Demilec Home Energy Audit in West Covina: What to Know First
An independent Demilec home energy audit in West Covina typically costs between $250 and $450 for a full diagnostic, including blower door testing, thermal imaging, and a written report you can use to prioritize repairs. We complete most audits in about two to three hours, and usually have the report to you within 24 hours. We’re not affiliated with Demilec, but we install and service their spray foam products regularly, so we know exactly what to look for.
This page is for West Covina homeowners who have Demilec spray foam insulation (or suspect they do) and want to know if it’s still doing its job. If your energy bills have crept up, or one room feels like a sauna while another won’t warm up, call us at (626) 612-1532. A live person answers, day or night.
How Demilec Products Fail - and How We Fix Them
Demilec spray foam is a solid product when installed right. But after years in West Covina attics, certain things go wrong that we see again and again. Here are the five most common Demilec-related issues we find during home energy audits.
- Heatlok HFO shrinkage at wall-to-ceiling junctions. Demilec’s Heatlok HFO line is closed-cell and should stay put, but when it was applied to a surface that wasn’t prepped right (dust, moisture, or old insulation left in place), it can delaminate at the edges. We find this during thermal imaging scans as cold seams along top plates. The fix usually involves cutting back the loose edge and re-foaming the gap.
- Sealection 500 open-cell saturation in older West Covina ranchers. Open-cell foam like Sealection 500 will absorb water if a roof leak goes unnoticed. In homes along the Eastland Center corridor where roofs date to the 1970s and 80s, we regularly find saturated foam that has lost its R-value. An audit tells you whether you need extraction or just localized repair.
- Improper mixing ratios on original installs. Demilec’s two-part foam requires precise ratio calibration. When a previous contractor’s rig wasn’t dialed in, the foam can cure brittle or stay tacky. We’ve seen Heatlok Soy in West Covina attics that never fully cured and has been off-gassing for years. An audit catches this with a simple tactile check and thermal inconsistency scan.
- UV degradation on exposed foam at attic hatches and knee walls. Demilec foam is not UV stable, and any spot visible to sunlight breaks down into a chalky powder. If your attic hatch or crawl space access has exposed foam, it’s losing integrity. We flag this during every audit and recommend a simple covering fix.
- Pest tunneling through Sealection 500 in crawl spaces. Rats love open-cell foam. In West Covina neighborhoods near the San Gabriel foothills, rodent traffic through crawl spaces can turn Demilec insulation into Swiss cheese. Our audits include a pest-damage assessment so you know whether you’re looking at a foam repair or a larger exclusion job.
Our Demilec Home Energy Audit Process
When we come out for a Demilec home energy audit in West Covina, here’s what happens, start to finish.
- 1
You call. A person picks up. We ask about your home, your bills, and any comfort complaints. No script. We schedule a time that works.
- 2
We walk the house with you. Walt Brenner or one of our senior techs goes room by room, looking at registers, windows, attic access, and any visible insulation. We want you pointing at the spots that bother you.
- 3
Blower door test. We depressurize the house and measure exactly how much air is leaking in. This tells us whether your Demilec foam is failing at the air-seal level, not just the R-value level.
- 4
Thermal imaging inspection. A full scan of walls, ceilings, and the attic shows us where foam has shrunk, saturated, or never cured right. We show you the images on the spot.
- 5
Duct leakage test. If your ducts run through unconditioned space, this tells us how much conditioned air is escaping before it reaches your rooms.
- 6
Written report and walk-through. You get a prioritized list with honest numbers. We’ll tell you if your foam is fine and your ducts are the problem. We’ll also tell you if replacing a section makes more sense than patching it. No upsell. Just what we’d do if it were our house.
What Demilec Home Energy Audit Costs in West Covina
Here’s the straight answer on pricing:
- Full home energy audit (blower door, thermal imaging, duct leakage, written report): $250-$450, depending on square footage and access.
- Thermal imaging only (targeted scan of attic foam or a specific room): $150-$250.
- Blower door test only: $100-$175.
- Demilec foam repair (if we find a problem during the audit): $300-$1,200 for typical localized fixes. Larger remediation goes up from there, and we’ll give you a firm number before any work starts.
What moves the price? House size, attic accessibility, whether the crawl space is clean or a mess, and how many rooms need thermal scanning. We don’t charge a trip fee inside our service county, and we’ll always give you the number before we show up. Call (626) 612-1532 for a free estimate on your specific home.
Why West Covina Homeowners Call Walt’s Insulation for Demilec Work
We’ve been locally owned and owner-operated since 2000, with a published address and a license number you can look up. Walt Brenner grew up in San Antonio and learned the trade at St. Philip’s College before heading west and planting roots in the greater LA area. We’ve been running jobs in West Covina for years, and we know what older construction near the Eastland Center corridor looks like from the inside. The one down the road isn’t a slogan. It’s who we are.
When we send a technician to your house, it’s a background-checked, uniformed employee who knows Demilec products specifically. If your audit turns up a problem we can’t fix with Demilec material, we also carry Reflectix for targeted radiant barrier applications. Every job, every repair, every install is covered by our lifetime Done Right Promise. If it’s not done right, we make it right. No runaround. A live person answers the phone 24/7, and we back that with the same guarantee we’ve stood behind for over 25 years. Good insulation isn’t flashy. It just works - every day, whether you notice it or not.
FAQs
Demilec’s warranty applies to the material itself, but almost every failure we find in West Covina homes is an installation issue, not a manufacturing defect. That means the original installer’s workmanship matters more than the manufacturer’s warranty. As an independent Demilec service provider, we can assess what went wrong and recommend the most cost-effective repair, whether that’s a warranty claim or a localized fix. Call (626) 612-1532 and we’ll help you figure out which path applies.
Most Demilec issues we find during home energy audits in West Covina are repairable without full replacement. Shrinkage at seams, localized saturation, and pest damage can all be addressed surgically. Full extraction is only worth it when the majority of the foam has failed or been contaminated. We’ll give you an honest recommendation based on what the diagnostics show, not on what makes us more money.
Usually within a few days, and same-week appointments are common. If you call (626) 612-1532 early in the week, we can often have a tech out before Friday. Emergency calls get priority.
Always audit first. Replacing Demilec foam in a West Covina home without knowing where the actual problem is means you might spend $15,000 on new insulation when the real issue was a duct leak or an attic hatch that never got sealed. A $250-$450 audit tells you exactly what needs attention. It’s the cheapest money you’ll spend on conditioning your home.
Yes. We install and service Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, and GreenFiber products as well. If your West Covina home has mixed insulation, we can assess all of it in a single audit. We also carry Reflectix for radiant barrier work in attics and garages.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving West Covina and nearby areas.