How Aspen Attic Insulation Was Born
We started Aspen Attic Insulation in 2002, and the reason is honestly pretty simple: we kept seeing homeowners get burned. Garrett Sloane was working alongside other tradespeople back then, walking through attics across California, and the pattern was everywhere. One house would have a perfectly good insulation job, honest work with the right depth and clean installation. The next house, two streets over, would be a mess. Blown-in fiberglass barely covering the joists. Baffles missing. Gaps around recessed lights. And the homeowner had paid the same price, sometimes more, for the bad job as the good one.
What bothered Garrett wasn’t just the sloppy work. It was that nobody explained anything. People didn’t know what R-value they were paying for, or why their upstairs bedroom was ten degrees hotter than the living room, or whether the crew in their attic was even qualified to be there. The industry treated insulation like a commodity you dumped in and forgot about. Garrett saw it differently: this is the layer that keeps a family comfortable every single day, and the person selling it should act like that matters.
So he started something with a different promise. Written pricing before any work begins. A real explanation of what we’re installing and why. And a named technician whose face you see before they ever walk through your door. That was the promise in 2002, and it’s still the promise at every Aspen Attic Insulation location today.
Garrett Sloane’s Personal Connection to the Insulation Trade
Garrett didn’t grow up dreaming about fiberglass. Nobody does. What he did grow up with was a house that never felt warm in winter. He remembers sitting in the living room with a blanket wrapped around his shoulders on cold evenings, the heater running constantly, and still feeling a draft curl across the floor. His parents argued about the power bill every month. The house was older, the walls were thin, and nobody ever talked about what was above the ceiling. The attic was just a dark space you didn’t think about.
Years later, when he first climbed into an attic as part of a crew, the memory hit him. He looked around at the old, settled insulation, matted down to nearly nothing in places, and he thought: this is why that house was always cold. This right here. Nobody had ever gone up there. Nobody had explained to his parents that heat rises and escapes through the ceiling first. A few inches of proper insulation would have changed their winters.
That’s what got him into this work and what’s kept him here for over two decades. The first time he helped re-insulate an older home on a hot July afternoon, he got up into the attic and felt that specific wave of heat that catches you in the chest the moment you lift the hatch. It smelled like old wood and dust and sun-baked shingles. By the time the crew finished, the difference was immediate. The homeowner came up the ladder, stuck her head through the opening, and just said “oh wow.” That’s the part that sticks with him. Not the technical side, not the product brand, but the moment someone feels their home change for the better.
If Garrett weren’t running Aspen Attic Insulation, he’d probably still be doing this in some form. Teaching it. Writing about it. Sitting across from homeowners and explaining why their second floor is sweltering and what to do about it. He genuinely likes the education part. When a customer asks what R-value means, he doesn’t recite a textbook answer. He explains that it’s a measure of how well the material resists heat moving through it, and that higher numbers mean better resistance, and that most attics in this part of California should have a specific range based on the climate. Then he shows them what they actually have and what it would take to get there. Ten minutes of conversation, and people feel equipped to make a smart decision instead of guessing.
That’s the work. It’s not glamorous. But it matters in a way that makes it easy to get out of bed in the morning.
Meet Garrett Sloane – The Person Behind Every Job
Garrett Sloane is the Owner & Founder of Aspen Attic Insulation, a brand built under the Threshold Group family of home service companies. His background is in the trades, with over two decades of hands-on experience in insulation, air sealing, and attic health. He’s been trained across the major product lines we install, including GreenFiber, Owens Corning, and Johns Manville, and he knows the difference between a job that looks good from the ladder and a job that actually performs.
What sets Garrett apart from a franchise technician following a script is that he designed the standard, not just follows it. Every requirement in the Threshold Standard, from the background check to the photo ID badge to the written price, exists because Garrett insisted on it. He’s not managing from a distance. He’s the person who wrote the rules.
Outside of work, Garrett is particular about details in a way that would surprise no one who’s seen him examine an attic. He’s the kind of person who notices when something is slightly off and can’t let it go until it’s right. That’s not a flaw. It’s why our customers sleep better at night. His personal commitment is straightforward: every homeowner who calls Aspen Attic Insulation deserves to know exactly who is coming, exactly what it will cost, and exactly what they’re getting. He built the company so that would never be in doubt.
Our Promise to Homeowners
We hold every Aspen Attic Insulation location to the Threshold Standard. It’s not a slogan. It’s a list of requirements that every independent owner agrees to before they can operate under our name.
Every technician who arrives at your home has been background-checked and identity-verified. We send that technician’s name and photo before the visit, so you know who to expect. They show a photo ID badge at the door, every time. They arrive in a clean, marked uniform. And the price is always in writing before any work starts.
Our guarantee is the part we’re most proud of: if anyone arrives who you were not told to expect, that visit is on us and we make it right. That’s the promise. It exists because we know what it feels like to open your door to a stranger, and we don’t think anyone should have to guess whether the person on the other side is who they say they are.
Our Credentials
Every pro working under the Aspen Attic Insulation name is required to hold the license and insurance their state requires. That’s a non-negotiable condition of being part of our network, and it means you’re never relying on a verbal promise about credentials that hasn’t been checked.
Each location is also required to maintain insured & bonded status for the protection of every homeowner we serve.
Our experience is measured in decades, not seasons. Garrett founded the company in 2002, and the techniques and standards we use today have been developed and refined through more than twenty years of real attic work across California and our other markets.
Our reputation is built the old-fashioned way: one home at a time, with written pricing and technicians who are accountable to the Threshold Standard.
Here’s why that matters when you’re hiring someone to work inside your home. A license means the person has met the state’s minimum requirements to do the work legally. Insurance and bonding mean you’re protected if something goes wrong. And a reputation means other homeowners have trusted us before and been glad they did. You should never have to wonder about any of those things after the technician has already arrived.
Rooted in the Communities We Serve
Aspen Attic Insulation was founded in California, and our roots there run deep. Our locations serve homeowners from Los Angeles and Long Beach up through Oakland and San Francisco, and across the state into San Diego, San Jose, Fresno, Anaheim, Riverside, Irvine, Santa Ana, and Chula Vista.
We’re not pretending to be from every town we serve. Each location is an independent local business that agreed to work to the Threshold Verified standard. That means the team nearest you knows their city’s housing stock, climate, and building codes, because they live there. And they’re backed by a national standard that holds everyone to the same high bar, no matter where the job is. When you call us, a live coordinator connects you with the location that covers your address. You get local knowledge and national accountability in the same visit.
Written by Garrett Sloane, Owner & Founder at Aspen Attic Insulation, serving California homeowners since 2002.