Trusted Attic Insulation for Boerne Homeowners
Most attic insulation jobs in Boerne run between $1,800 and $4,500 depending on square footage, existing insulation condition, and whether air sealing is needed first. We’re typically on-site within 24 to 48 hours of your call, and same-day service is available for homes with no insulation or failed insulation creating immediate comfort or moisture problems. Call (830) 529-7780 and a live person will answer, 24/7.
We’ve sealed and insulated more than 9,000 homes since 2016, every one starting with a written price and ending with a documented record. In Boerne’s Hill Country climate, where summer attic temperatures regularly exceed 140°F and winter nights dip below freezing, the attic is where your home loses or gains most of its conditioning energy. We treat air sealing as a hard prerequisite, not an upsell. That means we seal top plates, can lights, plumbing and electrical penetrations, and any bypasses before a single bag of insulation goes in. Then we publish before-and-after blower-door numbers so you can verify the performance change in a single figure.
What Our Attic Insulation Service Includes
Blown-In Attic Insulation
Blown-in insulation, also called loose-fill, is cellulose or fiberglass blown through a hose to create a continuous thermal blanket across irregular attic floors and around obstructions. In Boerne, we install it most often in homes built between 1980 and 2010 where original attic batt insulation has settled or was never installed to full depth. Our crews run a blower-door test before and after, and we only blow after sealing every penetration we can access. Most jobs use Owens Corning or GreenFiber products, selected based on your roof structure and ventilation profile.
Attic Batt Insulation
Batt insulation comes in pre-cut fiberglass or mineral wool panels fitted between joists or rafters. We recommend batts for new construction, finished attic conversions, or areas where we need precise control around electrical work or HVAC platforms. In Fair Oaks Ranch and Scenic Oaks, we see a lot of bonus-room attics where batts are the only practical choice because of headroom constraints. Every batt job gets the same air-sealing prep, and we photograph every bay before closing it up.
Attic Insulation Top-Up
An attic insulation top-up adds insulation over existing material that is in decent shape but below current Department of Energy recommendations for our climate zone. In Boerne, that’s R-38 to R-60 for attics. We see this need frequently in homes built during the 2005 to 2015 building boom where builders met minimum code with R-30 or less. We test what you have, document its condition with photos, and add only what’s needed. No removal means lower cost and less disruption. Most top-ups finish in a single day.
Attic Insulation Replacement
Attic insulation replacement means removing degraded, contaminated, or water-damaged insulation before installing new material. We handle this when insulation has been compressed by storage, compromised by roof leaks, or soiled by rodent activity. In Timberwood Park and Lakehills, we’ve replaced insulation in homes where raccoons or roof rats nested over multiple seasons. The removal is bagged and hauled, the deck is sanitized, air sealing is completed, and new insulation goes in. You get photos of the empty deck and the finished job.
Attic Baffles & Ventilation Prep
Baffles, or vent chutes, keep soffit vents open so outside air can flow under the roof deck and out through ridge or gable vents. Without them, blown insulation blocks intake vents and creates moisture problems. In Boerne’s humid subtropical climate, that’s a recipe for mold. We install attic baffles and ventilation prep at every soffit vent before insulating, verify airflow with a smoke pencil, and document the installation. This step is non-negotiable on our jobs. Haven Standard Clause 3: if we can’t ventilate it right, we don’t insulate it.
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 Attic Insulation
We source materials from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. Owens Corning fiberglass batts and loose-fill are our most common specification for standard attic floors in Boerne homes under 3,500 square feet. The product has consistent density, and we’ve tracked performance across enough installations to predict R-value retention accurately in our climate. Icynene open-cell spray foam is what we specify for conditioned attics or cathedral ceilings where moisture management and air barrier continuity are critical, particularly in the older stone and stucco homes common in Alamo Heights and Terrell Hills. Demilec closed-cell foam comes in for crawl space rim joists or areas where space is tight and we need maximum R-value per inch.
GreenFiber cellulose is our preference for top-ups and netted blown applications where homeowners want a recycled-content option with good fire resistance. We’ve installed it in hundreds of Boerne-area homes since 2016, and it performs well in our combination of heat, humidity, and occasional hard freeze. Whether your existing insulation is Owens Corning, GreenFiber, or any other make, we can assess it, match or improve it, and document the result. We don’t carry proprietary product lock-ins, so our recommendation is based on your structure, not our inventory.
Signs You Need Attic Insulation Right Now
- Your upstairs rooms are 8 to 15 degrees hotter than downstairs in summer. This is the most common call we get from Boerne homeowners, especially in two-story homes built between 2000 and 2015. Heat radiating through an under-insulated attic floor overwhelms the HVAC capacity upstairs. The system runs constantly, the downstairs over-cools, and your bill climbs. A blower-door test and thermal imaging will show exactly where the attic is bleeding conditioning into the roof.
- Your energy bill spikes every July and August despite no change in thermostat setting. In the Hill Country, a poorly insulated attic can add 30% to cooling costs. We see this pattern in homes across Leon Valley, Castle Hills, and Helotes. The attic is acting as a solar collector, and your ductwork, if it’s up there, is trying to push 55°F air through a 130°F environment. Insulation and duct sealing together fix it.
- You can see floor joists through your existing insulation. Insulation settles. Fiberglass batts lose 10 to 25% of their labeled R-value over 15 to 20 years from compression and gravity. If the pink or yellow material is below the top of the joists, you’re under-insulated by current standards. We measure depth, calculate current R-value, and show you the gap.
- You’ve had ice dams, roof leaks, or visible mold in the attic. These are moisture problems caused by warm, humid air leaking from the conditioned space into a cold attic in winter, or by blocked ventilation in summer. In Boerne, we don’t get heavy snow, but we do get freeze-thaw cycles that create condensation on nails and sheathing. Air sealing is the fix; insulation alone makes it worse.
- Your home was built before 2015 and has never had an attic assessment. Texas energy code didn’t require R-38 in attics until the 2015 IECC cycle, and enforcement was inconsistent in Kendall and Bexar counties. Most pre-2015 homes we inspect in Boerne, Bulverde, and San Antonio are under-insulated by 30 to 50%. A free assessment takes 45 minutes and gives you a written scope and price.
Our Attic Insulation Process - Step by Step
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Schedule and arrival. Call (830) 529-7780 or text us. A live person answers. We confirm a date and two-hour window, then text you when your technician is en route. Under Haven Standard: Arrive on schedule, you get a named technician. No callback windows measured in business days.
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Attic inspection and blower-door test. We run a blower-door test, a pressurization reading that shows, in one number, how much air your building envelope is losing. Typical pre-work readings in Boerne homes range from 3,500 to 6,000 CFM50. We photograph existing insulation depth, condition, and any penetrations or bypasses. Thermal imaging identifies hidden air leaks around chimneys, duct chases, and top plates.
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Written scope and price. Before any work starts, you receive a written scope detailing every air-sealing target, insulation type and depth, ventilation prep, and cleanup step. The price is flat. The warranty is written. This is Haven Standard Clause 1. No work begins until you approve both documents.
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Air sealing and preparation. We seal top plates, electrical and plumbing penetrations, can lights, bath fan housings, and any accessible bypasses. Baffles go in at soffit vents. If we’re replacing insulation, removal and deck sanitation happen here. Every step is photographed.
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Insulation installation and verification. We install to the specified depth and density, verify even coverage with depth probes, and run a second blower-door test. You receive before-and-after CFM50 readings, a photo record of the completed work, and your written warranty. The 365-Day Done Right Promise applies from this moment.
How Much Does Attic Insulation Cost in Boerne?
Attic insulation in Boerne typically costs between $1,800 and $4,500 for residential jobs, with most falling in the $2,200 to $3,400 range. Here’s how common scenarios break down:
- Attic insulation top-up in a 2,000-square-foot home with accessible attic and good existing material: $1,800-$2,600
- Blown-in insulation with air sealing in a 2,500-square-foot home with moderate penetrations to seal: $2,400-$3,600
- Full insulation replacement including removal, deck sanitation, air sealing, and new blown-in material: $3,200-$4,800
- Attic batt installation in a finished attic or new construction with open framing: $2,600-$4,200
- Spray foam insulation for conditioned attics or cathedral ceilings: $4,500-$8,500 depending on square footage and foam type
Several factors move the price within these ranges. Attic accessibility matters: a hatch in a closet versus a pull-down stair versus a scuttle hole in a garage all affect labor time. The amount of air sealing required is usually the biggest variable. A home with 40 can lights, multiple bath fans, and a chase running to the basement takes longer to seal than one with minimal penetrations. Existing insulation condition determines whether we top up or remove. Roof pitch affects mobility and safety setup time.
To avoid overpaying, get a written scope that specifies R-value, material type, air-sealing targets, and ventilation prep. A quote that only says “insulate attic” leaves room for shortcuts. We provide a Free Second Opinion on any written estimate. Bring us a competing quote and we’ll read it with you, line by line. Our estimates are free, include the blower-door test, and come with no obligation.
Attic Insulation Near Boerne - Our Service Area
We work throughout Kendall County, Bexar County, and the surrounding Hill Country, with typical drive times of 15 to 45 minutes from our Boerne base. That covers Attic Insulation in Fair Oaks Ranch, Attic Insulation in Scenic Oaks, Helotes, Timberwood Park, Lakehills, Bulverde, Leon Valley, Castle Hills, San Antonio, Alamo Heights, and Terrell Hills. Response time for standard scheduling is 24 to 48 hours; same-day service is available for no-insulation or failed-insulation emergencies. We don’t charge extra for travel within this radius.
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 - Attic Insulation in Boerne
Attic insulation is a thermal barrier, typically fiberglass, cellulose, or foam, installed between your conditioned living space and the unconditioned attic. In Boerne’s climate, where attic temperatures exceed 140°F in summer and outdoor winter lows reach the mid-20s, it is the single most cost-effective measure for reducing heating and cooling loads. Without adequate insulation, your HVAC equipment works harder, your bills rise, and comfort suffers. Call (830) 529-7780 for a free assessment of your current level.
Most attic insulation jobs in Boerne finish in one day. A standard top-up or blown-in installation with air sealing takes 4 to 6 hours. Full replacement with removal and deck sanitation typically runs 6 to 8 hours. Conditioned attic spray foam jobs may extend to two days depending on square footage and cure time. We give you a written time estimate with your scope. Call (830) 529-7780 to schedule.
Most residential attic insulation jobs in Boerne cost between $1,800 and $4,500, with the majority landing at $2,200 to $3,400. Top-ups cost less; full replacement with air sealing costs more. Spray foam for conditioned attics runs higher. We provide a flat written price before any work starts, and our estimates are free. Call (830) 529-7780 for your exact quote.
Yes. We install Owens Corning fiberglass batts and loose-fill regularly, and we specify Icynene open-cell spray foam for conditioned attics and cathedral ceilings where air sealing and moisture management are critical. We’ve worked with both product lines since 2016 and source directly without proprietary lock-in. Call (830) 529-7780 to discuss which material fits your home.
Yes. Same-day service is available for homes with no insulation, failed insulation creating immediate comfort or moisture problems, or post-remediation situations where the home cannot be conditioned safely. A live person answers calls 24/7. Call (830) 529-7780 and we’ll dispatch a crew as quickly as possible.
All completed work is covered by our 365-Day Done Right Promise. If it’s not done right, we make it right. You also receive a written warranty document before any work starts, specifying material and labor coverage. The Haven Standard requires both: a written scope and a written warranty. Call (830) 529-7780 to request a sample warranty document.
Clear a path to the attic access and remove any stored items you need from the attic space. We handle everything else: floor protection, lighting, ventilation setup, and cleanup. If we’re doing a replacement, we ask that you cover or remove fragile items in rooms directly below the access hatch. We’ll confirm any specific prep in writing when we schedule. Call (830) 529-7780 to book your installation date.
Schedule Your Attic Insulation Service in Boerne Today
Call (830) 529-7780 now. A live person answers 24/7, and we’ll schedule your free assessment with a written price before any work starts. Every job comes with a Documented Photo Record, and on applicable work, before-and-after blower-door numbers so you can see the performance change you paid for. The 365-Day Done Right Promise applies to everything we complete. No obligation, no voicemail loops.
Written by Wes Okafor, Owner at Topside Attic Insulation Boerne, serving Boerne since 2016.