Blown In Insulation - Same-Day Service, Done Right the First Time

Blown In Insulation Installed Nationwide

Blown in insulation is the fastest way to bring a thin or settled attic back up to a proper R-value without tearing anything apart. A hose feeds loose material across the attic floor, and it fills the gaps around joists, wiring, pipes and odd corners that batt rolls always miss. Woolsey Attic Insulation has installed it since 2002, working as part of the Kingswell family of independently owned and operated insulation companies. We serve homes across the United States with background-checked, uniformed technicians, and a live person answers the phone 24/7 at (325) 240-5411. You get a written price before any work begins, and every job carries the Kingswell Guarantee in writing.

Call (325) 240-5411

Most homes we visit have attic insulation that was fine when the house was built and is now too thin, too compressed, or too uneven to do its job. Blown in insulation fixes that in a single visit, usually in a few hours. Glenn Hartley leads the Woolsey team with a simple standard: if the number changes at the door, the deal is off. That’s the Kingswell Way.

Key Takeaways

• Most blown in insulation jobs run between $1,200 and $2,800 for a standard attic, depending on square footage, material and target R-value. You get the exact written number before work starts.
• Most attics are finished in one day. A typical blown in job takes about 3 to 5 hours on site.
• We install cellulose and fiberglass from Knauf, CertainTeed, Owens Corning, Johns Manville and GreenFiber, matched to your climate zone.
• The 365-Day Done Right Promise covers every job in writing: if it isn’t right within a year, we come back and fix it at no charge.

Cellulose Insulation

Cellulose insulation is made from recycled paper fibers treated with a borate fire retardant, and it is one of the two materials we blow into attics most often. It packs densely, so it fights air movement better than fluffy fiberglass at the same depth, and it delivers a bit more R-value per inch. Cellulose is a strong choice for older homes with irregular joist spacing, because it flows around obstructions instead of bridging over them. Woolsey Attic Insulation installs GreenFiber and other trusted cellulose products. A typical cellulose job costs $1,300 to $2,800 for an average attic, and the written price arrives before any bags come off the truck.

What Borate Treatment Does

The borate treatment gives cellulose its fire resistance and also makes it unattractive to many insects and rodents. It does not make an attic pest-proof, so we still look for entry points and seal them before we blow anything in.

Settling and Depth

Cellulose settles a little after installation, which is normal. We calculate the installed depth so the settled R-value still meets your target, and we mark the depth on the attic rulers so you can check it yourself.

Blown In Attic Insulation

Blown in attic insulation is loose-fill material installed across the attic floor, over the ceiling of the living space below. It is the most common blown in application because the attic is where most homes lose the most heat in winter and gain the most in summer. Before we start, we measure the existing depth, check for moisture and pests, and confirm the ventilation is moving air. Installation covers the full floor, with baffles at the eaves so the soffit vents stay open. Blown in attic insulation typically runs $1,200 to $2,800 for a standard single-family home. If you want a broader look at the service, see our attic insulation page.

Baffles and Vent Chutes

Loose material will block soffit vents if nobody stops it. We staple baffles at every rafter bay along the eaves, which keeps a clear air path from soffit to ridge. Skipping this step is one of the most common mistakes we see in jobs done by someone else.

Can I Add It Over Old Insulation?

Often yes. If the existing material is dry, clean and reasonably level, new loose fill can go right on top. If it is wet, moldy or full of droppings, it has to come out first, and we will tell you which case you have after the inspection.

Blown In Cellulose Insulation

Blown in cellulose insulation is the same recycled-fiber product, applied with a machine that shreds the bales and pushes the material through a hose. The machine matters. A good blower breaks the cellulose into an even, fluffy texture so it reaches the right density, and a poor setup leaves clumps and voids. Our crews work from the far corners of the attic back toward the hatch, so nobody walks on finished insulation. Many homeowners choose blown in cellulose when they want a lower-cost option with strong air-blocking performance. Pricing generally falls between $1,300 and $2,800 and is confirmed in writing first. We can also pair it with air sealing, which you can read about on our attic air sealing page.

Why Cellulose Fits Older Homes

Older attics rarely have clean, evenly spaced joists. Cellulose flows around knob-and-tube remnants, bracing and uneven framing, so you end up with fewer thin spots and a more even blanket across the whole floor.

Dense Pack for Walls

Blown in cellulose can also be dense packed into closed wall cavities through small holes. It is a way to insulate finished walls without opening them up, and we will tell you plainly whether your walls are a good candidate.

Blown In Fiberglass Insulation

Blown in fiberglass insulation is made of fine glass fibers that are lighter than cellulose, hold their loft, and settle very little over the years. It does not absorb water the way paper fibers can, which makes it a sensible pick in humid climates or in attics where an older roof leak is a concern. Fiberglass also removes more easily if you ever need to re-insulate or add spray foam later. Woolsey Attic Insulation installs Knauf, CertainTeed, Owens Corning and Johns Manville loose-fill fiberglass. Expect roughly $1,200 to $2,600 for an average attic, with your exact written price delivered before the job.

Fiberglass or Cellulose?

Neither one wins every time. Fiberglass stays fluffy and resists moisture. Cellulose blocks more air at the same depth. We look at your attic, your climate zone and your budget, then recommend one in plain words. If we think you would be better served by batts or foam, we say so.

Working Safely With Glass Fibers

Our technicians wear respirators, gloves and eye protection, and we keep the work area sealed from the living space. When we leave, the attic access is closed up and the floors below are exactly as we found them.

Loose Fill Insulation

Loose fill insulation is the general name for any insulation that comes as small fibers or granules and is installed by blowing or pouring it into place. Cellulose, fiberglass and mineral wool all come as loose fill. The big advantage is coverage: loose fill settles into every crack and corner, so you do not get the gaps that show up when rolls are cut to fit around obstructions. It also adds depth quickly, which is how most attics reach R-38 to R-60 in a single visit. Loose fill is not the right tool everywhere. In a vaulted ceiling or an attic with a low, finished floor, other methods work better. Our spray foam insulation service covers those cases.

Blown In Insulation Contractors

Blown in insulation contractors range from true insulation specialists to general crews who do it as a side job, and the difference shows up in the finished depth and the details. A good contractor measures before and after, installs baffles, keeps material away from recessed lights and flues, and leaves proof of the depth they installed. Woolsey Attic Insulation has focused on attic and spray foam insulation since 2002, so every technician knows how insulation interacts with ventilation, air leaks and moisture. Most blown in jobs we perform fall between $1,200 and $2,800, and you hold the written price before the first truck rolls. Every technician is background-checked and uniformed.

What a Specialist Checks First

We look at ventilation balance, air leaks around plumbing stacks and can lights, and any sign of moisture before recommending a single bag. Adding insulation over an active moisture problem only hides it under a deeper layer. We would rather find the cause first.

The Kingswell Guarantee in Practice

Every job runs on a written price before work starts, a committed arrival window, a clean job site, and a written guarantee for 365 days. It is printed on the document you sign before we begin, not offered as a verbal promise.

Brands We Service

We install eight leading insulation brands and pick based on your house, not on what happens to be on the truck. Knauf makes excellent loose-fill fiberglass that holds its loft and installs cleanly. CertainTeed offers a full blown-in line with a long record in the building trade. Owens Corning and Johns Manville both supply dependable fiberglass for standard attic upgrades, and GreenFiber is our usual cellulose. For jobs that call for other methods, we also work with Rockwool, Icynene and Demilec. If you already have a preferred brand, tell us and we will work with it.

Signs You Need a Pro Right Now

• You can see the joists. If the top of your ceiling joists is visible from the attic hatch, you almost certainly have less than the recommended depth. That is a quick, low-cost fix with blown in material.
• Some rooms are always too hot or too cold. Uneven coverage lets conditioned air escape in spots. The room under the thinnest part of the attic is usually the one that never feels right.
• Your energy bills keep climbing. When heating and cooling costs rise faster than rates, the attic is a likely leak. The U.S. Department of Energy estimates most homes are under-insulated.
• Existing insulation looks flat or packed down. Compressed material loses much of its R-value. Fluffing it back up is not possible, so new loose fill goes over or replaces it.
• Ice dams form on the roof edge in winter. Heat leaking into the attic melts snow unevenly. More insulation, plus air sealing, usually stops it.

Our Process, Step by Step

1. 1
   Call and talk to a live person. No voicemail maze, no call-back window. When you call (325) 240-5411, a real person answers 24/7 and puts your job on our schedule.
2. 2
   Inspection and written quote. A background-checked technician measures the attic, checks existing depth, ventilation and moisture, and gives you a written price. That number does not change at the door.
3. 3
   Prep and sealing. We protect floors, set up the hose and blower, install baffles at the eaves, and seal obvious air leaks where needed. If old material has to come out first, we handle it through our insulation removal service.
4. 4
   Blowing the insulation. The crew works from the far end of the attic back to the hatch, hitting the target depth across the whole floor, and marks depth rulers you can read yourself.
5. 5
   Cleanup and written guarantee. We clean up before we leave, and every job gets a written guarantee for 365 days. If anything is not right in that year, we come back at no charge.

How Much Does Blown In Insulation Cost?

Where We Work

Woolsey Attic Insulation serves homeowners across the United States through local crews under the Kingswell banner. Each location is independently owned and operated, so the crew at your door is part of your community. Wherever you are, the standard is the same: a written price before work starts, a committed arrival window, a clean job site and a written guarantee on every job. Call and we will connect you with the Woolsey team nearest you.

Frequently Asked Questions About Blown In Insulation

Schedule Your Blown In Insulation Today

If your attic insulation is thin, settled or uneven, the fix starts with one phone call. Call (325) 240-5411 and talk to a live person, any hour of the day or night. We will schedule a visit, take measurements and hand you a written price before any work starts. No obligation, no door-step surprises, and every job covered by the Kingswell Guarantee in writing. That is how we have done it since 2002, and it is the only way we will. Call today. You can also start from our home page to see everything we install.

Written by Glenn Hartley, Owner at Woolsey Attic Insulation, serving homeowners across the United States since 2002.