Demilec Home Energy Audit in Buena Park: What to Know First
We provide independent Demilec home energy audit in Buena Park for homeowners who want to know whether their Demilec spray foam or air-barrier system is performing as specified, not just whether it looks intact. Most audits are scheduled within 48 hours and completed in two to three hours on site; you’ll receive a written scope and price before any diagnostic work begins, with no obligation to proceed. This page is for Demilec owners in Buena Park, Fullerton, and the surrounding neighborhoods who’ve noticed uneven temperatures, rising utility bills, or suspect their original installer skipped the air-sealing step. Call us at (562) 418-5767 to schedule.
How Demilec Products Fail - and How We Fix Them
- Demilec Sealection 500 open-cell foam shrinkage in conditioned attics. In Buena Park’s dry summer heat, we’ve measured Sealection 500 pulling away from rafter bays by 1/4 to 1/2 inch, creating thermal bypass channels that bypass the foam entirely. Our fix: thermal imaging to map every gap, then targeted injection of compatible low-expansion foam followed by a blower-door test to confirm the envelope is resealed.
- Demilec Heatlok HFO High Lift closed-cell overspray on ductwork. The high-lift chemistry can encapsulate flex ducts too aggressively, restricting airflow and forcing HVAC systems to work harder. We see this most in 2018-2021 Buena Park builds where speed was prioritized over masking. Our fix: surgical removal of foam from duct surfaces using controlled abrasion, then resealing with mastic and mesh where the original vapor barrier was compromised.
- Demilec Heatlok XT adhesive failure on steel studs. The XT formulation can delaminate from galvanized steel in garage-to-conditioned-space walls, particularly where Buena Park’s morning marine layer keeps surfaces cool during application. Our fix: removal of failed sections, proper surface prep with compatible primer, and reapplication with documented mil-thickness readings.
- Sealection Agribalance off-gassing in tight envelopes. The bio-based content can emit residual odors for months if the foam was installed too thick in a single pass, trapping exotherm. We’ve traced this in several Buena Park townhomes built during the 2019-2021 construction rush. Our fix: core sampling to verify cure depth, then ventilated correction or selective removal depending on VOC readings.
- Demilec air-barrier membranes compromised by rodent activity. Demilec’s fluid-applied membranes in crawl spaces and rim joists attract no attention until rats from the Coyote Creek corridor chew through. Our fix: removal of contaminated membrane, rodent proofing with galvanized hardware cloth, and reapplication with photo-documented coverage rates.
Our Demilec Home Energy Audit Process

- 1
Call and scheduling. A live person answers. We book a two-to-three-hour window and text you when the technician is en route.
- 2
Blower-door test first. We pressurize the house to 50 pascals and record CFM50 and ACH50 baseline numbers. This tells us, in one figure, how much conditioned air your Buena Park home is hemorrhaging before we open a wall.
- 3
Thermal imaging and targeted inspection. Our FLIR camera maps temperature anomalies across Demilec foam surfaces, duct runs, and top plates. We core-sample suspicious foam where delamination or incomplete cure is suspected.
- 4
Written scope and price. Under Haven Standard Clause 1, you get a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions.
- 5
Air sealing before any insulation touch. Seal the leaks first. Then insulate. The numbers on the report will tell you whether it worked. We seal top plates, can lights, and penetrations with compatible materials.
- 6
Post-work blower-door and documentation. We run the door again, print your before-and-after ACH50 comparison, and deliver a Documented Photo Record of all work areas. The 365-Day Done Right Promise attaches automatically.
What Demilec Home Energy Audit Costs in Buena Park
Most Demilec home energy audits in Buena Park run between $280 and $520 for a single-family home under 2,500 square feet. What moves the price:
- Accessibility of attic and crawl space (steep-pitch roofs in the older neighborhoods near Beach Boulevard add time)
- Number of thermal anomalies requiring detailed mapping
- Whether core sampling or material testing is needed
- Duct leakage testing as an add-on ($150-$220)
We also provide a Free Second Opinion on any written estimate you’ve already received. Bring us a competing quote and we’ll read it with you. Every audit price is flat and written before work starts.
Why Buena Park Homeowners Call Topside Attic Insulation Buena Park for Demilec Work

We’re an independent Demilec service provider, not a factory-authorized dealer, which means we work on what the house actually needs rather than what a brand program dictates. Our technicians are background-checked, uniformed, and trained in building science at programs like the one Wes Okafor completed at Richard J. Daley College in Chicago. We also service Reflectix and other major brands, so if your audit reveals that a non-Demilec solution makes more sense, we can execute it without a second contractor. Calls are answered by a live person 24/7. The 365-Day Done Right Promise applies to all completed work, and every job closes with a Documented Photo Record and printed blower-door numbers.
FAQs
No. Demilec’s product warranty covers material defects, not diagnostic work performed by independent contractors. We document our methods and use Demilec-compatible materials for any touch-ups, so your coverage remains intact. If you’re unsure about your specific warranty terms, call us at (562) 418-5767 and we’ll review them with you before scheduling.
Most Buena Park appointments are available within 48 hours, and same-day service is often possible for suspected air-quality concerns. We text you when the technician is en route and arrive in the scheduled window. Call (562) 418-5767 to check today’s availability.
Repair is viable when the failure is localized, the remaining foam is fully cured, and the substrate is sound. Removal and replacement makes sense when shrinkage or off-gassing is widespread, or when the original installation skipped critical prep steps. Your audit report will specify which path applies to your home, with line-item pricing for both. Estimates are free.
We carry compatible sealants, adhesives, and touch-up foams for common Demilec repairs, but we do not stock full kit replacements. Most same-day repairs are possible for localized issues; larger reapplication jobs are scheduled once the scope is written and approved. We’ll tell you exactly what’s in stock when we call to confirm your appointment.
The blower-door number tells the story. A well-sealed Buena Park home of 2,000 square feet should test below 5.0 ACH50; we’ve audited homes that tested at 8.0 or higher despite visible foam coverage. Our audit measures what you can’t see: thermal bypasses, incomplete cure depths, and missed penetrations. Call (562) 418-5767 for an exact quote on your audit.
Ready to know what your Demilec installation is actually doing? Call (562) 418-5767 today. We’ll schedule your Buena Park home energy audit, deliver a written price before any work starts, and leave you with documented numbers that show whether your envelope is sealed or just decorated.
Written by Wes Okafor, Owner, Topside Attic Insulation Buena Park at Topside Attic Insulation Buena Park, serving Buena Park and nearby areas.