Attic Insulation Near You in Boerne, TX
If you’re searching for attic insulation near you and you’re in or around Boerne, TX, you’ve found the right crew. Envelope Insulation Co. – Topside Attic Insulation Boerne serves homeowners throughout the Hill Country corridor, and we answer every call with a live person – no voicemail, no callback window measured in business days. Before any work starts, you get a flat written price and a documented scope. That’s not optional; it’s how we operate under The Haven Standard on every single job.
Most attic insulation jobs we complete in the Boerne area run between $1,400 and $3,200, depending on square footage, current R-value, air-sealing scope, and attic access conditions. Homes in the 1,800-to-2,400 square foot range – common in neighborhoods like Esperanza and Cordillera Ranch – typically land in the $1,600 to $2,500 band when blown-in fiberglass or cellulose is the right fit. Spray foam applications run higher. You’ll have the exact number in writing before anyone opens a hatch.
We serve Boerne and the surrounding communities from our local base. Call (830) 529-7780 and a live person picks up, any hour.
Fast, Local Attic Insulation
Speed matters when your HVAC is running six hours a day just to keep up. Boerne summers push attic temps well past 140°F, and an under-insulated attic floor turns that heat into a direct load on your living space. We schedule most Boerne-area jobs within two to three business days, and we can often fit urgent situations into the current week’s route.
Every job begins with a blower-door test – a pressurization reading that produces a single CFM50 number showing exactly how much conditioned air your envelope is losing – before we touch the insulation. That’s not a sales step; it tells us where to seal first. We complete all air sealing of top plates, can lights, and penetrations before any insulation is added. The sequence matters: blown-in insulation over an unsealed attic floor locks in the leaks. We don’t do that.
When the crew leaves, you receive a documented photo record and, on applicable jobs, before-and-after blower-door readings so you can see the actual performance change – in numbers, not adjectives. Our 365-Day Done Right Promise covers everything we complete: if it’s not right, we make it right, in writing.
Areas We Cover

Our trucks run a regular route through the Hill Country and the northwest San Antonio metro. The communities we serve most frequently include Boerne, Fair Oaks Ranch, Scenic Oaks, Helotes, Timberwood Park, Lakehills, Bulverde, and Leon Valley. Each of these areas has its own attic conditions worth knowing about.
In Fair Oaks Ranch and Timberwood Park, we regularly encounter older blown-in insulation that has settled to R-11 or lower – well below the R-38 minimum the Department of Energy recommends for this climate zone – which often calls for Attic Insulation Replacement. In Helotes, many homes built in the 1990s have inadequate can-light sealing; the fixtures act as direct chimneys between the attic and the conditioned ceiling. In Scenic Oaks and Bulverde, we’ve seen attic floors with no vapor control at all, which compounds heat gain in July and August. In Lakehills, homes near the Medina Lake corridor tend to have crawl-space and attic conditions that interact – something we address together rather than in isolation.
If you’re not sure whether your address falls in our service area, call (830) 529-7780. A live person will give you a straight answer.
For homeowners specifically in the city limits, our Attic Insulation in Boerne page goes deeper on local code, permit requirements, and the climate-zone specifics that affect the right R-value for your home. And if you want context on our full building-envelope approach before booking, the home page covers the complete service line.
What to Expect: The Job From Start to Finish
We describe the documentation you’ll receive before we arrive, because that’s what “leaving looks like” – and you should know it in advance.
Before Work Starts
- Written flat price – a specific dollar figure, not a range subject to revision after the crew shows up. Haven Standard Clause 1 is non-negotiable: no work starts without it.
- Written scope – what we’re doing, what materials we’re using (Owens Corning, Johns Manville, Knauf, GreenFiber, CertainTeed, Icynene, Demilec, or Rockwool depending on application), and what’s explicitly not included.
- Written warranty – the 365-Day Done Right Promise in writing, handed over before the first tool comes out.
- Named technician + text on the way – Under Haven Standard: Arrive on Schedule, you know who is coming and get a text when they’re en route. No waiting in a four-hour window without information.
During the Job
- Blower-door baseline reading taken and recorded.
- Air sealing of all top-plate gaps, penetrations, and recessed can lights completed first – before insulation is touched.
- Insulation installed to the agreed R-value and documented with depth markers visible in photos.
- Photo record taken throughout, not just at the end.
When the Crew Leaves
- Post-sealing blower-door reading taken and recorded alongside the baseline.
- Full documented photo record delivered to you.
- Before-and-after blower-door numbers published on applicable jobs – so you have a verifiable figure, not a feeling.
- Written warranty in hand.
Why the Sequence Matters in Boerne’s Climate

Boerne sits in IECC Climate Zone 2B, which means long, hot summers and mild winters – a combination that puts attic radiant heat and air infiltration near the top of every energy auditor’s problem list. The practical consequence is this: sealing matters as much as R-value here. A well-insulated attic floor with unsealed penetrations still allows stack-effect air movement every time the HVAC cycles. You’ve added resistance to conductive heat transfer but done almost nothing about convective loss.
That’s why we run the blower-door test first. On a typical 2,000 square foot Boerne home with original 1990s construction, we commonly see baseline readings in the 3,500-to-5,000 CFM50 range. After sealing top plates and can lights, that number often drops 20-to-35 percent before a single bag of insulation is blown. The insulation then performs closer to its rated R-value because conditioned air isn’t bypassing it through gaps.
We’re also one of the few contractors in the Boerne area who will put both numbers on paper and hand them to you. Most companies skip the blower-door step entirely. Some perform it and don’t share the results. We publish them because the number is the proof.
Attic Insulation Materials We Use
Material selection in a Boerne attic depends on three things: existing conditions, attic access, and whether moisture management is a concern. Here’s how we generally approach it.
Blown-In Fiberglass
Products from Owens Corning and Johns Manville install quickly in accessible attics and perform well in dry climates. For most Boerne homes with a standard attic hatch and a floor that can be walked, Blown-In Attic Insulation to R-38 or R-49 is the most cost-effective path. It doesn’t settle significantly over time, and it’s non-organic – meaning it doesn’t support mold growth even if humidity spikes.
Blown-In Cellulose
GreenFiber cellulose is a recycled-content option we use when a customer has sustainability priorities or when the existing material is cellulose and an Attic Insulation Top-Up makes sense. It’s treated for fire resistance and pest deterrence. In Boerne’s drier climate, moisture absorption is rarely a concern, but we check attic humidity before specifying it.
Spray Foam
Icynene and Demilec open-cell or closed-cell foam is the right call for unvented attic assemblies – situations where the roof deck itself needs to be the thermal and air boundary rather than the attic floor. Homes in Timberwood Park and parts of Cordillera Ranch with cathedral ceilings or HVAC equipment in the attic often benefit from this approach. It’s a higher upfront cost, and we’ll tell you plainly whether it’s justified for your specific situation.
Mineral Wool / Rockwool
For attics with high fire-risk concerns or unusual thermal mass requirements, Rockwool batts and boards offer performance characteristics that fiberglass doesn’t. We specify it when the job calls for it – not as a default.
A Note on Radiant Barriers

Boerne’s solar exposure makes radiant barrier installation worth evaluating on most homes without an existing barrier. A properly installed radiant barrier on the underside of the roof deck can reduce attic temperatures by 20-30°F on peak summer days, which reduces the heat load that your insulation has to resist. We install radiant barriers as a separate scope item with its own written price – it’s not bundled in as an assumed add-on, and we won’t pressure you into it. The energy audit data will show whether it pencils out for your home.
FAQs: Attic Insulation Near Me in Boerne
How fast can you get to my Boerne home?
Most Boerne-area jobs are scheduled within two to three business days of your initial call. Urgent situations – an HVAC that’s running continuously in July heat or visible moisture damage after a roof event – are flagged for the earliest available slot, often within the current week. Call (830) 529-7780 and a live person will give you a realistic timeline on the spot, not a form-fill that generates a callback two days later.
Do you serve my area outside Boerne city limits?
Yes. Our regular route covers Fair Oaks Ranch, Scenic Oaks, Helotes, Timberwood Park, Lakehills, Bulverde, Leon Valley, and the broader Kendall and Bexar County Hill Country corridor. If you’re unsure whether your address is in range, call (830) 529-7780 – we’ll confirm immediately.
How much does attic insulation cost near Boerne, TX?
Most attic insulation jobs in the Boerne area run between $1,400 and $3,200 for a standard single-story home. A 2,000 square foot home adding blown-in fiberglass to R-38 with basic air sealing typically lands in the $1,600-$2,200 range. Spray foam assemblies for unvented attics or homes with HVAC equipment in the attic space run higher – often $2,800 to $5,000+ depending on scope. You get an exact flat price in writing before any work starts, every time. Call (830) 529-7780 to schedule a free on-site estimate.
Can I reach someone after hours or on weekends?
Yes. A live person answers at (830) 529-7780 around the clock, including weekends and holidays. We don’t route after-hours calls to voicemail or promise a next-business-day callback. If you have a question at 9 PM on a Saturday, you’ll reach someone who can answer it.
Do you offer a second opinion on another contractor’s quote?
We do, and it’s free. Bring us any written estimate and we’ll read through it with you – line by line, material by material. We’ll tell you if the specified R-value is appropriate for Boerne’s climate zone, whether the air-sealing scope is adequate, and whether the material pricing is consistent with what the local market bears. No pressure, no fee. Under Haven Standard: Free Second Opinion on Any Written Estimate, that’s a standing offer.
What documentation do I receive after the job?
Every completed job includes a documented photo record – depth markers in the insulation, sealed penetrations, attic access conditions before and after. On all applicable jobs, you also receive before-and-after blower-door readings: two CFM50 numbers, one taken before sealing and one after, so you can verify the air-sealing result with an actual measurement rather than taking our word for it. The written warranty covering the 365-Day Done Right Promise is delivered to you before work starts, not after.
Key Takeaways

- Boerne-area attic insulation typically costs $1,400-$3,200; you get the exact number in writing before work starts.
- We seal first – top plates, can lights, penetrations – then insulate. That sequence is non-negotiable and affects real-world performance.
- Before-and-after blower-door numbers are documented and delivered on every applicable job.
- We serve Boerne, Fair Oaks Ranch, Scenic Oops Ranch, Scenic Oaks, Helotes, Timberwood Park, Lakehills, Bulverde, and Leon Valley.
- Live person answers at (830) 529-7780, any hour, any day.
- The 365-Day Done Right Promise and Free Second Opinion on Any Written Estimate are standing commitments, in writing.
- Wes Okafor leads every job under The Haven Standard – independently operated, documented from first price to final photo.
Get a Written Price for Your Boerne Attic
If your home is in Boerne or any of the surrounding Hill Country communities, the next step is a free on-site estimate. We’ll look at your current insulation depth, assess air-sealing needs, and give you a flat written price before we leave your driveway – no follow-up call required to get the number. Call (830) 529-7780 to schedule. A live person will pick up, confirm your address is in our service area, and get you on the calendar. The written price is the starting point, not something you have to ask for.
Written by Wes Okafor, Owner at Topside Attic Insulation Boerne, serving Boerne and nearby areas since 2016.
What Our Customers Say
"The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R."They photographed rodent damage in the old insulation that we had no idea about, and priced the exclusion work separately so we could decide."
- Harriet N."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P.