Demilec Wall Insulation in Westminster: What to Know First
As an independent Demilec service provider, Topside Attic Insulation Westminster handles injection foam wall insulation and drill-and-fill retrofits for Demilec products in Westminster homes, typically scheduling within 48 hours and completing most jobs in a single day. We publish a written price before any work starts - no exceptions - and on applicable jobs we document before-and-after blower-door numbers so you can verify the air-sealing result yourself. This page is for Westminster homeowners who already have Demilec insulation in their walls and need to know whether it can be repaired, supplemented, or replaced, and what that actually costs. Call (562) 526-6978 for a free estimate with a written scope.
How Demilec Products Fail - and How We Fix Them
- Heatlok HFO Pro shrinkage in west-facing walls. The high-pressure spray foam can pull away from studs after repeated thermal cycling, especially where Westminster’s afternoon sun loads hit hard. We find 1/4-inch to 1/2-inch gaps at stud bays on west elevations more often than any other orientation. Our fix: remove the compromised foam with specialized extraction tools, reseal the cavity with two-part injection foam matched to the original density, then verify fill with thermal imaging.
- Heatlok Soya settling in tall wall cavities. The semi-rigid formulation in 2×6 walls over 10 feet high sometimes settles 2 to 4 inches at the top of the bay, leaving a conductive gap. This is a known characteristic, not an installation error. We drill at the top plate and inject additional foam to restore continuous coverage, then probe with a borescope to confirm no voids remain.
- Demilec open-cell foam moisture retention in bathrooms. Open-cell products like Heatlok Soya absorb vapor; in Westminster’s older homes with poorly vented bath fans, we’ve found saturated foam behind tile surrounds. The fix isn’t more foam - it’s removal of the water-damaged material, repair of the exhaust path, and replacement with closed-cell injection foam or a hybrid system with a vapor retarder.
- Air leakage at electrical boxes in Demilec-insulated walls. Demilec foam doesn’t self-seal around plastic boxes the way some competing products do. We pull the cover plates, seal the box-to-drywall gap with acoustic sealant, and use a smoke pencil to verify no bypass remains before we call the wall complete.
- Demilec retrofit compatibility with existing batt insulation. Homeowners sometimes call us after a previous contractor drilled and filled over old fiberglass, creating a layered mess with trapped air pockets. We extract the hybrid debris with a vacuum truck, then start clean with a full-cavity injection. Seal the bypasses first. The R-value on the bag is only real if the air has nowhere else to go.
Our Demilec Wall Insulation Process
- 1
Site survey and thermal scan. We walk the Westminster property with a FLIR camera to locate voids, shrinkage, or moisture anomalies in the Demilec insulation. You get a photo record of what we found.
- 2
Blower-door baseline. If the wall work ties into a larger envelope job, we run a pressurization test - a single number showing how much conditioned air the home is losing. On wall-only jobs, we pressure-map the room to locate exfiltration paths.
- 3
Written scope and price. Under Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool. No work starts without it.
- 4
Access and extraction (if needed). We drill 5/8-inch holes at stud-bay centers, or remove siding if exterior access is cleaner for your Demilec product type. Compromised foam comes out; the cavity is brushed clean.
- 5
Injection and verification. We match the replacement foam to the original Demilec density spec, fill to refusal, and verify with borescope or thermal imaging. On applicable jobs, we run a post-work blower-door test and publish both numbers.
- 6
Cleanup and documentation. Holes are plugged with matching material, trim repaired, and you receive a Documented Photo Record plus any blower-door readings before we leave.
Before
AfterWhat Demilec Wall Insulation Costs in Westminster
Most Demilec wall insulation jobs in Westminster homes run between $2,800 and $5,400 for a typical 1,200 to 2,000 square foot house with standard 2×4 or 2×6 construction. Drill-and-fill retrofits on older homes with lath-and-plaster walls trend toward the higher end - the access is slower and the cavity cleanup takes longer. Extraction of failed or moisture-damaged Demilec foam adds $800 to $1,600 depending on wall area and disposal requirements.
What moves the price: wall height (taller cavities need more injection ports), exterior siding type (stucco costs more to patch than vinyl), and whether we’re working around existing Demilec foam or starting from an empty cavity. We also service Reflectix and other brands, so if your walls have mixed materials we’ll price the scope honestly rather than force a single-product solution.
Call (562) 526-6978 for a free estimate - we’ll read your situation with you and give you a written price before any work starts.
Why Westminster Homeowners Call Topside Attic Insulation Westminster for Demilec Work
We’ve been independently owned and operated under The Haven Standard since 2016, and the neighborhoods around Westminster Mall have seen more than a few of our jobs: existing Demilec foam pulled, bypasses around top plates sealed with two-part foam, then new injection fill brought to spec before a final thermal scan is photographed and left with the homeowner. Wes Okafor, our owner and lead technician, still keeps his original blower-door test sheets from Kennedy-King College’s building trades program in a binder on his truck - he doesn’t skip the air-sealing step, and neither do our crews.
The 365-Day Done Right Promise applies to all completed work. Calls are answered by a live person 24/7. Background-checked, uniformed technicians. And we publish before-and-after blower-door numbers on every applicable job so you can see the performance change you paid for, not just take our word for it.
FAQs
No - manufacturer warranties on installed foam cover material defects, not who touches it afterward. As an independent Demilec service provider, we use repair methods that don’t compromise any remaining material warranty. If your Demilec installation is less than 10 years old and shows a factory defect, we’ll document it and point you toward the appropriate claim channel. Call (562) 526-6978 and we’ll review your paperwork with you.
Yes - we stock injection foam matched to Heatlok HFO Pro (2.0 lb/ft³ closed-cell) and Heatlok Soya (0.5 lb/ft³ open-cell) specifications. For walls where the original Demilec product is discontinued, we specify a chemically compatible replacement with equivalent R-value and vapor permeance, noted in your written scope before work starts.
Repair is usually 40 to 60 percent less than full removal and replacement, assuming the existing foam is structurally sound and the voids are accessible. If we find moisture damage or chemical degradation, we’ll show you the borescope footage and price both paths. Free estimates, no obligation - call (562) 526-6978.
Most Demilec wall insulation jobs in Westminster are scheduled within 48 hours of your call, with completion in one day for standard drill-and-fill retrofits. Jobs requiring exterior access or full-cavity extraction may run two days. A live person answers calls 24/7, and you’ll get a text when your technician is en route.
Every job closes with a Documented Photo Record: thermal images, borescope stills or videos, filled-depth measurements, and on applicable work, before-and-after blower-door readings. You also receive a written scope completion checklist and your 365-Day Done Right Promise warranty card. Haven Standard: Have it in writing.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Westminster at Topside Attic Insulation Westminster, serving Westminster and nearby areas.