Reflectix Insulation in Claremont, CA | Thermal Insulation Co
We provide independent Reflectix insulation service across Claremont and Reflectix service in Upland, including installation, repair, and retrofit work in homes from the Village-adjacent bungalows to the 1970s tracts north of Foothill. The thing that makes our Reflectix work here different is simple: we understand the air gap. Most radiant barrier failures we see in Claremont come down to that one installation detail being missed, especially under clay tile roofs. If you’re searching for someone who actually knows Reflectix products and how they behave in this specific climate, call Thermal Insulation Co at (855) 382-3451 for a free estimate.
Why Claremont Residents Choose Us for Reflectix Service
Ruben Castellano, our owner, grew up in Montebello and studied building science at East Los Angeles College before spending nearly two decades doing insulation work across the San Gabriel Valley and east LA corridor. He’s the person who walks your attic and notices what three other contractors missed. We’re not a general contractor who dabbles in insulation. We’re a dedicated insulation company, and Reflectix is one of the eight brands we’re authorized to install, alongside Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. Carrying that many product lines means we don’t have to force Reflectix into an application where another material would work better. When Reflectix is the right call for your Claremont attic, we install it correctly. When it’s not, we’ll tell you that too.
We’ve seen the inside of enough Claremont attics to know what works here. The historic housing stock near the Village, the 1920s through 1950s bungalows with original framing, the lath-and-plaster walls, the occasional knob-and-tube remnant, those homes need a different approach than a newer infill build. See our Reflectix sales & service page for the full scope of what we offer.
Common Reflectix Insulation Problems We Solve in Claremont
Here’s what we actually find when we open up Claremont attics and crawl spaces:
- Foil delamination from sustained attic heat. Claremont summer attic temperatures regularly exceed 140°F under those clay tile roofs. After years of that cycling, the reflective foil facing on Reflectix bubble insulation starts separating from the bubble core. The reflectivity drops sharply, and in the worst cases the loose foil becomes a fire concern near older wiring. We remove and replace the affected sections with fresh Reflectix material, properly fastened.
- Condensation against roof sheathing. This is the big one for Claremont’s winter nights. When temps dip into the 40s after a warm day, moisture moves. If Reflectix was installed flat against the sheathing with no air gap, that trapped moisture sits against the wood. We find rot and mold in homes where the previous installer skipped the ventilation step. Fixing it means re-installing with proper standoff and air flow.
- Compressed product losing R-value. Crawl spaces under Claremont’s older pier-and-beam homes are tight. We regularly find Reflectix that’s been crushed behind electrical conduit, plumbing lines, or just by someone else crawling through. Once the bubble layer is compressed, the insulating value is mostly gone. We’ll pull it and re-install with proper clearance.
- UV degradation on exposed surfaces. In garages and on open roof decks, Reflectix left directly exposed to sunlight will flake and lose its reflective surface within a few years. Claremont gets over 280 sunny days annually. If the product wasn’t covered or installed on the sheathing side, it degrades fast. We replace it and route the new installation so it’s protected from direct UV.
- Missing insulation tape at seams. Reflectix only performs as a radiant barrier when the seams are sealed properly with Reflectix tape. In older installations, we see tape that’s dried out and peeled. Those gaps kill the product’s performance as a vapor barrier. Seam sealing is one of the easiest fixes we do, and one of the most commonly skipped by original installers.
Reflectix Service in Claremont: What Local Conditions Mean for Your Equipment
Here’s the detail most generic radiant barrier guides never mention, and it matters enormously in Claremont: the historic core, especially the streets immediately north of the Village like College Avenue and Indian Hill Boulevard, is full of 1920s and 1930s homes with original clay tile roofs. Clay tile absorbs and radiates heat intensely. By late afternoon in July, the underside of those tiles is scorching. When Reflectix is installed directly under the tiles without an air gap, it doesn’t reject the heat back out, it actually traps it against the roof deck, and the attic gets hotter than if there were no barrier at all. That’s the opposite of what you paid for. The fix is a minimum 1-inch air gap between the Reflectix surface and the roof deck, plus baffle venting at the eaves so the air can actually move. If a room in your house has always been the wrong temperature, there is usually a straightforward reason, and it is worth knowing what it is before spending money on anything.
This also connects to Claremont’s diurnal swing. Hot inland valley days followed by foothill-cooled nights mean your attic cycles through a wide temperature range every 24 hours, from over 130°F at 3 PM to maybe 60°F by dawn. That thermal cycling is what causes tape to fail, foil to delaminate, and staples to pop. It’s also why we check the ventilation setup before we install anything. A barrier in a poorly ventilated attic just shifts the problem around. Claremont service area details are on our Claremont service area page.
Reflectix Models & Products We Service in Claremont
We install and service the full Reflectix product range that applies to Claremont homes:
- Reflectix Double Reflective Insulation Roll (Bubble Pack) – the workhorse for attic radiant barrier applications, with reflective foil on both sides of a double bubble core.
- Reflectix Reflective Foil Insulation (Single Bubble) – a lighter option for applications where the full double bubble thickness would make installation difficult, like tight wall cavities near the Village’s older lath-and-plaster framing.
- Reflectix Radiant Barrier Foil (Perforated) – the perforated variant allows moisture vapor to pass, which matters in Claremont crawl spaces where trapped moisture is a year-round concern.
- Reflectix Insulation Tape and Fasteners – we stock genuine Reflectix tape and the proper staples and washers locally, so repair and retrofit jobs in Claremont don’t wait on a parts order.
When we repair a Reflectix installation, we use genuine Reflectix products, not generic foil from a big-box store. The warranty stays intact, and the performance matches what the product was rated for. If a barrier is damaged beyond reasonable repair, we’ll run a quick cost-benefit comparison between re-installing Reflectix and switching to a different method, like blown-in fiberglass or spray foam, depending on what the home actually needs. That’s the advantage of working with a company that carries eight brands instead of one.
Reflectix Service Pricing in Claremont
Reflectix radiant barrier installation in Claremont typically runs between $1.50 and $3.00 per square foot, depending on access, the condition of the attic, and whether we’re doing a simple flat installation or working around existing framing, ductwork, and knob-and-tube remnants. A typical Claremont bungalow attic of 1,000 to 1,500 square feet usually lands in the $1,500 to $4,500 range for full coverage. Repairs like seam re-taping, partial replacements, and ventilation corrections are lower, often a few hundred dollars. The biggest cost drivers are roof pitch, ceiling height, and whether we need to address ventilation issues before the barrier goes in. A free estimate includes an attic inspection, a look at your current ventilation setup, and a written quote with the exact product and method we’d use. Call (855) 382-3451 and Ruben or a member of the team will come out and give you real numbers.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont area and know this community well, and we also offer Montclair Reflectix service just to the west. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – Reflectix Insulation in Claremont
Can Reflectix radiant barrier be installed in a Claremont attic with existing blown-in insulation?
Yes. Reflectix goes on the roof deck or rafters, not on the attic floor, so existing blown-in insulation on the floor stays put. The two systems work together, the radiant barrier handling the reflective heat load and the blown-in insulation handling conductive heat transfer. What matters is keeping the Reflectix off the decking, with a proper air gap. Call (855) 382-3451 and we’ll assess your specific attic.
How does Reflectix perform in Claremont’s hot summers and cool winter nights?
Reflectix works primarily as a radiant barrier, which means it’s most effective at blocking radiant heat gain during Claremont’s 95°F-plus summer afternoons. In winter, when the load is conductive heat loss through your insulation, Reflectix contributes less directly. It’s not a replacement for conventional insulation. In Claremont’s climate, we usually recommend Reflectix as a heat-blocking supplement to your existing batt or blown-in insulation, not as a stand-alone solution. For your specific attic, call (855) 382-3451 and we’ll run through the numbers.
Is Reflectix safe to install in older Claremont homes with knob-and-tube wiring?
This is a real concern in pre-war Claremont homes. Reflectix has a conductive foil surface, so it absolutely should not be installed directly over or against live knob-and-tube wiring. We inspect the attic wiring path before we quote anything. If knob-and-tube is present, we’ll either route the barrier to avoid it, recommend having the wiring addressed first, or suggest a non-conductive insulation alternative. We never install radiant barrier over active knob-and-tube circuits. Call (855) 382-3451 and we’ll tell you what you’re working with.
What’s the difference between Reflectix double bubble and single bubble for attic use?
Double bubble has two layers of polyethylene bubble insulation between the reflective foil faces. Single bubble has one. Double bubble provides a slightly higher R-value and better durability under Claremont’s thermal cycling, and it’s what we use for most radiant barrier applications in attics. Single bubble is thinner and easier to work with in tight spaces, like rim joists or crawl space walls, but it’s more prone to compression damage. Most Claremont attic jobs call for double bubble.
Can Reflectix help with crawl space moisture in Claremont?
Yes, in specific applications. When installed on crawl space walls with proper sealing and a vapor barrier on the floor, Reflectix acts as a moisture barrier and helps keep ground moisture from moving into the home. The key is sealing every seam with genuine Reflectix tape and making sure the installation isn’t compressed. In Claremont’s older pier-and-beam homes, which are common near the Village, this is one of the more cost-effective crawl space fixes we do, and we also handle Reflectix repair in San Antonio Heights for similar vintage properties. Call (855) 382-3451 for an exact quote.
Service Areas Near Claremont
We serve Claremont and the surrounding foothill and valley communities. If you’re a few miles west in La Verne or San Dimas, we cover those areas with the same Reflectix expertise. We also run service calls into Upland and Montclair. Farther south of the 210, our crews also cover Pomona and parts of Diamond Bar. Need Reflectix work in Orange County? See Reflectix service in Fountain Valley and Reflectix service in Orange for those areas.
Book Your Reflectix Service in Claremont Today
We run Reflectix service calls across Claremont every week, from the Village to the 91711 ZIP, plus Reflectix repair in La Verne and surrounding communities. If your attic is hot enough to bake a loaf of bread by mid-afternoon, or if you’ve got peeling foil and failed tape up there, call Thermal Insulation Co at (855) 382-3451. Ruben will come out, walk the attic with you, and tell you exactly what’s going on and what it will take to fix it. Free estimates, no pressure.
Written by Ruben Castellano, Owner at Thermal Insulation Co, serving Claremont and the San Gabriel Valley.