Demilec Home Energy Audit in Pasadena: What to Know First
We provide independent Demilec home energy audit in Pasadena for homeowners who want documented evidence of where their conditioned air is escaping, not a sales pitch wrapped in technical language. Most audits are scheduled within 48 hours and completed in 2 to 3 hours; you receive a written scope and flat price before any work starts, per Haven Standard Clause 1. This page is for Demilec owners in Pasadena who have noticed uneven temperatures, rising utility bills, or suspect their spray foam or sealant application isn’t performing as specified. Call (213) 816-5351 to schedule - a live person answers, 24/7.
How Demilec Products Fail - and How We Fix Them
- Demilec SEALECTION 500 open-cell spray foam shrinkage in Pasadena’s dry heat. The arid climate east of the San Gabriel Mountains accelerates dimensional change in open-cell formulations installed before 2018. We see this in attics near the Rose Bowl foothills where summer attic temperatures exceed 140°F. Our fix: thermal imaging to map the shrinkage gaps, then targeted reapplication with current-spec Demilec open-cell or a hybrid closed-cell approach at transition zones.
- Demilec Heatlok XT closed-cell delamination from OSB roof sheathing. In Pasadena’s older bungalows, especially in Bungalow Heaven and the Madison Heights area, roof decks were often installed with elevated moisture content. When Heatlok XT was applied directly, the bond fails at the foam-wood interface. We remove the delaminated section, allow the substrate to reach equilibrium moisture content, then reapply with a compatible primer - and we document the before-and-after adhesion test with a pull gauge.
- Demilec 500 Demilec air barrier discontinuity at top plates and electrical penetrations. The SEALECTION air barrier system only works as a continuous plane; gaps at the critical junction between wall top plate and roofline are common in Pasadena’s 1920s Craftsmans where balloon framing meets later additions. We pressurize the house with a blower door, locate the leaks with a smoke pencil, then seal with Demilec-compatible sealant or targeted foam before any insulation goes over it.
- Demilec Agribalance soy-based foam degradation from rodent activity. The organic content in Agribalance makes it attractive to nesting rodents, a recurring issue in Pasadena’s hillside neighborhoods near Eaton Canyon where roof rat pressure is highest. We remove contaminated foam, sanitize the substrate, install rodent-proofing at entry points, then reapply with a current synthetic formulation or switch to Rockwool in accessible cavity areas.
- Demilec Heatlok Soya HFO shrinkage at extreme thicknesses. When installers in Pasadena’s new construction - particularly the condos along Colorado Boulevard built 2015-2020 - applied this HFO-blown closed-cell foam beyond manufacturer-specified lift thickness, internal stress cracking resulted. We core-sample the foam, measure density and thickness against spec, then either add a properly sequenced second lift or remove and reapply to Demilec’s current HFO guidelines.
Our Demilec Home Energy Audit Process

- 1
Call and schedule. A live person answers at (213) 816-5351, 24/7. We book a 2-hour arrival window and text you when the technician is en route - Haven Standard: Arrive on schedule.
- 2
Blower-door test and thermal imaging. We depressurize the house to 50 Pascals and record the CFM50 reading - a single number showing how much air leaks through your building envelope. Then we scan with a FLIR camera to locate thermal bypasses, paying special attention to Demilec application boundaries where the foam meets framing or other materials.
- 3
Insulation inspection and duct leakage test. We access the attic or crawl space, photograph the Demilec installation condition, and run a duct blaster if your HVAC is in the conditioned envelope. Every photo goes into your Documented Photo Record.
- 4
Written scope and flat price. Before any work starts, you receive a written price, detailed scope, and written warranty - Haven Standard Clause 1. No exceptions. We also offer a Free Second Opinion on any competing written estimate.
- 5
Air sealing first, then insulation. We seal top plates, can lights, and penetrations before adding or replacing any insulation. “Seal the leaks first. Then insulate. The numbers will tell you why.” We run the blower door again to verify the reduction.
- 6
Final documentation and 365-Day Done Right Promise. You receive the before-and-after blower-door numbers, thermal images, and photo record. If anything isn’t right, we make it right - backed in writing.
What Demilec Home Energy Audit Costs in Pasadena
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Standard home energy audit (blower door + thermal imaging + written report) | $350 - $650 | Home size, attic accessibility, number of HVAC zones |
| Audit with duct leakage testing | $550 - $850 | Duct accessibility, number of returns, need for register sealing |
| Demilec-specific failure investigation (core sampling, adhesion testing, moisture readings) | $450 - $750 | Area of suspected failure, need for destructive testing, lab analysis |
| Air sealing after audit (typical Pasadena bungalow, 1,200-2,000 sq ft) | $1,800 - $3,400 | Linear feet of top plate, number of can lights, chimney bypasses |
| Demilec foam remediation and reapplication (localized) | $2,200 - $4,500 | Area, thickness, access difficulty, primer requirements |
Most Pasadena homeowners who call us for a Demilec concern spend between $350 and $850 for the diagnostic phase, then decide on repairs based on the documented findings. We don’t sell - we show you the blower-door numbers, the thermal images, and the written scope, then you decide. Call (213) 816-5351 for an exact quote - estimates are free.
Why Pasadena Homeowners Call Topside Attic Insulation Pasadena for Demilec Work

We’ve been in attics from Bungalow Heaven to the older Craftsmans along Pasadena’s Orange Grove corridor since 2016, and we’ve learned that Demilec products perform well when installed to spec - and fail predictably when they aren’t. We publish before-and-after blower-door numbers on every applicable job, so you see the CFM50 drop in black and white, not in a salesman’s enthusiasm. Our technicians are background-checked and uniformed; they know the difference between SEALECTION 500 and Heatlok XT, and they know why Pasadena’s dry climate and older framing systems matter for each. We also service Reflectix and other brands, so if your audit reveals that a different material suits your assembly better, we’ll say so - no proprietary lock-in. The 365-Day Done Right Promise applies to everything we touch. Under Haven Standard: Have it in writing.
FAQs
No - as an independent Demilec service provider, we use Demilec-compatible materials and follow current manufacturer application guidelines, which preserves warranty coverage where it exists. We document our work with photos and material lot numbers so any future warranty claim has a clear chain of custody. Call (213) 816-5351 if you have specific warranty paperwork you’d like us to review - estimates are free.
Standard Demilec two-component foam kits and sealants ship to our Pasadena warehouse in 3 to 5 business days; specialized HFO-blown formulations or custom-density orders may take 7 to 10 days. We don’t start work until materials are on hand - Haven Standard: No surprises. If your situation is urgent, we’ll tell you honestly whether a temporary air-sealing measure makes sense while we wait. Call (213) 816-5351 to discuss timeline.
Localized Demilec repairs typically run $2,200-$4,500, while full attic remediation and reapplication in a Pasadena home of 1,500-2,500 square feet usually falls between $5,500 and $11,000. We recommend repair when the failure is isolated to less than 20% of the installed area and the surrounding foam tests at specification density and adhesion. If we find systemic installation errors - wrong lift thickness, inadequate substrate prep, or moisture-compromised adhesion - we recommend replacement and show you the core-sample evidence. Call (213) 816-5351 for a written scope and flat price either way.
We schedule most Demilec audits within 48 hours, and same-day service is sometimes available for situations involving active water intrusion or significant air leakage that threatens HVAC equipment. We don’t manufacture urgency - we tell you honestly whether your situation can wait or needs immediate attention. A live person answers at (213) 816-5351 24/7 to triage your call.
We work with Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, GreenFiber, and Reflectix - no proprietary lock-in. If your audit shows that a different material suits your Pasadena home’s specific assembly, climate exposure, or budget better than your existing Demilec installation, we’ll document why and give you a written scope for that alternative. The goal is the lowest blower-door number and the most durable assembly, not a brand preference. Call (213) 816-5351 for a free estimate.
Ready to see what’s actually happening in your building envelope? Call (213) 816-5351 to schedule your Demilec home energy audit in Pasadena. A live person will answer, book your 2-hour arrival window, and send a text when your technician is on the way. You’ll get a written price before any work starts, a Documented Photo Record when the crew leaves, and before-and-after blower-door numbers if air sealing is performed. That’s the Haven Standard - and it’s the only way we work.
Written by Wes Okafor, Owner, Topside Attic Insulation Pasadena at Topside Attic Insulation Pasadena, serving Pasadena and nearby areas.