Demilec Radiant Barrier Installation in Burbank: What to Know First
Demilec radiant barrier installation in Burbank typically runs $1.80 to $3.50 per square foot depending on your attic configuration, and most jobs are completed in a single visit. We install Demilec’s reflective insulation products as an independent Demilec service provider, not a manufacturer-authorized dealer, which means we recommend the right Demilec product for your home without a sales quota driving the conversation. If you own a Demilec product already, or you’re considering one after doing your research, this page covers what actually happens in Burbank attics and what you should know before anyone staples a single square foot to your rafters. Call (747) 837-5834 and you’ll get a live person, not a voicemail.
How Demilec Products Fail - and How We Fix Them
Most radiant barrier problems in Burbank aren’t the foil itself. They’re installation shortcuts, missed air sealing, or the wrong product for the roof shape. Here’s what we see regularly with Demilec lines:
- Demilec HeatBloc-75 Ultra tears at staple points during summer heat cycles. Burbank attics hit 140°F in August, and cheap installers over-staple the foil tight to the rafters. The aluminum expands, stretches at the staple, and eventually sags or rips. We staple at the reinforced edges only, leave the slight drape the product data sheet calls for, and the install holds for decades.
- Demilec Reflectix-style double-bubble products lose their low-e benefit when installed flat against the roof deck. We see this constantly in Magnolia Park ranches from the 1950s and 60s. The product needs an air gap to reflect heat; installed flat, it becomes a conductor. We re-install with the proper ¾-inch spacer system or reframe the approach entirely.
- Perforated Demilec radiant barriers trap moisture in Burbank’s winter months. The perforations are supposed to let vapor escape, but when installers overlap seams the wrong way or block soffit vents, condensation collects against the roof deck. Over time you get mold on the plywood. We check your ventilation math before we install anything, and we fix the vent path first.
- Deck-attached Demilec HeatBloc installed without a radiant barrier underlayment on a re-roof presents a tear-off problem later. If you’re planning a roof replacement within five years, we’ll tell you honestly: a staple-up attic-side barrier might serve you better than a deck product. We’re not here to sell you the more expensive job.
- Demilec products mixed with non-Demilec tapes and adhesives fail at the seams. The adhesives Demilec specs are matched to their foil chemistry. Generic foil tape breaks down from UV and heat exposure in attics with ridge vents. We use the manufacturer-specified tapes and adhesives on every Demilec job, because a seam that peels at year three makes the entire barrier pointless.
Our Demilec Radiant Barrier Installation Process
Here’s how a typical Demilec job runs from first call to cleanup:
- 1
Call and assessment. You call (747) 837-5834, a human answers, and we ask about your home’s age, roof type, and what’s driving the call. Most Burbank homeowners mention upstairs rooms running 10 degrees hotter than downstairs.
- 2
Attic inspection. Our uniformed, background-checked technician checks your existing insulation depth, air leaks around can lights and plumbing chases, and your soffit and ridge vent airflow. Radiant barrier without working ventilation is a waste of money, full stop.
- 3
Product decision. We recommend the specific Demilec product for your roof shape and attic access. Steep pitch, low pitch, zero attic space, or a flat roof all call for different approaches. We walk you through why.
- 4
Prep and air sealing. We seal bypasses around ductwork, wiring, and framing before the radiant barrier goes up. This is the step most contractors skip, and it’s the difference between a 5-degree improvement and a 15-degree improvement.
- 5
Installation. We staple the Demilec product to rafters or deck with the proper air gap, correct seam overlap, and manufacturer-specified tape. Clean lines, no sag, no shortcuts.
- 6
Test and walkthrough. We take surface temperature readings, show you before-and-after numbers, and leave the space cleaner than we found it. Your 90-Day Done Right Promise paperwork comes with the invoice.
What Demilec Radiant Barrier Installation Costs in Burbank
For a typical 1,200-to-1,500-square-foot Burbank attic, expect to pay between $2,100 and $4,800 for a complete Demilec radiant barrier installation, including prep and air sealing. Smaller jobs like a single hot room over a garage run $800 to $1,400. Here’s the breakdown:
- Demilec HeatBloc-75 or similar attic-side barrier, installed: $1.80 to $2.50 per square foot
- Demilec double-bubble product with proper gap system: $2.20 to $3.20 per square foot
- Radiant barrier underlayment for a re-roof (deck product): $2.50 to $3.50 per square foot
- Attic air sealing add-on during radiant barrier install: $400 to $1,200 depending on penetrations
- Demilec product replacement only (small repair): $180 to $500
Prices move based on attic height, access, existing insulation depth, and how much repair your ventilation needs. Call (747) 837-5834 for a free estimate with real numbers. No surprises, and if it qualifies, take $50 off any repair over $250 or the 5% Senior & Veteran discount on the whole job.
Why Burbank Homeowners Call Warmline Insulation Co. for Demilec Work
We’ve been in Burbank attics since 2011, and Neil Ashford has spent the better part of two decades making sure homes near Magnolia Park, the Rancho District, and up in the Verdugo foothills stay cool without the AC running around the clock. We carry Demilec products, and when a job calls for something else, we also work with Reflectix and other benchmark brands like Owens Corning and Rockwool. Most radiant barrier jobs are done in one visit. Every job is backed by our 90-Day Done Right Promise: if it’s not right, we make it right. Written commitment, in plain English, on every invoice. We answer the phone around the clock, and the person who shows up is background-checked, uniformed, and knows Demilec products well enough to tell you when switching brands would serve your home better.
FAQs
No, as long as the installation follows Demilec’s published specifications for air gap, staple placement, seam overlap, and tape. We install to those specs every time because the product only performs when it’s installed the way the lab tested it. We’re an independent Demilec service provider, so we’re not bound by a dealer agreement, but we hold ourselves to the manufacturer’s standard anyway.
In most cases, yes. Burbank jobs during summer fill fast, but we hold same-week slots for urgent cases like a failed barrier in a nursery or a home office that’s become unusable by 2 p.m. Call (747) 837-5834 and we’ll tell you the first available date in real time.
If tears cover more than about 15 percent of the total area, or if the sag means you’ve lost the air gap across a full rafter bay, replacement is cheaper long-term than chasing repairs. Small staple tears and seam lifts are repairable in under an hour. We’ll show you the tear and let you decide with numbers in front of you.
In Burbank’s climate with proper attic ventilation, a correctly installed radiant barrier typically lowers ceiling temperatures by 10 to 20 degrees in summer, which translates to a 5 to 10 percent drop in cooling costs for most homes. The older the home and the less existing insulation, the bigger the improvement. Call (747) 837-5834 for an honest assessment of what your specific attic can deliver.
Written by Neil Ashford, Owner, Warmline Insulation Co. at Warmline Insulation Co., serving Burbank and nearby areas.