CertainTeed Radiant Barrier Installation: The Georgetown Owner’s Guide
Most CertainTeed radiant barrier installations in Georgetown run between $1,800 and $3,400 for a typical 2,000-2,800 square foot attic, including material, labor, and the air-sealing prep that should happen first. We stock CertainTeed-compatible barrier rolls and foil-faced sheathing on our trucks, and we can usually inspect and quote same-day. Homeowners usually figure out something’s wrong when their upstairs bedrooms won’t cool below 78°F even after the AC runs all afternoon, or when they notice the original installer stapled the barrier directly to the attic floor instead of leaving the required air gap.
Which CertainTeed Models This Applies To
CertainTeed makes two distinct radiant barrier product lines that show up in Georgetown attics: the MemBrain™ Smart Vapor Retarder with radiant barrier laminate, used primarily in wall and cathedral ceiling assemblies from 2012-2019, and the CertainTeed Solaris™ reflective roof sheathing line, which is plywood or OSB with factory-applied foil facing. The model number matters because MemBrain requires a 3/4-inch minimum air gap on the warm side to function; Solaris needs proper ridge and soffit ventilation or the foil traps moisture against the deck.
To identify what you’ve got, check the printed edge stamp on any exposed sheathing or the roll label if loose barrier was used. MemBrain rolls are 4 feet wide and marked with ASTM E96 and E84 ratings; Solaris sheathing has a faint foil embossing pattern and is stamped with APA performance numbers. We also stock Reflectix as a quality aftermarket alternative when CertainTeed OEM is back-ordered, though we match the emissivity rating - 0.05 or lower for true radiant barrier performance per ASTM C1313 - rather than just matching the brand name. Topside Attic Insulation Georgetown is an independent service provider, not affiliated with CertainTeed.
Signs Your CertainTeed Radiant Barrier Installation Is Failing
- Hot second-floor ceilings in late afternoon. The barrier’s emissivity has degraded, or dust accumulation on the foil surface has pushed the effective emissivity above 0.10. In Georgetown’s limestone-dust environment, this happens faster than the manufacturer spec suggests.
- Visible sagging or torn sections. Staples pulled through or tape adhesive failed in attic heat cycling. We’ve found this especially in Sun City Georgetown homes where the original install used 1/4-inch staples instead of the 1/2-inch cap nails CertainTeed recommends for ceiling applications.
- Moisture staining on ceiling drywall below the barrier. The vapor retarder property is working but the radiant barrier isn’t, creating a cold spot where condensation forms. This is common when MemBrain was installed without the required air gap.
- AC runtime increased 20% or more year-over-year. Your insulation R-value hasn’t changed, but radiant heat gain through the roof deck has overwhelmed the barrier. We measure this with a surface thermometer - roof deck temperatures above 160°F in a Georgetown August tell the story.
- Foil facing delaminating from OSB sheathing. Solaris sheathing can separate at the glue line after repeated wet-dry cycles. Homes near the San Gabriel River corridor with higher humidity see this more frequently than drier west Georgetown builds.
Before
AfterReplacement Cost & What’s Included
The installed price depends on whether we’re retrofitting loose barrier or replacing failed Solaris sheathing during a re-roof. For loose barrier replacement in a typical Georgetown attic - air-sealing prep, removal of failed material, installation of new CertainTeed-compatible barrier with proper air gap and fastening - most jobs fall between $1,800 and $2,800. If Solaris sheathing replacement is needed and the roof is coming off anyway, add $1.20-$1.60 per square foot for the upgraded deck material plus labor.
What’s included: removal and disposal of failed barrier, foam-sealing of all top plates and penetrations before new material goes in, installation per manufacturer spec with documented fastening pattern, and a post-job thermal image set showing the reflective surface continuity. On jobs where we also run the blower door, you’ll get before-and-after CFM50 numbers. Our 365-Day Done Right Promise covers the installation workmanship; material defects go through the manufacturer’s channel.
DIY or Call Us?
There’s one thing a homeowner can safely check: whether the barrier has an air gap. In your attic, if the foil is lying flat against the ceiling drywall or roof deck with no spacer, it was installed wrong and was never working as a radiant barrier. That’s information, not a repair.
Actually replacing the material is where DIY goes wrong. Attic work in Georgetown in July runs 140°F-plus, heat exhaustion is real, and the footing is unforgiving. More importantly, improper vapor retarder placement traps moisture and voids your shingle warranty. We carry the right respirators, the right staplers, and the liability coverage. Call (254) 970-2136 for a written price before any work starts - we’ll inspect, photograph what we find, and give you the flat number.
FAQs
In Central Texas conditions, a properly installed radiant barrier maintains effective performance for 15-25 years, though dust accumulation in Georgetown’s limestone-heavy environment can degrade reflectivity faster on loose barrier installations. We inspect for this during our energy audits and can clean or replace sections as needed. Call (254) 970-2136 for an exact assessment - estimates are free.
Small tears or detached sections can sometimes be re-fastened if the foil facing is still intact and the air gap is correct, but delaminated Solaris sheathing or degraded emissivity requires full replacement. We document the condition with photos so you can see what we’re seeing before deciding. Call (254) 970-2136 for a written price before any work starts.
Most loose barrier replacements in a 2,000-square-foot attic take one full day, including the air-sealing prep we do first. Solaris sheathing replacement during a re-roof adds a half-day to the roofing schedule. We don’t rush the prep - seal the holes first. Then we talk about R-value. Call (254) 970-2136 to schedule.
We carry CertainTeed-compatible foil barrier rolls and Reflectix alternatives on every Georgetown-area truck, plus the cap nails, spacers, and vapor-retarder tape the install spec requires. For Solaris sheathing, we order to the job after measuring your roof deck. Call (254) 970-2136 and we can usually inspect same-day.
Written by Wes Okafor, Owner, Topside Attic Insulation Georgetown at Topside Attic Insulation Georgetown, serving Georgetown and nearby areas.