Trusted Radiant Barrier Installation for Boerne Homeowners
Radiant barrier installation in Boerne typically costs $1,800-$3,400 for a standard attic and drops roof deck temperatures by 20-35°F during peak summer months. Most homes in Boerne, Fair Oaks Ranch, and Scenic Oaks see payback in 3-5 years through reduced AC runtime. We complete most installations in a single day and answer calls live at (830) 529-7780.
We’ve sealed and insulated over 9,000 homes since 2016, and every one started with a written price before any work began. In Boerne’s Hill Country climate, where attic temperatures regularly hit 140°F in July and August, radiant barriers are one of the most cost-effective envelope upgrades you can make. But here’s what we’ve learned from blower-door testing across Kendall and Bexar counties: a radiant barrier installed over an unsealed attic floor is like putting a sunshade on a screen door. The heat still finds its way in through air leaks. That’s why we seal first, then install - in that order, every time. Under Haven Standard Clause 1, you’ll receive a flat written price, a written scope, and a written warranty before anyone lifts a tool.
What Our Radiant Barrier Installation Service Includes
Attic Radiant Barrier
Attic radiant barrier is a reflective material, usually aluminum-faced, installed across the attic floor or draped over existing insulation to block radiant heat transfer from the roof deck downward. In Boerne’s sun-baked summers, this is the most common application we see, especially in homes built between 2015 and 2025 in neighborhoods like The Dominion stretches and Esperanza. We inspect your current insulation depth and condition first, because laying radiant barrier over compressed or moisture-damaged fiberglass defeats the purpose. Our crews document existing R-values with photos, then install either perforated foil or woven product depending on your attic’s ventilation profile. Every attic radiant barrier job includes air sealing of top plates, can lights, and penetrations before the barrier goes down, plus a Documented Photo Record showing before, during, and after.
Radiant Barrier Foil
Radiant barrier foil is the thin, flexible sheet product most homeowners picture when they hear the term, typically double-sided aluminum with a center scrim for tear resistance. We use this in Boerne attics where ductwork runs through the space and where homeowners need a solution that won’t interfere with future insulation upgrades. The foil we source from Owens Corning and Johns Manville is perforated to allow moisture vapor passage, critical in Hill Country homes where winter humidity swings can otherwise trap condensation. We staple to rafters in a cathedral ceiling application or lay it flat over blown-in in traditional attics. What separates our installs: we mark every seam with tape rated for 180°F, and we photograph the full grid pattern so you have a record of coverage percentage if you ever sell the home.
Radiant Barrier Roof Deck
Radiant barrier roof deck installation means attaching the reflective material directly to the underside of the roof sheathing, either during new construction or a re-roof, or in retrofit applications where we work from inside the attic. This is the most effective configuration in Boerne because it stops radiant heat before it enters the attic cavity at all, keeping roof deck surfaces 30-50°F cooler than unprotected OSB. We see strong demand for this in Fair Oaks Ranch and Scenic Oaks, where larger roof areas and darker shingle colors amplify heat gain. Our crews use 1-inch cap nails with plastic washers to maintain an air gap between foil and sheathing, critical for performance. On applicable jobs, we run a blower-door test before and after air sealing so you can see the CFM50 reduction in black and white.
Radiant Barrier & Ventilation
Radiant barrier and ventilation is the paired approach we recommend for Boerne homes with limited soffit venting, hip roof designs, or attics that have shown moisture accumulation in past summers. A radiant barrier without adequate airflow can become a heat sink, especially in enclosed cathedral assemblies common in Timberwood Park and Bulverde builds from the late 2010s. We calculate your net free ventilating area against attic square footage, then specify ridge vents, gable vents, or powered attic ventilators as needed. The Haven Standard requires we show you the math: intake versus exhaust, in writing, before we add any equipment. We’ve documented cases where adding radiant barrier alone reduced ceiling surface temperatures by 8°F, but pairing it with proper ventilation dropped them 18°F. That’s the difference between a marginally cooler attic and a genuinely reduced cooling load.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Brands We Service for Radiant Barrier Installation
We source radiant barrier materials from Owens Corning, Johns Manville, and GreenFiber, among others, and we’ve installed thousands of square feet of each. With Owens Corning products, we typically specify their radiant barrier sheathing for new construction or re-roof scenarios in Boerne’s 78006 and 78015 ZIP codes, where the integrated foil facing saves labor and eliminates staple-point corrosion concerns we’ve seen in older installs. Our crews know the product line well enough to spot the difference between their LP TechShield and standard OSB on sight, which matters when you’re verifying what a previous contractor actually installed.
GreenFiber’s cellulose-based products come into play when we’re doing a full attic system and the homeowner wants a radiant barrier layer combined with blown-in insulation in one pass. We don’t lock you into any single manufacturer, and we don’t claim exclusive or preferred status with any brand. Whether your existing attic has Icynene spray foam that needs a radiant barrier cap, Demilec open-cell that requires a vapor-retarder overlay, or a mix of products from a previous contractor, we can assess what you’ve got and specify what should happen next. Bring us a competing quote and we’ll read it with you, line by line, under our Free Second Opinion policy.
Signs You Need Radiant Barrier Installation Right Now
- Your upstairs rooms stay 8-12°F hotter than downstairs even when the AC runs constantly. This temperature stratification is the signature of radiant heat bleeding through the ceiling plane. In Boerne’s July and August, unprotected roof decks hit 160-180°F, and that energy radiates downward through drywall and insulation that was never designed to stop it. We’ve measured ceiling surface temperatures of 95°F in homes where the thermostat reads 72°F downstairs.
- Your AC unit cycles on every 10-15 minutes starting at 10 a.m. and doesn’t catch up until after sunset. Short cycling driven by radiant heat gain means your compressor is working harder, not smarter. Over a full cooling season in Kendall County, that runtime adds 20-40% to your electric bill compared to a home with proper attic radiant barrier and sealed envelope.
- Your attic insulation looks flat, gray, or has dark streaks on top. Those streaks are dust patterns marking air leaks, and flat insulation has lost its loft and R-value. Adding radiant barrier over damaged insulation is like painting over rot. We remove and replace when needed, seal the deck, then install fresh barrier material with full documentation.
- You’re planning to sell within 2-3 years and want documented efficiency upgrades. Boerne buyers in the 32-50 age bracket increasingly ask for utility bills and energy audit results. A radiant barrier installation with before-and-after blower-door numbers and a photo record gives you a transferable asset, not just a comfort improvement. We’ve had sellers in Esperanza and Leon Springs report faster closings after providing our documentation packets.
- Your roof is 15+ years old and you’re budgeting for replacement. This is the optimal window for roof-deck radiant barrier, since the crew will have the decking exposed anyway. Retrofitting from inside costs 40-60% more than doing it during re-roof. We coordinate with roofing contractors in Boerne, Fair Oaks Ranch, and Helotes regularly, and we’ll write a scope that integrates with their timeline so you’re not paying for access twice.
Our Radiant Barrier Installation Process - Step by Step
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Schedule and arrival. You call (830) 529-7780 and a live person answers, 24/7. We book a specific arrival window, not a full-day placeholder. Under Haven Standard, you get a named technician and a text when they’re 30 minutes out. We’ve served Boerne, Fair Oaks Ranch, and Scenic Oaks long enough to know which FM 3351 construction zones to route around.
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Attic inspection and blower-door test. We access the attic, document existing insulation depth and condition with photos, and run a blower-door test to establish your baseline CFM50 - the pressurization reading that shows, in one number, how much conditioned air your building envelope is losing. Most Boerne homes built 2015-2020 test between 3,500 and 6,000 CFM50 before air sealing. We explain your number on site, in plain language.
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Written scope and price. Before any work starts, you receive a flat price, a written scope detailing every penetration we’ll seal and every square foot of radiant barrier we’ll install, and a written warranty. This is Haven Standard Clause 1, non-negotiable. No surprises, no day-of add-ons. If you have a competing quote, we’ll review it with you under our Free Second Opinion.
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Air sealing and preparation. We seal top plates, electrical penetrations, can lights, bath fan housings, and chimney chases with fire-rated foam, caulk, or rigid blocking as appropriate. This step typically takes 2-4 hours in a Boerne home and reduces CFM50 by 15-35%. We photograph every sealed location. Only after this is complete do we begin radiant barrier installation.
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Radiant barrier installation and final documentation. We install your specified product - foil, roof-deck, or integrated system - with proper air gaps, taped seams, and clearance around combustion vents. We run a final blower-door test on applicable jobs, compile your before-and-after readings, and deliver your Documented Photo Record. The 365-Day Done Right Promise applies from this moment: if it’s not done right, we make it right.
How Much Does Radiant Barrier Installation Cost in Boerne?
A typical attic radiant barrier installation in Boerne runs $1,800-$2,800 for homes under 2,500 square feet, while roof-deck applications during re-roofing range $2,400-$3,400 depending on pitch complexity and accessibility. Full attic systems combining radiant barrier with air sealing and insulation replacement in larger homes - common in Fair Oaks Ranch and Scenic Oaks - typically fall between $3,200 and $5,500.
Several factors move the needle on your specific price. Attic square footage is obvious, but roof pitch matters more than most homeowners expect: a 12/12 pitch in a Bulverde custom home requires harness work and adds labor hours versus a 4/12 ranch in Helotes. Existing insulation condition determines whether we can overlay or need removal first. And the product type itself varies: perforated foil over existing insulation is the most economical, while rigid radiant barrier sheathing on a new roof deck runs higher but delivers superior performance and longevity.
What we don’t do: quote a low number to get in the door, then discover “unforeseen conditions.” Our written price includes everything in the scope, period. The free estimate visit takes 45-60 minutes, and you leave with a real number, not a range that doubles on installation day. To avoid overpaying elsewhere, ask any contractor for their air-sealing plan in writing, their target CFM50 reduction, and whether they photograph every step. If they can’t produce those, you’re buying a product, not a result.
Radiant Barrier Installation Near Boerne - Our Service Area
We run radiant barrier crews throughout Kendall and northern Bexar counties, with typical response times of same-day to 48 hours across Boerne, Fair Oaks Ranch, Scenic Oaks, Helotes, Timberwood Park, Lakehills, Bulverde, Leon Valley, Castle Hills, and Alamo Heights. San Antonio metro calls route through our central dispatch, and Terrell Hills homeowners typically see us within two business days. We know the local building departments, the permit requirements for re-roof integrations in Boerne city limits, and the HOA architectural guidelines in gated communities like Cordillera Ranch. That local knowledge saves you delays and rework.
Serving Boerne, TX - Our Local Coverage Area
We’re based in the Boerne area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Radiant Barrier Installation in Boerne
Radiant barrier installation is the process of adding a reflective material, typically aluminum-faced foil or sheathing, to your attic or roof assembly to block radiant heat transfer from the roof deck into your living space. Unlike insulation, which slows conductive heat flow, radiant barriers reflect heat back toward its source. In Boerne’s climate, this directly reduces the load on your air conditioning system during the 100+ days per year when attic temperatures exceed 120°F.
Most residential radiant barrier installations in Boerne are completed in a single day, typically 4-8 hours depending on attic size, accessibility, and whether air sealing is included. Roof-deck applications during re-roofing add 2-3 hours to the roofing schedule. We arrive with a written scope and leave with a documented record, same day. Call (830) 529-7780 to check current availability.
Attic floor applications typically run $1,800-$2,800, roof-deck work $2,400-$3,400, and integrated systems with air sealing $3,200-$5,500 depending on home size and existing conditions. Your free estimate includes a flat written price with no hidden add-ons. Call (830) 529-7780 to schedule - estimates are free, and we provide a Free Second Opinion on any written quote you’ve already received.
Yes, we regularly install Owens Corning radiant barrier sheathing and foil products in Boerne and surrounding areas, and we source materials from their authorized distribution network. We also work with Johns Manville, GreenFiber, and other major manufacturers. We don’t claim exclusive status with any brand, so whether your existing system is Owens Corning or another make, we can assess, repair, or upgrade it.
We answer calls live 24/7 at (830) 529-7780, and we prioritize appointments for homes where a failed HVAC system has made radiant barrier installation part of an urgent envelope repair strategy. True emergencies in this category are rare, but we understand that 105°F attic heat with a broken compressor constitutes a habitability issue. We’ll give you an honest timeline and a written price before any work starts.
Every installation is backed by our 365-Day Done Right Promise - if it’s not done right, we make it right - plus the specific material warranties from the manufacturer, typically 10 years for foil products and 20 years for rigid sheathing. Under Haven Standard, you receive your written warranty before work begins, not after. The promise applies to all completed work, no exceptions.
Clear a path to your attic access and remove any stored items within 3 feet of the opening. If you have a competing quote, bring it - we’ll review it with you under our Free Second Opinion. We’ll handle everything else: drop cloths, lighting, ventilation assessment, and post-job cleanup. You don’t need to be home for the full installation, but we do need access and a signature on the written scope before we begin.
Schedule Your Radiant Barrier Installation Service in Boerne Today
Call (830) 529-7780 now and speak with a live person, any time of day. We’ll book your free estimate, deliver a written price before any work starts, and back every installation with documented blower-door results, a photo record, and our 365-Day Done Right Promise. No voicemail loops. No callback windows measured in business days. Just a flat price, a named technician, and a home that performs the way it should.
Written by Wes Okafor, Owner at Envelope Insulation Co., serving Boerne, Fair Oaks Ranch, and Scenic Oaks since 2016.