Reflectix Insulation in Sunnyvale, CA | Topside Attic Insulation Mountain View
We provide independent Reflectix service across Sunnyvale, from Lakewood ranches to new ADU conversions. The one thing that makes our Reflectix work here different: we know how this product performs under Bay Area low-pitch roof decks, and we won’t install it until your Sunnyvale Attic Insulation is properly air-sealed first. If you’re dealing with dusty foil, compressed bubble core, or a Title 24 inspector flagging your bare roof deck, call us at (669) 259-0406 for a free estimate with a written price before any work starts.
Why Sunnyvale Residents Choose Us for Reflectix Service
We’ve installed and serviced Reflectix radiant barrier and reflective foil products across hundreds of Sunnyvale-area homes. That focus means we know how Reflectix actually performs under Bay Area roof decks and low-pitch attic assemblies, not just how it looks on a spec sheet.
Wes Okafor, our owner and lead technician, grew up on Chicago’s South Side and learned the trade at Richard J. Daley College before spending nearly two decades on insulation jobs up and down the San Francisco Peninsula. His crew has worked in Mountain View’s Rex Manor neighborhood, pulling out compacted fiberglass batts and replacing them with properly staged blown-in cellulose. Wes keeps a notepad in the truck and writes down what he found in each attic, not because anyone asks him to, but because he says the next person who goes up there deserves an honest picture. That habit carries over to every Reflectix sales & service call we make in Sunnyvale service area.
We source genuine Reflectix rolls and matching Reflectix foil tape for repairs and new installs. When someone asks about a non-Reflectix foil, we tell them Reflectix is the brand-specific match, but any quality radiant barrier works if the air gap and seams are built right. Most failures we see in Sunnyvale are installation or exposure problems, not product death. We clean and re-tension before recommending replacement.
Common Reflectix Insulation Problems We Solve in Sunnyvale

- Foil delamination and surface scuffing. Reflectix’s metallized polyester facing can separate from the bubble core where attic batt insulation or stored items rub against it. In Sunnyvale’s tight low-pitch ranch attics, there’s rarely enough headroom to avoid contact, and we’ve found this damage concentrated near pull-down stairs and HVAC platforms in Lakewood homes where the previous installer left no clearance.
- Staple-point compression and seams. In 2×4-framed Lakewood and Raynor Park attics, installers sometimes staple too tightly, compressing the bubble core at studs. This collapses the air gap that gives Reflectix its radiant performance. We remove the compromised sections and re-staple with proper tension, using Reflectix foil tape on seams so the barrier stays continuous.
- Dust accumulation on the reflective surface. Because Sunnyvale attics see seasonal temperature swings without extreme heat, homeowners assume Reflectix is maintenance-free. Dust and spider webbing on the foil cut emissivity fast. We see this most often in 1960s ranches where the original batts have degraded to powder and contaminated the foil below. A soft brush cleaning restores most of the reflectivity; we document before and after with photos.
- Misapplication below roof decking without a ventilation gap. We see Reflectix laid flat against roof sheathing or over old settled batts with no air space. This traps moisture and does nothing for the radiant barrier rating it was purchased for. Sunnyvale’s marine climate means moisture issues develop slowly, so the failure isn’t obvious until an inspector or energy audit catches it.
- Title 24 compliance gaps on permitted work. A kitchen remodel in a 1960s Raynor Park ranch triggers a full envelope review, and bare roof decks or missing radiant barriers get flagged. We fold Reflectix upgrades into the permit-driven scope so the homeowner doesn’t face a re-inspection failure.
Reflectix Service in Sunnyvale: What Local Conditions Mean for Your Equipment
Sunnyvale’s dominant housing stock, postwar ranch homes from the 1950s and 1960s concentrated in neighborhoods like Lakewood and Raynor Park, was commonly built with zero wall-cavity insulation. This wasn’t neglect. California builders at the time justified the shortcut with the mild climate, and those walls have stood empty for sixty years. With PG&E residential rates among the highest in the nation and California’s Title 24 energy code triggered the moment any permitted renovation touches these homes, Sunnyvale sits at a unique intersection: a massive retrofit backlog meeting mandatory compliance upgrades. That combination drives insulation demand regardless of season, and it shapes how we approach every Reflectix job.
Here’s what this means specifically for Reflectix owners. A contractor pulling any permit on a 1960s ranch in Lakewood or Raynor Park will almost always find uninsulated 2×4 stud walls, original construction, not deterioration. The Title 24 compliance check attached to even a kitchen remodel permit forces the insulation conversation every time. We regularly fold Reflectix upgrades into permit-driven retrofit scopes rather than treating them as optional add-ons. A homeowner on a 1960s ranch near Lakewood Park called us after a kitchen permit triggered a Title 24 review and the inspector flagged their bare roof deck. Our tech found crumbly, 50-year-old batts and dusty foil remnants, so we removed the debris, air-sealed the top plates, and installed Reflectix BP48025 across the roof rafters with a stapled ventilation gap. We finished with added attic baffles and a blown-in top-up so the radiant barrier and venting actually worked together, and the homeowner passed re-inspection with a noticeably tighter attic. The blower-door printout showed the change in ACH50, air changes per hour at 50 pascals, and that’s what we handed them at the end.
Seal the leaks first. The insulation has nowhere to go if the air does.
Reflectix Models & Products We Service in Sunnyvale

We work with the full Reflectix residential line and stock the most common rolls for same-day Sunnyvale jobs:
- Reflectix BP24010 - 24 in. x 10 ft. double reflective insulation roll, used for knee walls, crawl space wraps, and small attic patches
- Reflectix BP48010 - 48 in. x 10 ft. double reflective insulation roll, standard for short rafter runs and garage ADU roof decks
- Reflectix BP48025 - 48 in. x 25 ft. double reflective insulation roll, our most common full-attic install size in Sunnyvale’s low-pitch ranches
- Reflectix R-21 - 48 in. x 25 ft. reflective foil insulation / radiant barrier roll, used where a higher-rated barrier is specified for Title 24 compliance
We carry Reflectix-branded foil tape and matching fasteners. For repairs, we match the existing product line so vapor and radiant properties stay consistent. For new installs, we select based on rafter spacing, ventilation strategy, and whether the job is standalone or part of a permitted retrofit with specific R-value or emissivity requirements.
Reflectix Service Pricing in Sunnyvale
Most Reflectix radiant barrier jobs in a Sunnyvale home this size run between $1,800 and $3,400 for attic installation, including removal of degraded existing material, air sealing of top plates and penetrations, and installation of new Reflectix with proper ventilation gap and seam taping. Wall-cavity Reflectix in a 2×4 retrofit runs $2,400-$4,200 depending on square footage and whether we’re opening walls or working through existing access.
What drives the cost: condition of existing insulation, accessibility of the attic or wall cavity, whether Title 24 compliance documentation is required, and whether blower-door verification is included. Every estimate we provide in Sunnyvale includes a written price before any work starts, a documented photo record, and on applicable jobs, before-and-after blower-door readings. Call (669) 259-0406 for an exact quote on your specific Reflectix project, estimates are free.
Serving Sunnyvale, CA - Our Local Coverage Area

We’re based in the Sunnyvale area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Reflectix Insulation in Sunnyvale
Yes, Reflectix products with the appropriate emissivity rating meet Title 24 requirements when installed with the required ventilation gap and proper documentation. We provide the product spec sheets and installation photos that Sunnyvale building inspectors need to see. If your permit review is already in progress, call (669) 259-0406 and we’ll coordinate directly with your contractor on the compliance package.
Reflectix can work in 2×4 wall cavities, but it performs best as a radiant barrier with an air gap, not compressed between studs. In Sunnyvale’s uninsulated Lakewood and Raynor Park ranches, we often pair a thin Reflectix layer with dense-pack blown-in insulation behind it, or we specify Reflectix in cathedral ceilings and roof assemblies where the air gap is easier to maintain. We’ll look at your specific wall construction and tell you whether Reflectix is the right tool, if our Spray Foam Insulation in Sunnyvale fits better, or if Rockwool or cellulose makes more sense for that cavity. Call for a free assessment.
Dust and spider webbing on the foil surface cut emissivity, which is the measure of how well the surface reflects radiant heat. A clean Reflectix facing reflects up to 96% of radiant energy; a dusty one might perform at half that. In Sunnyvale’s moderate climate, the degradation happens slowly enough that homeowners don’t notice until an energy audit or inspection catches it. We clean most dusty Reflectix in place and restore performance without replacement. If the dust is mixed with degraded fiberglass powder from old batts above, we remove both and start fresh. Call (669) 259-0406 for a free evaluation.
No. Reflectix requires a minimum ventilation gap, typically 3/4 inch, between the reflective surface and the roof sheathing to function as a radiant barrier. Laid flat against wood, it becomes a conductive heat path and can trap moisture. Sunnyvale’s marine-influenced climate means moisture issues develop slowly, so this mistake often goes undetected for years. We install with stapled baffles or spacers to maintain the gap, and we document the gap width in our photo record. If your existing Reflectix is flat against the sheathing, we re-install it correctly.
Most garage ADU conversions in Sunnyvale trigger full Title 24 compliance, which includes a radiant barrier or equivalent insulation on the roof deck. Reflectix BP48010 or BP48025 is commonly specified for these low-pitch structures because it’s lightweight and fits tight spaces. We coordinate with your ADU contractor on the permit submittal and install to the inspector’s exact requirements. For pricing on your specific ADU roof deck, call (669) 259-0406 for a free written estimate.
Service Areas Near Sunnyvale

We run Reflectix calls throughout the South Bay from our Mountain View base. Our regular service area includes Reflectix service in Mountain View, Reflectix service in Los Altos, plus Palo Alto, Los Altos Hills, and East Palo Alto. Most Sunnyvale appointments book within 24-48 hours.
Book Your Reflectix Service in Sunnyvale Today
Call (669) 259-0406 now for a free Reflectix estimate in Sunnyvale. We’ll send a written price before any work starts, and if your job is part of a permitted renovation, we’ll coordinate with your contractor on Title 24 compliance from day one. Same-day appointments available for urgent inspection deadlines.
Written by Wes Okafor, Owner at Topside Attic Insulation Mountain View, serving Sunnyvale and the Peninsula since 2016.