors and windows with weatherstripping. Simple solution for Atlanta homeowners. Free evaluations from Southern Seal Insulation.
View Service
Spray Foam Insulation
The gold standard for air sealing and insulation. Perfect for attics, crawl spaces, and new construction.
View Service
Air Sealing
Stop energy loss at the source by sealing gaps, cracks, and air leaks throughout your home or building.
View Service