Attic Insulation Replacement in Boerne, TX
Our Attic Insulation services for replacement in Boerne typically run between $1,800 and $4,200 for a standard single-story home, depending on square footage, existing material type, and how much air sealing the attic floor needs before new insulation goes in. Most jobs are scheduled and completed within a single visit. If you want a written price before anyone touches your attic, call (830) 529-7780 – that number reaches a live person, any time of day.
Replacement is not the same as topping off. When existing insulation has absorbed moisture, been contaminated by rodents, or simply compressed past the point where adding more material on top makes any sense, the old material has to come out first. At Topside Attic Insulation Boerne, we treat that distinction seriously. We pull and bag the old product, seal every air-leak point on the attic floor before new insulation is blown in, and document the whole job with photos and – on applicable jobs – before-and-after blower-door readings so you can see, in one number, what changed.
If you’re researching this alongside a broader project, our Attic Insulation in Boerne page covers the full range of attic insulation services we provide, including new installations, radiant barrier pairing, and energy audit coordination. This page focuses specifically on replacement – when it’s necessary, what the process looks like, and what it costs in the Boerne market.
Wes Okafor has led Topside Attic Insulation Boerne since we began operating under The Haven Standard in 2016. In that time, our crews have worked through more than 9,000 homes across the Texas Hill Country region. Boerne’s climate – hot, dry summers pushing attic temperatures past 140°F, combined with the occasional hard freeze that catches older blown-in fiberglass by surprise – creates a specific set of failure patterns we see repeatedly. The notes below are drawn from that fieldwork, not from a generic insulation manual.
When You Need Attic Insulation Replacement
Not every underperforming attic needs a full replacement. But the following situations almost always do. If more than one applies to your home, replacing rather than supplementing is nearly always the more cost-effective path over a five-year horizon.
- Rodent contamination or nesting material in the insulation. In Boerne and the surrounding Hill Country, roof rats and field mice enter attics through gaps at the roofline and along soffit runs. Once nesting material and droppings are mixed into blown-in fiberglass or cellulose, the insulation cannot be cleaned – it has to be removed. Adding new material on top compounds the problem and introduces an indoor air quality issue that no R-value improvement can offset.
- Moisture damage or mold visible in the existing batt or blown-in layer. Homes in Boerne that have had roof leaks – even minor ones repaired years ago – sometimes show wet, clumped insulation that has lost most of its thermal resistance. Wet fiberglass can read as low as R-2 per inch instead of its rated R-3.1. If you’re seeing staining on attic decking above compressed insulation, the material is almost certainly underperforming.
- Original fiberglass batts from before 2005 that were never air-sealed beneath them. Older Boerne homes – particularly those built in the late 1990s through early 2000s in neighborhoods like Herff Ranch and Cibolo Crossing – were frequently insulated with unfaced or kraft-faced batts laid directly over the drywall ceiling with no air sealing at top plates or can-light penetrations. The batts deteriorate and shift, but the bigger problem is the open pathways underneath. Replacement gives us access to seal those points before the new material goes in.
- Settled cellulose that has dropped well below its original depth. Cellulose insulation – often used in Boerne homes built through the 2000s – can settle 20 to 30 percent over its first decade. When measured depth reads under four inches in a home that was originally insulated to R-30, topping off is sometimes possible, but if the material is also showing signs of moisture exposure or compression near eave baffles, full replacement is the cleaner call.
- Evidence of prior DIY insulation laid over active air leaks. We see this regularly in Boerne attics where a previous owner added blown-in insulation over can lights, unsealed top plates, and open chase penetrations. The new material is sitting on top of the problem, not solving it. A blower-door test – a pressurization measurement that shows, in one number, how much conditioned air your building envelope is losing – usually confirms the issue in about 20 minutes.
- Attic square footage under 300 but R-value reading under R-19. If your attic is smaller and the existing insulation is thin enough that removing it and starting correctly costs roughly the same as adding depth, replacement is worth considering simply because it lets us do the air sealing step properly.
Our Attic Insulation Replacement Process
Every replacement job at Topside Attic Insulation Boerne follows the same sequence. The order matters: we do not add insulation before the attic floor is sealed, and we do not leave without a documented photo record of the finished installation.
- Written price and scope delivered before any work starts. Under Haven Standard Clause 1, you receive a flat written price and a written scope of work before a single tool comes off the truck. This includes what material is going in, what R-value we’re targeting, how we’re handling removal disposal, and what air sealing is included. No verbal estimates that shift at invoicing.
- Pre-job blower-door test (on applicable homes). We pressurize the building envelope and record the baseline CFM50 reading – that’s the cubic feet of air per minute leaking through your home’s shell at 50 pascals of pressure. This number lives in your job record. On homes where air sealing is a significant component of the scope, we run the test again after sealing to document what changed.
- Old insulation removal and disposal. We use commercial-grade vacuum equipment with HEPA filtration to pull existing blown-in material or bagged-out batts. All material is bagged and removed from the property. If rodent contamination is present, our attic cleaning protocol includes sanitizing the deck surface before any new material is installed.
- Air sealing – every top plate, can light, and penetration. This step is not optional and not an upsell. Before new insulation goes in, we seal the attic floor: top-plate gaps are foamed, recessed can lights get capped or caulked at the ceiling plane, HVAC penetrations are sealed, and any open chase runs are closed. The same crew that runs the vacuum runs the foam guns. There’s no handoff between an “air sealing team” and an “insulation team” – it’s one job, completed in order.
- New insulation installed to specified R-value. We blow in insulation – typically GreenFiber cellulose or Owens Corning blown fiberglass, depending on the application – to the depth specified in your written scope. For most Boerne homes, that target is R-38 to R-60, consistent with CPS Energy recommendations and the Texas-specific requirements under IECC 2021. Depth markers are installed so you can verify the installed depth yourself after we leave.
- Documented photo record and written warranty delivered at job close. Before the crew leaves, every section of the completed attic is photographed. Those images, along with your blower-door readings and the written scope marked as complete, are delivered to you the same day. The 365-Day Done Right Promise applies from that date: if it’s not right, we make it right – in writing, not as a verbal reassurance.
Attic Insulation Replacement Pricing in Boerne
Attic insulation replacement in Boerne runs between $1,800 and $4,200 for most single-family homes. The wide range reflects real variables – not vague hedging. Below is how those variables typically break down in the Boerne market.
| Home Size / Attic Sq Ft | Typical Replacement Range | Notes |
|---|---|---|
| Under 1,200 sq ft attic | $1,800 – $2,400 | Includes removal, air sealing, new blown-in to R-38 |
| 1,200 – 1,800 sq ft attic | $2,400 – $3,200 | Common for 2,000-2,800 sq ft homes in Boerne |
| 1,800 – 2,500 sq ft attic | $3,200 – $4,200 | Larger Hill Country homes; R-49 to R-60 targets |
| Rodent contamination add-on | $300 – $700 | Sanitizing, odor treatment, and sealed entry-point repair |
| Extensive can-light air sealing | $200 – $450 | Homes with 12+ recessed fixtures requiring individual caps |
What moves the price up
- Attic access points that require equipment repositioning (multiple separate attic sections are common in certain Hill Country designs)
- Existing material that has hardened, matted, or bonded to roof decking – slower extraction means more labor time
- Homes with spray foam insulation previously applied incorrectly over unfaced batts – removal is more involved
- Steeper roof pitches that reduce safe working clearance near eaves
What keeps the price at the lower end
- Standard attic geometry with a single access hatch and good standing clearance at the ridge
- Clean existing material (no contamination, no moisture damage) that vacuums out quickly
- Minimal penetrations – homes with LED recessed lighting and modern HVAC layouts tend to have fewer air-sealing points
Under Haven Standard Clause 1, you receive a written price before any work starts – flat, not an estimate range that adjusts at invoicing. If you have a competing written estimate, bring it to us: we offer a free second opinion on any written quote and will read it with you line by line. Call (830) 529-7780 to schedule a site visit or to ask questions before booking.
FAQs – Attic Insulation Replacement in Boerne
How much does attic insulation replacement cost in Boerne, TX?
Most attic insulation replacement jobs in Boerne run between $1,800 and $4,200 for a single-family home, with the exact price depending on attic square footage, the condition of existing material, and how much air sealing the attic floor needs. Rodent contamination, multiple attic sections, or a high number of recessed-light penetrations add to the total. At Topside Attic Insulation Boerne, you receive a flat written price before any work starts – not a range, not an estimate. Call (830) 529-7780 to schedule a same-week assessment.
Is it cheaper to add insulation on top or do a full replacement?
Attic Insulation Top-Up is cheaper upfront when the existing material is clean, dry, and not contaminated. Full replacement costs more initially but is the correct call when old insulation is contaminated, moisture-damaged, or sitting over unsealed air leak points – because new material blown over those conditions doesn’t fix the underlying performance problem. In homes where air sealing access is the deciding factor, replacement is often the better five-year investment. We’ll tell you which applies to your attic based on what we actually find, not based on which option produces a larger invoice.
Do you seal air leaks before blowing in the new insulation?
Yes – air sealing is completed before any new insulation goes in, on every job. Attic Baffles & Ventilation Prep, top plates, recessed can lights, HVAC penetrations, and open chase runs are all addressed first. This is not an optional add-on at Topside Attic Insulation Boerne; it’s the sequence the work follows. On applicable jobs, we run a blower-door test before and after the air sealing step so you have a documented number showing the change – not a verbal claim about how much improvement we think we made.
How long does attic insulation replacement take in Boerne?
Most replacement jobs in Boerne are completed in a single day. A standard 1,500-square-foot attic – removal, air sealing, and new Blown-In Attic Insulation – typically runs four to six hours with a full crew. Larger attics, homes with multiple separate attic sections (common in certain Hill Country architectural layouts), or jobs involving rodent sanitation work may extend to a second half-day. Your written scope will include a time estimate so you know what the day looks like before the crew arrives.
Why Boerne Homeowners Work with Topside Attic Insulation Boerne
Boerne sits at roughly 1,400 feet in the Hill Country, which means attic temperatures in July and August regularly exceed 140°F – hot enough to degrade certain adhesives and accelerate the compression of older blown-in fiberglass faster than the same product would compress in a coastal Texas climate. It also means that the thermal boundary between your living space and that superheated attic is one of the most consequential parts of your home’s envelope. Getting it wrong costs money every month, not just at the time of installation.
Since 2016, Wes Okafor and the crew at Topside Attic Insulation Boerne have completed more than 9,000 jobs across the region under The Haven Standard. Every one of those jobs started with a written price and ended with a documented record. The 365-Day Done Right Promise has applied to all of them. That structure isn’t marketing copy – it’s the operating procedure, and it’s why we don’t need urgency tactics or vague guarantees to close a job.
We work with materials from Owens Corning, GreenFiber, Icynene, and other established manufacturers – no proprietary product lock-in, no upselling you toward a more expensive material when a less expensive one does the same job in your specific attic geometry. The written scope you receive names the product, the R-value target, and the air-sealing scope so you can compare it directly against any competing quote.
If your attic needs a replacement – or if you’re not sure whether it does – the right next step is a site assessment, not a guess based on square footage. Call (830) 529-7780 to schedule one. A live person answers, any time.
Written by Wes Okafor, Owner at Topside Attic Insulation Boerne, serving Boerne since 2016.