Demilec Home Energy Audit Nationwide | Walt’s Insulation

Demilec Home Energy Audit in Mission Viejo: What to Know First

A Demilec home energy audit in Mission Viejo typically runs $250 to $450 for a full diagnostic that includes a blower door test, thermal imaging, and a duct leakage assessment. We’re an independent Demilec service provider, not a factory affiliate, which means we diagnose what’s actually happening in your home without a sales script attached. Most audits take two to three hours on site, and you’ll have a written report in hand before we leave the driveway.

Call (949) 528-8707

This page is for Mission Viejo homeowners who had Demilec spray foam installed and are now wondering if it’s performing the way it should. Maybe your utility bills crept up. Maybe one room stays hot all summer. Maybe you bought a house near Lake Mission Viejo and the previous owner left you a binder full of receipts but no idea how the insulation’s holding up. That’s exactly what we sort out. Call (949) 528-8707 and a real person answers, day or night.

How Demilec Products Fail - and How We Fix Them

• Heatlok HFO shrinkage at the roofline. Demilec’s Heatlok HFO is a solid closed-cell product, but in Mission Viejo’s summer heat cycles, we’ve seen it pull slightly away from rafters in older applications where the substrate wasn’t prepped right. The symptom is a room that won’t hold temperature no matter what the thermostat says. Our fix during an energy audit is identifying the separation with thermal imaging, then recommending targeted reapplication rather than a full tear-out.
• Sealection 500 open-cell moisture retention. Open-cell foam like Sealection 500 does its job until a roof leak saturates it. South of Lake Mission Viejo, where homes sit close together and roof runoff gets channeled in odd ways, we’ve found saturated open-cell foam that homeowners couldn’t see because it was hidden behind drywall. A moisture meter check is part of every audit we do on Demilec open-cell homes.
• Heatlok Soy 200 thermal drift in direct sun exposure. Demilec’s soy-based line performs well, but we’ve documented cases in Mission Viejo attics with unshaded south-facing rooflines where older batches showed reduced R-value over a decade of heat soak. The audit catches this with before-and-after thermal readings, not guesses.
• Gaps at electrical and plumbing penetrations. This isn’t a Demilec defect so much as an installation reality. Foam around can lights, vent stacks, and bathroom fans gets disturbed when other trades do work later. We find these during blower door testing and seal them with compatible polyurethane foam that won’t compromise the original Demilec barrier.
• Undersprayed rim joists in two-story Mission Viejo builds. We see this regularly in homes built in the 1990s and early 2000s up by Oso Creek. The original installer hit the easy areas but skimped on the rim joist, which is where a disproportionate amount of air leakage happens. Our audit isolates rim joist leakage with a smoke pencil test, then we quote the fix separately so you know exactly what you’re paying for.

Our Demilec Home Energy Audit Process

Here’s how a typical Demilec audit works when you call Walt’s Insulation:

1. 1
   Call and schedule. A live person answers, gets your address in Mission Viejo, and asks a few questions about the home’s age and what you’ve noticed. We suggest a two to three hour window that works for you.
2. 2
   Walkthrough and visual inspection. Our technician arrives in uniform, does a room-by-room check, and looks at exposed foam areas in the attic or crawl space. We’re checking for obvious separation, discoloration, or water intrusion before any equipment gets set up.
3. 3
   Blower door test. We depressurize the house and measure exactly how much air leaks in. This gives us a baseline number in CFM that we compare against what a Mission Viejo home of your size and age should be hitting.
4. 4
   Thermal imaging and duct testing. The infrared camera finds air leaks and missing insulation that you can’t see from the outside. If your home has ductwork, we run a duct leakage test too because even the best Demilec foam won’t help if your ducts are dumping conditioned air into the attic.
5. 5
   Findings and recommendations. We sit down with you and walk through what we found, what it’s costing you, and what’s worth fixing now versus what can wait. If the original Demilec foam is mostly fine, we’ll tell you that outright.
6. 6
   Written report. You get a report with photos, measurements, and prioritized recommendations. No hard sell. If you want us to do the work, it’s covered by our lifetime Done Right Promise. If not, you still have a clear picture of your home’s performance.

What Demilec Home Energy Audit Costs in Mission Viejo

The audit itself is straightforward to price. Here’s what we charge in Mission Viejo:

• Full diagnostic audit (blower door, thermal imaging, duct leakage, moisture check): $250 to $450 depending on home size and number of stories.
• Thermal imaging only (targeted concern, single area): $95 to $150.
• Blower door test only: $150 to $200.
• Duct leakage test only: $120 to $180.
• Re-sealing minor penetrations found during the audit (typical Mission Viejo attic, 3-6 areas): $180 to $350 total, depending on access.
• Targeted Demilec foam repair (small separation or shrinkage areas): $300 to $700 depending on square footage and depth required.

The main variables are home size, attic accessibility, and whether you have multiple systems to test. Older Mission Viejo homes with low-slope roofs and tight attic access take longer. We never charge a trip fee inside Orange County, and every quote is upfront before any work starts. Call (949) 528-8707 and we’ll give you a firm number over the phone.

Why Mission Viejo Homeowners Call Walt’s Insulation for Demilec Work

We’ve been doing insulation and energy work in Mission Viejo since 2000, and a fair share of what we walk into is fixing or evaluating someone else’s spray foam job. That’s fine with us. We’re locally owned and owner-operated, which means the person you talk to on the phone is the same person who can walk your attic and explain what’s going on. No franchise dispatcher, no rotating subcontractor list.

Walt Brenner started this business after years on job sites across Orange County, and he’s been straight with Mission Viejo homeowners ever since. If your Demilec foam is fine, we’ll tell you it’s fine and you’ll pay for the audit and nothing else. If it’s not fine, we’ll show you the thermal images, explain the fix, and give you a written number. Every repair we do carries our lifetime Done Right Promise. If it’s not done right, we make it right. No runaround, no fine print. And if you’re weighing a Demilec repair against starting fresh with another brand, we work with Owens Corning, Rockwool, Icynene, Johns Manville, CertainTeed, Knauf, and GreenFiber too, plus Reflectix for radiant barrier work. You get an honest comparison, not a brand pitch.

We answer the phone live. Always have.

Frequently Asked Questions About Demilec Home Energy Audits in Mission Viejo