Demilec Blown In Insulation in Austin: What to Know First
We provide independent Demilec blown in insulation service across Austin, usually same-week and often same-day for empty attics. Most Demilec blown-in jobs run between $1,200 and $2,800 depending on square footage, depth, and whether we’re topping off existing insulation or starting clean. You’ll get a written price before any work starts.
This page is for Austin homeowners who already have Demilec spray foam or Demilec open-cell foam and need blown-in fiberglass or cellulose layered on top, or who want Demilec’s Heatlok HFO or Sealection 500 systems paired with blown-in coverage. If you’re not sure what’s in your attic now, call (325) 246-2929 and we’ll figure it out.
How Demilec Products Fail – and How We Fix Them
Demilec makes solid foam products. But every brand has failure points, and in Austin’s heat and humidity cycle, we see the same ones repeat. Here’s what actually goes wrong and how we correct it:
- Sealection 500 open-cell shrinkage at the roofline. Open-cell foam can pull away from decking as it cures in high attic heat, leaving hairline gaps where conditioned air escapes. We inspect the full roofline before quoting blown-in work, then seal those gaps with a compatible foam before layering blown-in insulation over the attic floor.
- Heatlok HFO cured too thin in hard-to-reach bays. Spray foam contractors often under-apply in tight corners to save material. The result is an R-value in those spots far below what the label claims. We use an infrared camera to find thin zones, document them, and bring them up to spec before adding blown-in coverage.
- Open-cell foam absorbing Austin humidity. Demilec open-cell can hold moisture in our wet springs and muggy summers if the attic isn’t ventilated properly. That trapped moisture breaks down the foam over time and invites mold. We check ventilation first, because adding blown-in insulation on top of a wet attic makes the problem worse and hides it from view.
- Air leakage around can lights and ceiling penetrations. Demilec foams seal the roof deck, but if the attic floor isn’t sealed around fixtures, you’re still losing conditioned air into the attic. Before blowing in insulation, we seal those penetrations with Demilec-compatible foam or caulk. It’s the difference between an attic that holds temperature and one that doesn’t.
- Old Demilec foam that’s outlived its useful life. Foam installed 15-plus years ago may be crumbling, discolored, or pulling away from framing. Blown-in insulation can’t fix dead foam. We’ll tell you straight if the Demilec layer needs removal or encapsulation before we add new material, and we’ll show you photos so you can see exactly what we’re seeing.
Our Demilec Blown In Insulation Process
Here’s how a Demilec blown-in insulation job goes at an Austin home, from first call to final walkthrough:
- 1
Call and schedule. A live person answers. We ask about your attic access, square footage, and whether you know what insulation is already up there.
- 2
Attic inspection with photos. We document your Demilec foam condition, measure depth, check ventilation, and look for moisture or pest damage. You see the photos before any work is quoted.
- 3
Written price. We hand you a price in writing that covers the full job: materials, labor, sealing, cleanup. No “we found something” surprise on the back end.
- 4
The blow-in work. We install blown-in fiberglass or cellulose to the R-value your attic needs for Austin’s climate, typically R-38 to R-49. If Demilec foam needs sealing or repair first, that happens before the blower ever starts.
- 5
Verification. We measure final depth at multiple points, check for voids, and walk you through what was done.
- 6
365-Day Done Right Promise. The job is covered in writing for a full year. If something’s not right, we return and fix it free.
What Demilec Blown In Insulation Costs in Austin
Dollar ranges depend on attic size, current insulation condition, and how much prep the Demilec foam needs. Here’s where most Austin jobs land:
- Attic inspection with thermal scan: $0 with a booked job, $149 standalone
- Blown-in fiberglass only, 1,200 sq ft to R-38: $1,200 – $1,800
- Blown-in cellulose only, 1,200 sq ft to R-38: $1,400 – $2,100
- Sealing gaps around can lights and penetrations: $8 – $15 per penetration
- Demilec foam repair before blow-in (small gaps and thin spots): $200 – $600 depending on scope
- Full attic air-seal plus blown-in insulation, 1,400 sq ft: $2,200 – $2,800
Two things move the price most: how much air-sealing your attic needs and whether existing Demilec foam is intact. If it’s in good shape, you’re looking at straightforward blow-in work. If it’s not, that gets fixed first. Call (325) 246-2929 for an exact written estimate. Free, every time.
Why Austin Homeowners Call Aspen Attic Insulation Austin for Demilec Work
We don’t send a stranger to your door. Before any visit, you get the technician’s name and photo by text or email. They arrive in a marked uniform and show a photo ID badge at the door. If anyone else shows up, the visit is free and we make it right. That’s the Threshold Standard, and it’s how every Aspen Attic Insulation Austin tech operates.
We stock eight material brands, including Demilec and Reflectix, so the product going into your attic matches the job, not just whatever’s on the truck. Garrett Sloane and his crew have been working in Austin attics for years, from Allandale ranch houses to new construction near the Domain. They know what our summers do to insulation that isn’t right. If your attic’s working against you, your AC never wins.
FAQs
Can you service my Demilec insulation even though you’re not a Demilec dealer?
Yes. As an independent Demilec service provider, we install, repair, and work alongside Demilec products, but we’re not authorized by or affiliated with Demilec, so any manufacturer warranty questions go directly to Demilec. Our own 365-day written guarantee covers every job we do.
How much does Demilec blown in insulation cost in Austin?
Most Demilec blown in insulation jobs in Austin run $1,200 to $2,800 depending on attic size, target R-value, and prep work. Call (325) 246-2929 for a written quote. Estimates are free and the price we quote is the price you pay.
Is it cheaper to repair my Demilec foam or just blow in new insulation over it?
Blown-in insulation can’t fix failing Demilec foam. If the foam is thin, cracked, or pulling away, it needs repair first. If the foam is intact, blowing in insulation on top is almost always cheaper than removing and re-spraying, and it adds R-value fast.
How fast can you get to an Austin Demilec job?
Most blown-in insulation jobs are scheduled within a week, and empty attics can often get done same-day or next-day. Call (325) 246-2929 and we’ll give you a real window, not a callback promise.
Do you use Demilec brand blown-in insulation or something else?
We use blown-in fiberglass and cellulose from brands we stock, and we pair it with Demilec foam systems where that’s what your attic already has or what the job calls for. The right material for the job goes in, not just whatever’s available.
Written by Garrett Sloane, Owner, Aspen Attic Insulation Austin at Aspen Attic Insulation Austin, serving Austin and nearby areas.