Attic Insulation - Same-Day Service, Done Right the First Time

Trusted Attic Insulation Nationwide

Attic insulation is the single most effective upgrade a homeowner can make to cut energy waste, and most houses in this country don’t have enough of it. The U.S. Department of Energy estimates that roughly nine out of ten homes are under-insulated, which means conditioned air leaks into the attic all year long and utility bills climb while comfort drops. Woolsey Attic Insulation has specialized in attic and spray foam insulation only since 2002, working as part of the Kingswell family of independently owned and operated insulation companies. We install, upgrade, and remove attic insulation in homes across the United States, with background-checked, uniformed technicians on every job and a live person answering the phone 24/7 at (325) 240-5411. Every job starts with a written price before any work begins, and every installation carries the Kingswell Guarantee in writing.

Call (325) 240-5411

Wool was the first insulation. Woolsey keeps the idea in the name. And we’ve spent over two decades refining what that means in an attic: the right material for the climate zone, the right depth for the R-value target, and a written promise behind every square foot. 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 attic insulation jobs run between $1,500 and $3,500 depending on attic size, material, and access. We give you the exact written number before any work starts.
• Blown-in insulation and spray foam are our specialties, and we work with eight leading brands including Knauf, Rockwool, and CertainTeed.
• 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.
• A live person answers the phone 24/7. Not a voicemail maze, not a call-back window.

Blown In Insulation

Blown In Insulation is loose-fill fiberglass or cellulose that’s blown through a hose into the attic floor, filling gaps and covering irregular spaces more thoroughly than batt rolls can. Most homes with uneven or thin attic coverage are good candidates, especially older homes where original insulation has settled or compacted over time. Woolsey Attic Insulation installs blown-in insulation in homes across the country using Knauf, CertainTeed, and GreenFiber materials, matched to your climate zone and R-value target. Typical blown-in installation runs $1,200 to $2,800 for a standard attic, and you can see our Attic Insulation pricing before any work begins. We also handle removal and replacement when old blown-in material has been damaged by moisture, pests, or decades of settling.

Cellulose and Fiberglass Options

We carry both cellulose and fiberglass blown-in products. Cellulose offers a slightly higher R-value per inch and is treated with a fire retardant. Fiberglass is lighter, won’t settle as much, and is easier to remove later if you ever need to re-insulate. We’ll walk you through the trade-offs for your specific attic condition.

When Blown-In Makes Sense

Blown-in is usually the most economical route when your attic floor has no major moisture or pest damage and you want to raise the R-value quickly. It’s also the preferred method for tight or awkward attic spaces where batt rolls would leave uninsulated gaps around trusses, wiring, and ductwork. We’ll never sell you blown-in if spray foam or batt material is a better long-term fit for the attic’s actual conditions.

Insulation Contractors

Insulation Contractors are the crews that install, remove, or upgrade attic insulation, and the quality difference between a true specialist and a general handyman is substantial in this trade. You need a specialist when the job involves air sealing, ventilation coordination, moisture control, or removal of contaminated material. Woolsey Attic Insulation has focused exclusively on our Attic Insulation in Los Angeles and spray foam work since 2002, which means every technician on your roof deck knows how insulation interacts with the rest of your attic system. Most insulation contractor work we perform falls between $1,500 and $3,500, and your exact written price is delivered before the first truck rolls. Every technician is background-checked and uniformed, so you know exactly who’s walking through your door.

What a Specialist Checks First

A real insulation contractor doesn’t just add material. We look at your attic’s ventilation balance, existing air leaks around plumbing stacks and can lights, and any signs of moisture before we recommend anything. Adding insulation to an attic with active moisture problems just hides the problem behind a deeper layer of fluff. We’d rather find the root cause before we install a single bag of anything.

The Kingswell Guarantee in Practice

Every insulation job we do runs on The Kingswell Way: a written price before work starts, a committed arrival window, a clean job site, a written guarantee on the work, and a free return visit if anything fails within the guarantee period. That last part is 365 days, in writing, included on every job. It’s not a verbal promise; it’s printed on the document you sign before we begin.

Attic Ventilation

Attic Ventilation is the system of intake and exhaust vents that keeps air moving through the attic, preventing heat and moisture from getting trapped against the underside of your roof deck. Insulation without proper ventilation doesn’t work the way it should: trapped moisture condenses, wood rots, shingles curl early, and the insulation itself can start to mat down and lose R-value. Woolsey Attic Insulation evaluates ventilation as part of every insulation job, because the two systems can’t be separated. Ventilation correction or installation typically runs $300 to $1,200 depending on the number of vents, roof configuration, and whether we’re adding soffit intake, ridge exhaust, or both. Your written price comes before work starts, and the Kingswell Guarantee covers the full scope.

Intake and Exhaust Balance

A working attic ventilation system needs roughly equal intake at the soffits and exhaust at or near the ridge. If you have plenty of ridge vent but no soffit intake, air doesn’t flow; it just stagnates. We check the shortfall and correct the side that’s missing, not just add more of what’s already there.

Ventilation Before Insulation

If your attic ventilation is failing, installing more insulation on top of it makes the moisture problem worse, not better. That’s why we check ventilation balance first and make recommendations in writing before any insulation goes in. It’s the only way to keep the 365-Day Done Right Promise honest: fix the underlying conditions, then insulate for the long term.

Radiant Barrier

Radiant Barrier is a reflective foil material installed under the roof deck to reflect radiant heat away from the attic space, reducing summertime heat gain and helping your existing insulation work more effectively. Homes in hotter climates see the biggest benefit, especially attics with ductwork running through them. Woolsey Attic Insulation installs radiant barrier in attic spaces across the country, often combined with ventilation and air sealing work. Radiant barrier installation typically runs $800 to $2,200 depending on attic size, roof pitch, and accessibility. As with every Woolsey job, the written price lands in your hands before any material comes off the truck.

How Radiant Barrier Helps

Radiant barrier doesn’t replace insulation; it reduces the radiant heat load on the attic so your insulation doesn’t have to fight as hard. In a hot attic, the underside of the roof deck can reach 130 degrees or more, and that heat radiates down onto the attic floor and into your living space. Reflective foil sends much of that heat back out, which can lower attic temperatures by 20 to 30 degrees on a sunny afternoon.

Radiant Barrier and Spray Foam

Radiant barrier pairs well with spray foam insulation, and spray foam insulation is one of our core specialties. When you seal the attic with foam and reflect radiant heat away with foil, the attic approaches the temperature of the living space below. We’ll tell you plainly whether radiant barrier is a worthwhile investment for your house or whether your budget is better spent on deeper insulation.

Attic Cleaning Services

Attic Cleaning Services cover removal of old insulation, debris, dust, pest droppings, and other contaminants from the attic space, usually before new insulation goes in. This is a job worth doing properly: a dirty attic undermines air quality for the whole house, and installing fresh insulation over contaminated material just seals the problem in. Woolsey Attic Insulation provides full attic cleaning before re-insulation, using commercial vacuums and containment to keep the mess out of your living space. Attic cleaning typically runs $700 to $1,800 depending on attic size, contamination level, and whether old insulation removal is included. You’ll get the written price before we start, and the job site will be cleaner than we found it when we’re done.

When Your Attic Needs Cleaning

You need attic cleaning if you see visible pest droppings, if animals have nested, if insulation is damp or compressed, or if the attic hasn’t been touched in 20 years and the dust layer looks like a carpet. Old fiberglass and cellulose hold dust, allergens, and sometimes mold spores. Cleaning it out before new insulation goes in is the only way to start fresh.

Containment During Removal

We don’t drag old insulation through your hallway in garbage bags. We use negative-pressure vacuums and sealed access points to keep contaminated material contained in the attic and out of your home. The Kingswell Guarantee includes a clean job site, and we mean the whole house, not just the attic floor.

Attic Mold Removal

Attic Mold Removal addresses mold growth on roof sheathing, rafters, and insulation caused by trapped moisture from failed ventilation, roof leaks, or bathroom fans vented into the attic. Mold in an attic is a symptom of a moisture problem, so removing it without fixing the moisture source only works until the next humid season. Woolsey Attic Insulation treats mold at the source: we remove contaminated insulation, remediate affected wood, correct the ventilation or air-sealing problem that caused it, and then install new insulation. Mold removal and re-insulation typically runs $2,000 to $4,500 for an average attic, and your written price is fixed before work begins.

Mold Means Moisture

Attic mold never appears without a moisture source. It’s either roof leaks, bathroom exhaust fans blowing warm humid air into the attic, or blocked soffit vents trapping moisture. Our technicians trace the moisture before touching the mold, because remediation without correction is just a paid delay of the same problem.

Remediation and Replacement Together

Mold-contaminated insulation has to come out, not just be sprayed over. We remove the affected material, treat the wood, dry the space, and install new insulation that meets current R-value standards. Because every job is covered by the 365-Day Done Right Promise in writing, we only do this work when we know the moisture source is actually fixed. If it comes back, we come back, at no charge.

Attic Insulation Removal

Attic Insulation Removal is the controlled extraction of old, damaged, or contaminated insulation from the attic, usually as the first step before air sealing, re-insulation, or mold remediation. You need removal when insulation is wet, moldy, pest-infested, compacted beyond usefulness, or when you’re upgrading from old fiberglass to spray foam. Woolsey Attic Insulation handles full removal and disposal with commercial vacuums and proper containment. Attic insulation removal alone typically costs $700 to $1,500, and the exact written price is yours before any work begins. We’ll also coordinate removal with the replacement insulation so your home never sits uninsulated longer than necessary.

Why Removal Beats Topping Off

It’s tempting to just blow new insulation over old, and sometimes that’s fine. But when the old material is wet, moldy, or packed with rodent droppings, topping it off is a waste of money and a health question for your household. We’ll tell you honestly which category your attic falls into, and we won’t sell you a layer of new fluff over a problem that needs to come out first.

From Removal to Replacement

The removal process is loud and dusty, but we contain it. Our vacuums run to a sealed truck outside, so the dust doesn’t drift through your house. Once the attic is empty, we inspect the deck and framing, air-seal the gaps, and install new insulation matched to your climate zone and budget. The whole job, from removal to replacement, carries one written guarantee.

Brands We Service

We work with eight leading insulation brands and we choose based on what fits your home, not whatever happens to be on the truck. Knauf makes some of the best fiberglass and mineral wool insulation available today, and we use their products regularly for blown-in and batt applications where consistent R-value and clean installation matter most. Rockwool’s stone wool insulation is our go-to when homeowners want material that resists moisture, doesn’t burn, and adds real soundproofing to interior walls and ceilings. We’ve installed Rockwool in hundreds of attics and recommend it often in humid climates where mold resistance is a priority.

CertainTeed brings a full line of fiberglass insulation and has a long reputation in the building products trade. Their blown-in and batt products work well in standard attic upgrades, and we trust their quality control for consistent performance. We also work with Icynene spray foam products, Demilec spray foam, Owens Corning fiberglass, Johns Manville, and GreenFiber cellulose. Whether you have an existing brand preference or want us to recommend the right material for your house, we can help.

Signs You Need a Pro Right Now

• Ice dams forming on your roof edges in winter. Ice dams mean heat is leaking into the attic and melting snow unevenly, which points to insufficient insulation or failed air sealing. Left alone, ice dams force water under shingles and rot the roof deck.
• Rooms that never reach the thermostat setting. If one room is always freezing in winter or baking in summer, the attic above it is usually the culprit. Uneven insulation coverage lets conditioned air escape in specific spots.
• Utility bills climbing year over year. When your heating and cooling costs rise faster than the rate schedule, your attic insulation is often the leak. The DOE’s estimate that most homes are under-insulated means your attic is probably due for an upgrade.
• Mold or a musty smell near the attic hatch. A musty attic smell says moisture is trapped, and trapped moisture means failed ventilation or a roof leak. Mold on sheathing or insulation is a health and structural problem that needs professional attention quickly.
• Pests have been in the attic. Rodents and squirrels nest in insulation, chew wiring, and leave waste behind. If you’ve seen droppings or heard scurrying overhead, the contaminated insulation needs to come out and the entry points sealed.

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 gets your situation on our schedule.
2. 2
   On-site inspection and written quote. A background-checked technician measures the attic, checks ventilation balance, looks for moisture, and gives you a written price before any work starts. That number doesn’t change at the door.
3. 3
   Prep and containment. We seal the work area, protect your floors, and set up dust containment so the mess stays in the attic and out of your home.
4. 4
   Installation or removal, done right. The crew does the work, whether it’s blown-in insulation, spray foam, radiant barrier, ventilation correction, or full removal and replacement. We use the materials that fit your home, and we clean up before we leave.
5. 5
   Written guarantee and follow-up. Every job gets a written guarantee, included, for 365 days. If anything isn’t done right within that year, we come back and make it right at no charge. That’s the 365-Day Done Right Promise, and it’s not optional.

How Much Does Attic 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, which means the crew that shows up at your door is part of your community, not a corporate dispatch from somewhere else. Wherever you are, the standard is the same: written price before work starts, a committed arrival window, a clean job site, and a written guarantee on every job. We’ll connect you to the Woolsey team nearest you when you call.

Frequently Asked Questions About Attic Insulation

Schedule Your Attic Insulation Service Today

If your attic insulation is thin, settled, or missing entirely, 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’ll 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’s the only way we’ve done it since 2002, and it’s the only way we will. Call today.

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