Frequently Asked Questions
Most attic insulation jobs in Los Angeles run between $1,800 and $5,600, and every Woolsey Attic Insulation job comes with a written price before any work starts. We install and service attic insulation and spray foam insulation only, backed by 365 days of accountability after the job is done. Below are the questions homeowners ask us most, answered straight.
Key Takeaways
- Written price before any work begins, every job, no exceptions.
- 365-Day Done Right Promise: if it’s not right, we come back and fix it at no charge.
- Live person answers the phone 24/7 at (325) 240-5411.
- We work with eight leading insulation brands so the material fits the home.
- Free estimates, background-checked and uniformed technicians on every visit.
Pricing & Estimates
How much does insulation service cost?
Most residential attic insulation jobs run between $1,800 and $5,600, depending on square footage, existing insulation depth, and the material you choose. Blown-in fiberglass and cellulose – the loose material that’s blown through a hose to fill the attic floor evenly – sits at the lower end of that range. Spray foam insulation, a two-part liquid that expands on contact and seals gaps airtight, sits higher because the material costs more and the install takes longer. Crawl space encapsulation and vapor barrier work usually lands between $2,200 and $7,500 depending on whether you need a full liner or just a vapor barrier. Every Woolsey job gets a written price before any work starts, so the number you see on paper is the number you pay. Call (325) 240-5411 and we’ll give you an exact quote for your home.
Do you offer free estimates?
Yes, every estimate is free and there’s no obligation to book after we leave. A technician walks the attic with you (or sends photos), measures square footage, checks existing R-value – the rating that tells you how well a material resists heat flow – and checks for moisture issues, pest damage, or gaps around plumbing stacks and recessed lights. You get a written scope and a written price, usually the same day. No door-step surprises, no price that shifts after the crew shows up. Call (325) 240-5411 to schedule your free estimate.
Is it cheaper to repair or replace attic insulation?
It’s usually cheaper to top off or repair existing insulation than to remove and replace it, as long as the material underneath is dry and not contaminated. If the attic has rodent damage, wet fiberglass, or heavy settling below the minimum R-value, we’ll recommend a full removal and reinstall – that’s a bigger job but it’s the only way to fix the underlying problem. We tell you which one your attic actually needs, in writing, before we touch anything. If you’re not sure which category you’re in, call (325) 240-5411 and we’ll walk you through it.
What’s the difference between blown-in, spray foam, and batt insulation?
Blown-in insulation is loose fiberglass or cellulose blown through a hose, evenly covering the attic floor and filling around obstacles – it’s the go-to for most open attics. Spray foam insulation is a two-part liquid that expands on contact and cures into a rigid, airtight layer – it’s the right pick for rim joists, closed cavities, and attics where air sealing matters as much as R-value. Batt insulation comes in pre-cut rolls and is most often used in walls or where the framing is exposed and regular. We work with Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber, so the material recommendation is based on your home, not on whatever happens to be on the truck. If you want to understand how R-value, air sealing, and material choice come together, our Attic Insulation in Los Angeles page walks through it in detail.
Service & Scheduling
Do you offer emergency insulation service?
We handle urgent insulation calls – a burst pipe soaking attic insulation, a rodent intrusion, a partial collapse of old material, a sudden draft or moisture problem – and because a live person answers the phone 24 hours a day, 7 days a week, you’re never stuck in voicemail. When you call, we triage over the phone and get a technician scheduled as fast as the situation requires. Most urgent calls in the area are handled the same day or next day. If your attic is actively wet or you smell mold, call (325) 240-5411 right away and don’t run your HVAC until we’ve checked it.
How fast can you respond?
For non-urgent jobs, we typically schedule estimates within a couple of days and complete the work within a week or two. For urgent calls, we aim for same-day or next-day dispatch. Because our phones are answered by a live person 24/7, you’ll get a real schedule commitment when you call, not a callback window. Our team works around your schedule – weekday, evening, or weekend appointments are all available.
How long does an attic insulation job take?
Most attic blow-in and top-off jobs finish in a single day – typically 4 to 8 hours for an average home. Spray foam jobs take longer because the foam has to be applied in passes and cure between them; a full attic can run a day and a half to two days. Crawl space encapsulation usually runs one to two days depending on size and conditions. You’ll get a realistic time estimate in writing before we start. If you’d like a better sense of what a job day looks like, start at our home page and we’ll walk you through The Kingswell Way.
What areas do you serve?
Woolsey Attic Insulation serves Los Angeles and the surrounding communities. Our crews are local to the area, which means we understand the specific attic conditions here – hot inland summers, marine-layer moisture near the coast, and the temperature swings that punish under-insulated homes in the Valley. If you’re not sure whether your neighborhood is in our service area, call (325) 240-5411 and we’ll tell you straight.
Licensing, Insurance & Trust
Are you licensed and insured?
Yes, Woolsey Attic Insulation is state-licensed and carries full liability insurance and workers’ compensation coverage on every job. We’re happy to provide proof of insurance before work starts – just ask and we’ll send it over. Every technician who enters your home is background-checked and arrives in uniform, so you know exactly who’s walking through your door. Woolsey was founded in 2002 as part of the Kingswell family of independently owned and operated insulation companies, and our team is led by Glenn Hartley. We are not a national chain or a franchise; each location is independently owned and operated under the Kingswell banner.
Do you guarantee your work?
Yes – every repair and installation is covered by our 365-Day Done Right Promise: if the work isn’t right within 365 days, we come back and fix it at no charge. That’s not a verbal promise, it’s included in writing on every job. On top of that, every Woolsey job carries The Kingswell Guarantee: a written price before work starts, a committed arrival window, a clean job site, and a written guarantee on the work with a free return visit if anything fails within the guarantee period. If you’ve ever paid a contractor who disappeared after the check cleared, this is the part that matters. Call (325) 240-5411 to talk through what the guarantee covers for your specific job.
What payment methods do you accept?
We accept major credit cards, debit cards, checks, and standard financing options. Because your price is written and locked before any work begins, there are no surprise add-ons or “we found something” charges at the end of the job. If you’d like to know what financing looks like for your project, call (325) 240-5411 and we’ll go through your options.
What is the name story behind Woolsey?
Wool was the first insulation – people stuffed it into walls to keep their homes warm long before fiberglass or foam existed. Woolsey keeps the idea in the name. Under that name, the standard we hold ourselves to is simple: say the price, show up in the window, leave it cleaner than we found it, put the guarantee in writing, and come back if it fails. That’s The Kingswell Way, and it’s what our 365-Day Done Right Promise is built on.
Attic Insulation
Do you handle attic insulation?
Yes – attic insulation is our core service and the majority of what we do. We install, top off, remove, and replace blown-in fiberglass and cellulose, spray foam, and batt insulation in attics of every age, from 1920s bungalows to new construction. We also air-seal the attic floor before adding insulation, which is where most of the real performance comes from – sealing gaps around plumbing stacks, recessed lights, and top plates so conditioned air stops leaking into the attic. If your attic is hot in summer, cold in winter, or your energy bill keeps climbing, that’s usually the sign. Call (325) 240-5411 to book a free attic assessment.
How do I know if I need more attic insulation?
If your insulation is below the recommended R-value for your climate zone, has settled to less than the tops of the ceiling joists, or feels damp or compressed, you probably need more. Other signs: rooms that never get comfortable, energy bills that climb year over year, and drafts you can feel along interior walls. In Los Angeles’s climate, we generally aim for R-30 to R-38 in the attic, but the right target depends on your specific home. We’ll check depth, R-value, and air leaks during a free estimate, and you’ll get a written recommendation – not a hard sell.
How long does new attic insulation last?
Blown-in fiberglass and cellulose typically last 20 to 30 years if it stays dry and undisturbed. Spray foam can last the lifetime of the home when properly installed. The main threats are moisture, rodents, and compression from foot traffic or storage – which is why we always recommend against storing boxes on top of your insulation. If your insulation is more than 20 years old and you’ve never had it checked, it’s worth a look.
Can you insulate an attic with existing insulation in place?
Yes – in most homes we can blow new insulation on top of existing material without removing it, as long as the old insulation is dry, clean, and not damaged. This is called a “top-off” or “add-on” and it’s often the fastest, most cost-effective fix. If the existing insulation is wet, contaminated, or heavily compacted, we’ll remove it first, air-seal the attic floor, and install fresh material. We’ll tell you which one your attic needs in writing before we begin.
Spray Foam & Blown-In Insulation
Do you handle spray foam insulation?
Yes, we install spray foam insulation in attics, rim joists, and other sealed cavities, using both open-cell and closed-cell products. Open-cell foam is softer, more affordable, and great for interior attic surfaces where air sealing matters more than high R-value per inch; closed-cell is denser, resists moisture, and delivers more R per inch, which makes it the better pick for rim joists and exterior-adjacent applications. We install Icynene and Demilec spray foam systems. Spray foam is not a DIY material – the chemicals are applied under pressure and the two components have to be mixed correctly on-site, so this is strictly trained-professional work. Call (325) 240-5411 and we’ll recommend the right foam for your attic.
Do you handle blown-in insulation?
Yes – blown-in insulation is one of our most-requested services and usually the fastest, most cost-effective way to bring an attic up to code. We use fiberglass and cellulose products from Owens Corning, Johns Manville, Knauf, and GreenFiber, and we blow them to a measured depth so the resulting R-value matches what’s written on your estimate. Before we blow anything in, we air-seal the attic floor so the new insulation isn’t wasted on leaks. The job is typically done in a few hours and cleanup is included – you won’t find insulation dust in your living space.
How does a blown-in attic insulation job actually work?
Here’s the step-by-step for a typical Woolsey attic job, so you know exactly what to expect:
- Free estimate. A technician inspects the attic, measures square footage, checks existing R-value and moisture, and documents air leaks.
- Written price. You receive a written price and scope before any work starts. No door-step surprises.
- Scheduled arrival window. We commit to a specific window and show up inside it in uniform, in a marked truck.
- Prep and protect. We lay drop cloths and seal off attic access points so no insulation dust reaches your living space.
- Air sealing. We seal gaps around plumbing stacks, recessed lights, and top plates before adding insulation.
- Installation. We blow the material to a measured depth, verify R-value, and mark the depth in the attic.
- Cleanup and walkthrough. We leave the workspace cleaner than we found it and walk the job with you before we go.
- 365-Day Done Right Promise. Every job is backed in writing for 365 days. If anything’s wrong, we come back at no charge.
Crawl Space & Moisture Control
Do you handle crawl space encapsulation & vapor barrier?
Yes – we install crawl space vapor barriers and full encapsulation systems, which use a heavy-duty liner to seal the crawl space floor and walls and keep ground moisture out of the home. An unsealed crawl space is one of the most common reasons attic insulation fails early: moisture wicks up, condenses on the underside of the attic floor, and degrades the material from below. A vapor barrier is the simpler fix; full encapsulation adds wall liners, sealed vents, and often a dehumidifier. Most crawl space jobs run between $2,200 and $7,500 depending on what your space needs. Call (325) 240-5411 for a written quote.
Do you remove old insulation?
Yes – we remove and dispose of damaged, wet, contaminated, or pest-infested insulation before installing new material. Removal is often necessary after rodent activity, a plumbing leak, or a roof leak, because leaving contaminated material in place means the new insulation sits on top of a problem. We handle removal, disposal, and air sealing in one visit, then install fresh product to a measured R-value. If your attic smells musty or you’ve had rodents, call (325) 240-5411 and we’ll assess whether removal is needed.
What’s a vapor barrier and why does it matter?
A vapor barrier is a plastic or foil sheet installed on the warm side of the insulation to stop moisture from moving into the assembly. In a crawl space, that means a heavy-duty liner laid across the ground and up the walls to keep ground moisture out of the home. Without one, humidity migrates up through the floor, condenses on cooler surfaces, and degrades insulation from the bottom up. It’s the difference between a job that lasts 25 years and one that needs replacing in 8.
Working With Woolsey
Who will show up at my house?
Background-checked, uniformed technicians – every job, every time. When we call ahead to confirm your appointment, you’ll know who’s coming and what vehicle to expect. Nobody shows up in an unmarked car asking to “take a quick look at the attic.” That standard is part of The Kingswell Guarantee and applies on every Woolsey job.
What repair problems do you see most often?
The most common issues we find are settled or compressed insulation, missing air sealing around plumbing stacks, rodent tunneling, and moisture damage from crawl spaces or roof leaks. In older homes, we regularly see insulation that was installed decades ago at a lower R-value than the current code calls for – which is why the attic still feels hot even though there’s material up there. The fix is usually straightforward, and it’s outlined in writing before we begin.
Do you work on commercial properties?
Our focus is residential attic and spray foam insulation. For most commercial spaces we refer out to a partner, but if you’re not sure whether your property is a fit, call (325) 240-5411 and we’ll tell you honestly – even if the answer is “that’s not our job, here’s who to call.”
How do I get started?
Call (325) 240-5411. A live person will answer, take your address, and set up a free estimate. From there it’s simple: the estimate, a written price, a scheduled arrival window, and work performed by uniformed, background-checked technicians. If you’d rather start with the basics of how attic insulation works and what The Kingswell Way looks like in practice, visit our home page or read more on our Attic Insulation in Los Angeles service page. Woolsey Attic Insulation was founded in 2002 under Glenn Hartley’s leadership as part of the Kingswell family of independently owned and operated insulation companies – 365 days of accountability on every job, in writing.
Have a question we didn’t cover? Call Woolsey Attic Insulation at (325) 240-5411.