Fast, Reliable Blown-In Insulation Across Alamo Heights
Most blown-in insulation jobs in Alamo Heights run $1,800-$4,500 depending on attic size and whether wall cavities need dense-packing. Our crews are dispatched from our San Antonio office and typically arrive in Alamo Heights within 45 minutes to an hour. We know the 1920s-1950s housing stock here - the plaster-on-lath walls, the pier-and-beam foundations, the brick Tudor Revivals along Broadway - and we carry the low-pressure injection equipment that keeps original interiors intact. Call (830) 402-5240 for a written price before any work starts.
Why Topside Attic Insulation Schertz Is Alamo Heights’s Preferred Blown-In Insulation Company
We’ve worked enough Alamo Heights homes to know that standard blown-in methods fail here. The neighborhood’s dense enclave of pre-1960 custom construction - Spanish Colonial cottages near Loop 410, early ranch-styles off Harry Wurzbach - demands techniques most crews don’t carry: injection foam nozzles for plaster-on-lath, blower-door guided air sealing before insulation touches the attic floor, and hose runs calibrated for alley-load access where parking is tight.
Our reviews from Alamo Heights customers consistently mention two things: we show up when scheduled, and we leave documentation. Under Haven Standard, every job gets a written price before work starts, a Documented Photo Record when we leave, and before-and-after blower-door numbers on applicable jobs so you can verify the air-sealing result in a single figure. No voicemail loops - a live person answers calls 24/7.
Response time to Alamo Heights averages under an hour because our San Antonio office sits close to the Broadway corridor. We don’t ask you to wait for a callback window measured in business days.
Our Blown-In Insulation Services in Alamo Heights
Blown-In Cellulose
We use GreenFiber blown-in cellulose for most Alamo Heights attic top-ups and full installs. Cellulose performs well in our 150°F+ summer attics because it resists convection looping better than loose fiberglass at temperature extremes. For a typical 1,200-square-foot attic in Alamo Heights, a full cellulose install to R-38 runs $2,200-$3,400. We air-seal top plates, can lights, and penetrations first - always - then blow to density. The homeowner receives photos, blower-door readings if applicable, and a written scope.
Blown-In Fiberglass
Fiberglass works for Alamo Heights homeowners who need a non-cellulose option, typically due to moisture history or specific material preferences. We source from Owens Corning and Johns Manville - no proprietary lock-in. Blown fiberglass installs faster but requires more depth for equivalent R-value, so we calculate true coverage carefully on older Alamo Heights attics where headroom is limited by rafter height. Most jobs run $2,000-$3,200 for attics under 1,500 square feet.
Dense-Pack Wall Insulation
This is where Alamo Heights construction demands real expertise. The 1920s-1950s homes near Broadway and Loop 410 have solid masonry walls or narrow cavities behind plaster-on-lath that standard batt replacement cannot reach. We were called to a 1948 brick Tudor Revival off Broadway where the original plaster-on-lath walls had been cosmetically preserved, but the wall cavities behind them held nothing. Using dense-pack cellulose with low-pressure injection adapted for plaster, our tech filled the wall cavities without cracking the interior finish, then topped up the settled 1970s attic insulation with GreenFiber blown-in cellulose. The homeowner reported the back bedrooms held temperature through the next 100°F week, and we left the original plaster intact. Dense-pack wall jobs in Alamo Heights typically range $3,500-$6,500 depending on cavity count and accessibility.
Blown-In Top-Up
Many Alamo Heights attics contain original or haphazardly layered insulation from the 1940s-70s that has settled, been contaminated by roof leaks, or been tunneled through by HVAC upgrades. A blown-in top-up adds R-value without full removal, provided the existing material is dry and intact. We inspect first - documented with photos - then blow new material to achieve target depth. Top-ups in Alamo Heights run $1,800-$2,800 for most attics. If removal is needed, we quote that separately with a written price before any work starts.
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.
Trusted Brands We Service in Alamo Heights
We stock materials from Owens Corning, Johns Manville, GreenFiber, Icynene, and Demilec - sourced for availability, not exclusivity. For Alamo Heights jobs, this means no waiting on special orders when a pier-and-beam crawl space needs same-day vapor barrier or a plaster-wall dense-pack requires specific cellulose density. Our San Antonio office maintains inventory for common Alamo Heights configurations: high-density cellulose for wall injection, loose-fill fiberglass for standard attic work, and closed-cell foam for hybrid applications where air sealing precedes blow-in. You get the material that fits your home’s condition, not whatever we need to move.
Common Blown-In Insulation Problems We See in Alamo Heights Homes
- Plaster blowout from high-pressure drilling. Standard blown-in contractors using normal hose pressure crack and shatter plaster-on-lath walls in 1920s-1950s Alamo Heights homes. We use injection foam nozzles and reduced pressure specifically calibrated for this substrate.
- Insulation falling through pier-and-beam floor cavities. Unsealed subfloor cavities in Alamo Heights’s pier-and-beam homes let blown material drop through or get displaced by later HVAC duct runs. We seal first, then insulate - in that order.
- Uneven dense-pack from long hose runs. Alley-load access and tight parking on older Alamo Heights blocks force crews to run hoses from the street, reducing pressure at the nozzle. We size our equipment and adjust density settings for the actual hose length on your job.
- Settled, contaminated attic insulation from decades of layering. Many Alamo Heights attics contain 50-70 years of accumulated material - some original, some added poorly, some compromised by past roof leaks. We document what we find with photos before recommending add or remove-and-replace.
Pricing for Blown-In Insulation in Alamo Heights, TX
| Service | Typical Range in Alamo Heights |
|---|---|
| Blown-In Cellulose Attic (to R-38) | $2,200 - $3,400 |
| Blown-In Fiberglass Attic (to R-38) | $2,000 - $3,200 |
| Dense-Pack Wall Insulation | $3,500 - $6,500 |
| Blown-In Top-Up Over Existing | $1,800 - $2,800 |
| Insulation Removal + Full Replacement | $3,800 - $7,200 |
What moves the price: attic square footage, current insulation condition, accessibility (steep pitches and tight hatches add labor), and whether wall cavities need dense-packing. Every Alamo Heights job begins with a written price - Haven Standard Clause 1 - and we offer a Free Second Opinion on any competing written estimate. Call (830) 402-5240 for your exact quote.
We Also Serve Cities Near Alamo Heights
Our crews work throughout the metro corridor including Alamo Heights, Schertz, Cibolo, Universal City, and Selma. Dispatch and scheduling are coordinated from our San Antonio office. Whether you need a full attic overhaul or a targeted Blown-In Insulation top-up, the same written-price protocol and documented closeout apply.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Blown-In Insulation in Alamo Heights
Yes, when we use dense-pack cellulose with low-pressure injection nozzles specifically adapted for plaster-on-lath substrate. Standard high-pressure blown-in drilling cracks and blows out the layered plaster around the hole on 1920s-1950s homes near Broadway - we’ve seen the damage other crews leave behind. Our equipment runs at reduced pressure with injection foam nozzles that fill the cavity without hammering the wall surface. Call (830) 402-5240 and we’ll inspect your walls before quoting.
Yes, pier-and-beam construction creates floor-cavity opportunities that slab homes don’t have, but also risks if cavities are unsealed. Blown insulation can fall through gaps or be displaced by HVAC duct runs that were added decades after construction. We seal all subfloor penetrations and cavity openings before blowing, then verify density with visual inspection from the crawl space. The 365-Day Done Right Promise covers our pier-and-beam work.
We size our blower trucks for the actual hose run length from street to attic, and we adjust material density settings to compensate for pressure drop over long hoses. On older blocks where alley loading is the only option, we coordinate arrival time so you’re not waiting, and our crew carries protective floor runners for the hose path through your home. Haven Standard: Arrive on schedule, named technician, text when en route.
GreenFiber blown-in cellulose outperforms loose fiberglass in extreme attic heat because its higher density resists convection looping - the movement of hot air through insulation that reduces effective R-value. Cellulose also handles the humidity swings of San Antonio’s climate better than fiberglass when attic ventilation is marginal, which is common in pre-1960 Alamo Heights roof structures. We typically recommend cellulose for full installs and fiberglass only when specific conditions warrant.
Comprehensive air sealing plus dense-pack wall insulation and attic top-up to current R-38. Uri exposed what Alamo Heights homeowners already suspected: homes built for heat tolerance with almost no thermal buffer failed catastrophically in cold. The fix is not just more attic insulation - it’s sealing the building envelope first, then insulating, so conditioned air stays inside. We provide before-and-after blower-door numbers on every applicable job so you can verify the improvement. Call (830) 402-5240 for a written price on air sealing and blown-in insulation together.
Ready for a written price on blown-in insulation in Alamo Heights? Call (830) 402-5240. A live person answers 24/7. We’ll schedule inspection, provide a flat written quote with scope and warranty before any work starts, and leave you with a Documented Photo Record and blower-door verification.
Written by Wes Okafor, Owner at Topside Attic Insulation Schertz, serving Alamo Heights since 2016 under The Haven Standard.