Demilec Home Energy Audit Nationwide

Demilec Home Energy Audit in Los Angeles: What to Know First

A Demilec home energy audit in Los Angeles typically costs between $295 and $495 depending on home size and how many tests we run, and the full inspection takes about 2 to 3 hours on site. We provide independent Demilec home energy audit services across Los Angeles, meaning we work on the spray foam you already have without being tied to the manufacturer. This page is for LA homeowners with Demilec spray foam insulation, including Sealection 500 and Heatlok HFO, who want a straight answer on where their home is losing energy and what to do about it. Call (855) 657-3403 and a live person answers, day or night.

Call (855) 657-3403

How Demilec Products Fail - and How We Find It

• Sealection 500 open-cell shrinkage at the roofline. We’ve opened enough attics in Los Angeles to know that open-cell Demilec foam can pull away from rafters after years of thermal cycling. When that happens, unconditioned attic air sneaks past the foam at a dozen tiny gaps. Our thermal imaging catches this in minutes because the temperature difference at each gap shows up as a bright signature. The fix is typically a targeted air seal plus re-foam at the separation points, not a full removal.
• Heatlok HFO closed-cell cracking at seams in older installs. Closed-cell Demilec is rigid, and Los Angeles homes built on hillsides shift more than flatland houses. Hairline cracks along foam seams let conditioned air escape slowly, and most owners never see them because they’re hidden under drywall or behind knee walls. A blower door test tells us exactly how much total leakage you have, then thermal imaging pinpoints the cracks. We repair seams with compatible closed-cell foam rather than slapping caulk over the top.
• Heatlok Soy 200 yellowing and odor after moisture exposure. Some Demilec installs from the early 2010s react poorly when roof leaks or bathroom exhaust venting sends moisture into the foam. The foam gets brittle, smells musty, and loses R-value per inch. In a Los Angeles home energy audit we check for this with a moisture meter before recommending anything, because the right fix might be repairing the moisture source first and replacing only the affected foam section.
• Improper Demilec application thickness from day one. We regularly audit homes in neighborhoods like Van Nuys and Reseda where the Demilec foam was applied too thin, usually at the rim joists or in the garage ceiling. You paid for an air barrier, and you got a partial one. Our audit includes thickness spot-checks at common trouble areas. Where coverage is thin, we quote a supplemental fill, which is far less invasive than a full re-install.
• Sealection Agribalance pest compromise. In parts of Los Angeles with heavy rodent pressure, notably hillside communities like Mount Washington, rats tunnel through open-cell Demilec foam. The damage looks nothing like thermal failure, but it vents your conditioned air straight into the attic. We identify rodent tunnels and chew paths during the audit, then separate the insulation fix from the exclusion work so you know exactly what you’re paying for on each line.

Our Demilec Home Energy Audit Process

1. 1
   We schedule your audit and confirm square footage. A live person answers at (855) 657-3403, takes your address, and gives you an arrival window that we actually keep.
2. 2
   We start with the blower door test. We mount the fan in an exterior door frame and depressurize the house. This gives us a baseline for total air leakage before we ever look at the Demilec foam.
3. 3
   Thermal imaging across every wall, ceiling, and rim joist. This is where Demilec-specific failures show themselves: shrinkage gaps, seam cracks, thin spots, and moisture intrusion all read differently on the camera. Our techs are trained to interpret these patterns in Los Angeles homes specifically.
4. 4
   Duct leakage testing when your ducts run through unconditioned space. For many LA homes, the attic is the enemy. If your Demilec foam is at the roofline but your ducts are leaky, you’re paying to cool attic air. We test and report the numbers.
5. 5
   We walk you through everything and give you a written scope of work. No pressure, no upselling. If the audit says your Demilec foam is fine and your windows are the problem, we’ll tell you that. Every recommendation comes with a line-item price, and most jobs we can do in a single visit. If anything we touch isn’t right, the 90-Day Done Right Promise covers it.

What Demilec Home Energy Audit Costs in Los Angeles

An audit alone runs $295 to $495 in Los Angeles, and that price covers the blower door test, thermal imaging, duct leakage test, and a written report with photos. Yes, that’s money out of pocket. But we apply the audit cost as a credit toward any repair work we do, which means if we find a failing Demilec section and you have us fix it, the audit effectively costs you nothing. Sealection 500 seam repairs generally run $400 to $900 depending on how many gaps we need to address. Heatlok HFO crack sealing at rim joists usually lands between $350 and $800. A supplemental foam fill for thin Demilec coverage is the most expensive scenario, often $1,200 to $3,500 for a typical LA attic. We provide exact pricing before any work starts, so there are no surprises on the invoice. Call (855) 657-3403 for a free estimate, and ask about the $50 Off Any Repair Over $250 discount.

Why Los Angeles Homeowners Call Warmline Insulation Co. for Demilec Work

We’ve been in business since 2011, and we’ve inspected enough Demilec foam in Los Angeles to know which failures are real and which are false alarms. Every technician we send is background-checked and wears a uniform, so when we walk into your home, you know exactly who’s there. We also service other insulation brands, including Reflectix for radiant barrier applications, which means you’re getting an honest assessment rather than a pitch that every problem points back to one product. Neil Ashford grew up in the San Fernando Valley and knows how brutal an under-insulated attic feels in August, which is why he built this company around the idea that comfortable homes don’t happen by accident - they’re built that way, one layer at a time. Our pricing is upfront, most jobs finish in a single visit, and if the work isn’t right, the 90-Day Done Right Promise means we make it right.

FAQs