Demilec Radiant Barrier Installation: The Fort Worth Owner’s Guide
If you have a Demilec radiant barrier that’s sagging, torn, or no longer reflecting heat the way it should, we stock and install Demilec-compatible radiant barrier materials here in Fort Worth, with most installations running $1,100 – $2,600 depending on attic square footage and access. Most jobs are scheduled within 3 – 5 days, and same-week appointments are often available when we’re already running crews in your part of town. Owners usually discover the problem on a July afternoon when the upstairs won’t cool below 80, or during a re-roof when someone finally looks up and sees the foil hanging loose. The good news: this is a fix we handle regularly, and the cost is almost always lower than people expect once we’ve actually measured the attic.
Which Demilec Models This Applies To
Demilec manufactures radiant barrier products under a few different product lines, and the installation approach changes depending on which one is in your attic. The most common we see in Fort Worth homes is the perforated foil radiant barrier that’s stapled to the underside of roof rafters, but Demilec also produces a foam-backed radiant barrier that’s installed during spray foam applications. If your home has a Demilec spray foam system like Heatlok HFO with an integrated radiant barrier component, that’s a materially different situation than a standalone foil product. The quickest way to tell what you have: look for the product label on the foil itself, which will list a product code and manufacturing date, or check the paperwork from the original install. Demilec-compatible aftermarket foil performs comparably to OEM in Texas attic conditions, but we carry Demilec product specifically because the perforation pattern and reflectivity rating (typically 95 – 97% for Demilec foil) are what Fort Worth homes were originally specified for. We’ll match what’s already there unless you explicitly want to upgrade, and we’ll tell you if OEM versus aftermarket actually matters for your specific setup before you spend a dollar either way.
Signs Your Demilec Radiant Barrier Installation Is Failing
- Upstairs rooms run 4 – 7 degrees hotter than downstairs in summer. Radiant barrier works by reflecting radiant heat before it enters the attic air space. When the foil is sagging, torn, or missing sections, that heat loads into the attic and pushes through your ceiling insulation.
- Visible sagging or drooping foil between rafters. Staples pull loose over time in Fort Worth’s heat-and-moisture cycles. Once the foil loses tension, it no longer reflects heat at the right angle and becomes largely decorative.
- Shiny side facing up instead of down. Radiant barrier must face an air gap to work. If a previous installer stapled it with the reflective side against the roof deck, it was never functioning correctly. This is one of the most common mistakes we correct on older Fort Worth ranch homes.
- AC runtime increasing year over year despite no change in thermostat habits. Your system is compensating for attic heat gain. That’s not a problem that self-corrects, and it’s not your HVAC unit failing; it’s the envelope.
- Dust or debris caked on the foil surface. Radiant barrier loses reflectivity when it’s covered in dust, which happens fast in older Fort Worth attics with poor venting. A cleaning can restore some performance, but if the foil is also sagging or tearing, replacement is the better fix.
Replacement Cost & What’s Included
For Fort Worth homes, Demilec radiant barrier installation typically falls between $1,100 and $2,600 installed. The spread comes down to attic square footage, whether old foil needs to be removed first, rafter spacing (some older Fort Worth homes have nonstandard spacing that requires more cutting), and access conditions like low slopes or tight corners. You’re paying for material and labor together; we quote it as one number, in writing, before we start. That written price includes any disposal of old material, and it’s the price you pay even if the job takes longer than we estimated. Every Demilec radiant barrier installation we do in Fort Worth carries our 365-Day Done Right Promise: if anything isn’t right, we make it right within a year, no charge. And if the repair fails, our free second visit policy applies. One thing we don’t do is give you a number over the phone and then show up with a different one at the door. The price we give you after the attic assessment is the price on the invoice, period.
DIY or Call Us?
Installing radiant barrier in an attic isn’t high-tension dangerous like garage springs, but it’s more dangerous than it looks. Fort Worth attics in summer routinely hit 130 – 140 degrees, which is heat exhaustion territory within 20 – 30 minutes of active work. You’re also balancing on joists in dim light, often in tight rafter bays, stapling overhead while trying not to step through drywall. We’ve seen homeowners fall through ceilings more times than we like to count, and a ceiling repair plus medical bill costs more than the radiant barrier job ever would have. What you can safely do: check whether your current foil is sagging, measure the rough square footage of the foil area, and look for any product labels. That’s useful information to have ready when you call us. What we don’t recommend: doing the actual install yourself in a Texas attic in August. We have the vented suits, the hydration plan, and the crew who does this every week. Call (817) 730-5474 and we’ll schedule an attic assessment. Good insulation shouldn’t be a mystery, let me just show you the numbers.
FAQs
A properly installed Demilec radiant barrier typically lasts 15 – 20 years in Fort Worth attics, though we’ve seen some hold up longer and some fail sooner depending on ventilation, roof leaks, and how well the original staples held. The perforated foil itself is durable; the installation is usually what fails first, especially if staples were spaced too far apart or the foil wasn’t allowed to drape slightly between rafters.
Yes, sometimes a section can be re-stapled or patched if the foil is still in good condition and only a few areas have come loose. But if the foil is torn, heavily dust-coated, or has been hanging for years, patching tends to be a short-term fix that costs you more in the long run. We’ll tell you honestly which one applies to your attic during the assessment, and we won’t recommend replacement when a repair will genuinely hold.
Most Fort Worth radiant barrier installations take 4 – 8 hours for the typical 1,500 – 2,500 square foot attic, depending on access and whether old material needs to come out first. We’ll schedule it as a single-day job in almost every case, and you’ll get before-and-after photos from our technicians so you can see exactly what was installed without climbing up there yourself.
We stock Demilec-compatible radiant barrier foil on the truck, including the perforated product we use most often in Fort Worth, and we also carry Reflectix as a secondary option when the application calls for it. If your attic needs a specific Demilec product we don’t have on hand, we’ll get it within a few days and keep you updated on the timing. Call (817) 730-5474 and we’ll tell you what’s available for your specific attic setup.
Ready to get that attic sorted? Call us at (817) 730-5474 for a free estimate on Demilec radiant barrier installation in Fort Worth. We answer the phone around the clock, and we’ll get you a written price before any work starts.
Written by Chase Whitaker, Owner, Laurel Attic Insulation Fort Worth at Laurel Attic Insulation Fort Worth, serving Fort Worth and nearby areas.