Blown-In Attic Insulation in Converse, TX

Blown-In Attic Insulation in Converse, TX

Our Attic Insulation services use blown-in loose-fill material mechanically distributed across your attic floor - the most practical way to bring an under-insulated Converse home up to the R-38 to R-60 depth that South Texas heat demands. Most jobs run between $1,200 and $2,800, take a single day, and deliver a measurable reduction in air leakage when air sealing is done first. That last part is the piece most contractors skip.

At Topside Attic Insulation Converse, we don’t blow insulation over an unsealed attic floor. Every job starts with air sealing – top plates, recessed lights, plumbing penetrations, and every other gap where conditioned air escapes before the first pound of material goes in. Then we blow. That sequence matters in Converse’s climate, where a home can lose more conditioned air through an attic floor full of gaps than through every window and door combined. If you’d like to talk through your specific situation, call us at (830) 420-0953 – a live person picks up, any time of day.

For context on the full scope of what we do in the attic, our Attic Insulation in Converse page covers removal, replacement, radiant barriers, and the other services that often pair with a blown-in job.

When You Need Blown-In Attic Insulation

Not every home in Converse needs the same intervention, but a few patterns come up repeatedly in this part of Bexar County. Here’s what typically prompts a call:

• Your upstairs rooms won’t cool down, even with the AC running hard. Homes in the Converse Lake and Maplewood Heights neighborhoods built before 2005 often have four to six inches of settled fiberglass batts – roughly R-11 to R-15 – where current code calls for R-38 minimum. The deficit shows up first on the second floor in June.
• Your energy bills climbed noticeably after a roof replacement. Roofers sometimes disturb or compress attic insulation during a re-roof. Compressed batts lose R-value quickly, and the damage isn’t visible from the living space.
• You’re seeing wide temperature swings between rooms. When one bedroom runs 5-8 degrees warmer than the rest of the house, the attic floor directly above it is usually the culprit – either thin coverage or an air-sealing gap that’s letting conditioned air escape at that specific spot.
• A home energy audit flagged your attic as the primary loss point. Blower-door readings – a pressurization test that measures, in one number, how much air your building envelope is losing – frequently identify the attic floor as responsible for 30-40% of total air leakage in Converse-area homes from the 1990s and early 2000s.
• Your home is approaching a sale and you need documented improvements. A written scope, before-and-after blower-door numbers, and a Documented Photo Record are included on every Topside job – exactly the kind of evidence a buyer’s inspector or energy rater wants to see.
• You already have blown-in insulation but it’s over 15 years old. Cellulose and fiberglass loose-fill both settle over time. What started at R-38 may have drifted to R-28 or lower, particularly in attics that experienced roof leaks or pest activity.

Our Blown-In Attic Insulation Process

We follow the same sequence on every job, regardless of home size or neighborhood. The order is not negotiable – sealing before blowing is what separates a performance improvement from a cosmetic one.

1. Pre-work assessment and written price. Before anyone touches your attic, we inspect the space: measure existing depth and R-value, note air-leakage points, photograph current conditions, and check for moisture, pest damage, or previous insulation issues that would affect the job. Under Haven Standard Clause 1, you receive a flat written price and a written scope before any work begins. No surprises, no verbal estimates that shift at invoice time.
2. Blower-door baseline reading. On applicable jobs – which includes virtually every home in Converse where we’re adding insulation over an existing attic floor – we run a blower-door test before sealing. That reading establishes your starting point in CFM50 (cubic feet per minute at 50 pascals of pressure). It’s the number that makes the result provable.
3. Air sealing of the attic floor. This step takes longer than the blowing itself, and it’s where most contractors cut corners. We seal top plates (the framing members at the top of interior walls where air moves freely between floors), recessed can lights – a major leakage point in homes built before 2012, when airtight fixtures became standard – plumbing stack boots, electrical penetrations, and any other opening in the attic floor. Materials used depend on gap size: two-part foam for larger openings, fire-rated caulk for smaller ones.
4. Blown-in installation to target depth. We install loose-fill to reach your target R-value – typically R-38 to R-49 for Converse’s climate zone, or higher if you’re aiming for current IECC code compliance. Depth markers go in so you can verify coverage yourself after we leave. Depending on the job, we’ll use GreenFiber cellulose or Owens Corning ProPink blown fiberglass – both are appropriate for Texas attics; the choice depends on your existing material, moisture history, and target R-value.
5. Post-sealing blower-door confirmation. After the air sealing is complete (and before we blow), we run a second blower-door reading to document the change. That number – the CFM50 reduction – goes on your written record. “We significantly reduced your air leakage” is not something we say; we give you the numbers and let you draw that conclusion.
6. Documented Photo Record and close-out paperwork. We photograph depth at multiple points in the attic, the sealed penetrations, and the depth markers. That photo record, combined with your blower-door readings, written scope, and 365-Day Done Right Promise documentation, is what you receive before we leave your property.

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Blown-In Attic Insulation Pricing in Converse

Most blown-in attic insulation jobs in Converse run between $1,200 and $2,800 for a typical single-story or two-story home of 1,400 to 2,600 square feet. Here’s how much attic insulation costs in 2026 for Converse, TX:

Several factors push a job toward the higher end of those ranges:

• Attic access and pitch. Low-pitch roofs and tight access hatches slow the work. Homes in parts of Converse with ranch-style construction from the 1970s and 1980s often have minimal clearance near the eaves, which affects labor time.
• Number of penetrations to seal. A home with 20 recessed can lights in the ceiling below the attic will take longer to air-seal than one with zero. Each light is its own leakage point.
• Target R-value. R-49 requires more material than R-38. If you’re targeting a specific energy code tier or a utility rebate threshold, we’ll spec the depth accordingly.
• Existing insulation condition. If the old material is contaminated, compressed, or wet, removal before the blown-in job adds cost but is sometimes necessary for the new insulation to perform correctly.
• Blower-door testing. This is included on applicable jobs – it’s not a separate line item you’ll see added at invoice time.

Under Haven Standard Clause 1, your written price is flat – what we quote is what you pay. If you have a competing written estimate, bring it to us. We’ll read it with you as part of our Free Second Opinion offer and tell you plainly what it includes and what it doesn’t.

FAQs – Blown-In Attic Insulation in Converse

How much does blown-in attic insulation cost in Converse, TX?

Blown-in attic insulation in Converse typically costs between $1,200 and $2,800 for a home in the 1,400 to 2,600 square foot range, depending on attic square footage, existing insulation condition, target R-value, and how many air-leakage points need sealing before installation. A smaller top-up job on an already-sealed attic can run as low as $800. Your written price is established before any work starts – that’s not optional, it’s how every Topside job works. Call (830) 420-0953 and we’ll walk through your specific attic to give you a number, not a range.

What R-value do I need for blown-in insulation in Converse?

Current IECC code for Converse’s climate zone calls for a minimum of R-38 in existing homes and R-49 to R-60 in new construction. If your attic has four to six inches of settled fiberglass – common in homes built in the 1990s throughout the Converse Lake area – you’re likely sitting at R-11 to R-15, well below code minimum. We measure actual depth at multiple points during the pre-work assessment and spec the blown-in depth to reach your target. Most Converse homeowners aiming for meaningful energy performance land between R-49 and R-60.

Is blown-in insulation better than batt insulation for an attic?

For existing attics, blown-in insulation covers irregular framing, wires, and joists more completely than Attic Batt Insulation, which has to be cut and fitted around every obstruction. Gaps in batt coverage – even small ones – create thermal bridges where heat moves through the ceiling unimpeded. Blown-in material fills those gaps by nature of how it’s installed. That said, material choice matters less than air sealing does. A perfectly installed R-49 blown-in attic with unsealed penetrations will underperform a properly air-sealed attic with R-38 batts. That’s why we seal before we blow, every time.

Can I install blown-in attic insulation myself in Converse?

Big-box stores rent blowers, so technically yes – but the DIY path skips the step that drives most of the performance gain. Most homeowners who rent a blower and add insulation do so without sealing the attic floor first, which means they’re covering up the leaks rather than stopping them. The blown-in depth also needs to be uniform to hit the rated R-value, and attic access around eave areas is awkward and physically demanding. We regularly see homes in Converse where a previous owner added insulation that sits at the right depth in the center of the attic and half that depth near the eaves. If you want a documented result – blower-door numbers, photo record, written warranty – it’s a professional job. If you’d like a second opinion on a quote you’ve already received, that’s free, and we’ll explain exactly what it includes.

Why Converse Homeowners Work With Topside Attic Insulation

Converse sits in a climate that doesn’t forgive under-insulated attics. Summers regularly push attic temperatures above 140 degrees Fahrenheit, and homes built in the rapid development years of the 1980s and 1990s – a large share of the housing stock in neighborhoods like Converse Oaks, Heritage Hills, and around Judson Road – were built to the energy codes of that era, not today’s. The gap between what those homes have and what they need is where energy bills accumulate.

Since 2016, Wes Okafor and the Topside team have worked through more than 9,000 homes in the San Antonio metro area, every one with a written price before the job started and a Documented Photo Record when it closed. That volume means we’ve seen the full range of what Converse attics look like: knob-and-tube wiring that changes the air-sealing approach, Attic Baffles & Ventilation Prep for attic HVAC equipment that must be worked around carefully, and moisture intrusion from flashing failures that needs to be addressed before any insulation goes in.

We source material from GreenFiber, Owens Corning, Johns Manville, and Knauf, matching the product to the job rather than defaulting to whatever a supplier relationship makes easiest. And if a job isn’t right within 365 days, we make it right – that’s the Done Right Promise, in writing, before anyone starts.

If you’re researching the full scope of attic work – not just blown-in insulation – our parent page covers the complete picture: Attic Insulation in Converse.

We also service homeowners across the broader San Antonio area, including those looking for general home energy improvement guidance covered on our home page.

Key Takeaways

• Blown-in attic insulation in Converse runs $1,200 to $2,800 for most homes, depending on size, existing conditions, and target R-value.
• Air sealing comes before insulation – always. Sealing top plates, can lights, and penetrations is what makes the R-value meaningful.
• Before-and-after blower-door readings document the air-sealing result in a single measurable number on every applicable job.
• Your written price, written scope, Documented Photo Record, and 365-Day Done Right Promise are delivered before and after every job – not available on request.
• Most Converse homes built before 2005 are significantly under-insulated by current standards. R-38 is the floor; R-49 to R-60 is where real performance gains show up.
• A live person answers at (830) 420-0953, any time. No voicemail queue, no callback window.

Ready to find out where your attic stands? Call Topside Attic Insulation Converse at (830) 420-0953 for a free estimate. We’ll assess your attic, give you a written price, and show you – in blower-door numbers – what the work will actually do.

Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving Converse.