Demilec Home Energy Audit in Westminster: What to Know First
As an independent Demilec service provider, we perform home energy audits on Demilec-insulated homes throughout Westminster, typically scheduling within 48 hours and delivering a written price before any testing begins. Most audits run 2-3 hours and include blower-door testing, thermal imaging, and a documented photo record of what we find. We do not start work without a written scope and flat price - that’s Haven Standard Clause 1, and it’s how we’ve operated since 2016.
This page is for Westminster homeowners whose homes were insulated with Demilec open-cell or closed-cell spray foam, or who are considering Demilec for a retrofit and need baseline performance data before spending. If your energy bills have climbed, rooms feel uneven, or you’re preparing to sell and need documented envelope performance, call (562) 526-6978. Estimates are free, and we answer live 24/7.
How Demilec Products Fail - and How We Fix Them
- Demilec SEALECTION 500 open-cell shrinkage in Westminster attics. The hot, dry Santa Ana cycles pull moisture from open-cell foam faster than in coastal zones, causing visible shrinkage at stud bays and top plates by year 5-7. We measure the gap with feeler gauges, seal with Demilec-compatible two-part foam, then re-test with the blower door to confirm the bypass is closed.
- HEATLOK Soya HFO closed-cell delamination from OSB roof sheathing. The high lift chemistry can release from plywood or OSB when installed over 85°F substrate - common in Westminster attics during August installs. We cut away delaminated sections, re-prep the surface per Demilec’s temperature and moisture spec, and re-foam only after confirming substrate conditions with a pinless moisture meter.
- Demilec open-cell dusting and air leakage at electrical penetrations. SEALECTION AgriBalance and similar low-density foams don’t rigidly seal around romex or conduit movement; thermal imaging shows hot spots at outlets and switch boxes on exterior walls. We pull back foam at penetration points, seal with acoustic sealant and backer rod, then verify with blower-door-directed infrared.
- HEATLOK XT closed-cell thermal drift in unvented cathedral ceilings. The HFO blowing agent can settle 10-15% in R-value over the first two years if the mix was off-ratio during install - something we catch with core sampling and in-situ thermal imaging comparison. When drift exceeds 8%, we overlay with a targeted layer of new closed-cell or recommend selective removal depending on access.
- Demilec retrofit jobs over unsealed top plates in Westminster’s 1960s-1980s tract housing. Many homes near Westminster Mall and the Little Saigon corridor got Demilec sprayed directly over original R-19 batts with no air sealing of partition walls. The foam sits on the attic floor while conditioned air escapes into joist cavities. We remove or work around the Demilec, seal top plates and penetrations with two-part foam, then restore or upgrade insulation with documented before-and-after CFM50 readings.
Our Demilec Home Energy Audit Process
- 1
Call and scope. A live person answers, schedules a 2-3 hour window, and sends a text with your technician’s name when they’re en route - Haven Standard: Arrive on schedule.
- 2
Visual and thermal survey. We walk the attic and living space with a FLIR T540, looking for Demilec-specific patterns: shrinkage gaps, delamination lines, and the telltale rectangular hot spots that mean open-cell bypass at top plates.
- 3
Blower-door test. We run a pressurization reading to establish CFM50 baseline - the single number that shows how much air your envelope is losing. For Demilec homes, we pay special attention to the “house-to-attic” zone; if the number is high despite spray foam, the bypasses are winning.
- 4
Written price before any work starts. If repairs are needed, you get a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions.
- 5
Repairs with documented photo record. We seal, foam, or remove as scoped, photographing every stage. Applicable jobs get a second blower-door test showing CFM50 reduction.
- 6
365-Day Done Right Promise closeout. You receive the photo record, any blower-door numbers, and our written warranty. If it’s not done right, we make it right.
Before
AfterWhat Demilec Home Energy Audit Costs in Westminster
Most Demilec home energy audits in Westminster run $280-$490 for a single-family home under 2,500 square feet. What moves the price:
- Audit scope: Blower-door + thermal imaging only, or add duct-blaster testing ($150-$220 additional) for homes with HVAC in the attic.
- Accessibility: Vaulted ceilings, tight crawl spaces, or multiple attic hatches add time.
- Core sampling: If we need to pull Demilec samples for density or R-value verification, add $85-$140 per location.
- Same-day scheduling: Available at no premium - we don’t manufacture urgency.
If the audit reveals needed repairs, we apply the full audit cost toward the work. Call (562) 526-6978 for an exact quote - estimates are free, and the written price comes before any testing starts.
Why Westminster Homeowners Call Topside Attic Insulation Westminster for Demilec Work
We’ve sealed and insulated over 9,000 homes since 2016, and a significant share of our Westminster jobs have involved Demilec foam - mostly SEALECTION and HEATLOK lines installed during the 2012-2019 retrofit boom. Wes Okafor, our owner and lead technician, still keeps his original blower-door test sheets from Kennedy-King College’s weatherization program in a binder on his truck. His position hasn’t changed: seal the bypasses first. The R-value on the bag is only real if the air has nowhere else to go.
We also service Reflectix and other major brands, so if your audit reveals that Demilec isn’t the right solution for a specific zone, we won’t force it. Every job gets the 365-Day Done Right Promise, a Documented Photo Record, and before-and-after blower-door numbers on applicable work. Calls are answered live 24/7 - no voicemail loops, no callback windows measured in business days.
FAQs
No. An independent audit by a qualified technician does not void Demilec’s material warranty, though repairs by non-certified applicators may affect coverage for future claims on those specific areas. We document our findings and methods so you have a clear record if warranty questions arise later. Call (562) 526-6978 to schedule - estimates are free.
We use OEM Demilec products for continuity repairs where the existing foam must tie in seamlessly - same chemistry, same expansion rate, same long-term behavior. For air-sealing bypasses or topping off where full compatibility matters less, we may use quality third-party two-part foams that meet the same density and closed-cell content specs. We tell you which before any work starts, in writing.
Removal is usually only necessary when foam is delaminated from sheathing, chemically degraded, or blocking critical ventilation paths. Shrinkage gaps, minor dusting, and top-plate bypasses are repairable in place. Our audit gives you the blower-door number and thermal images to make that decision with real data, not pressure. Call (562) 526-6978 for a free estimate.
We typically schedule within 48 hours, and same-day is often available. The audit itself takes 2-3 hours for most single-family homes; you get preliminary findings before we leave, and the written report with photo record within 24 hours. Live scheduling is available at (562) 526-6978.
Yes. We service both brands and understand how they interact in mixed assemblies. Reflectix radiant barriers perform differently when paired with open-cell Demilec versus closed-cell, and our thermal imaging protocol accounts for those combinations. We also evaluate whether the Reflectix is properly sealed at edges - a common failure point in Westminster’s older ranches near Bolsa Chica Road.
Ready to know what your Demilec insulation is actually doing? Call (562) 526-6978 today. We’ll answer live, schedule your audit, and give you a written price before any work starts - guaranteed.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Westminster at Topside Attic Insulation Westminster, serving Westminster and nearby areas.