Insulation in Houston, TX
Spray foam insulation in Houston solves what fiberglass batts never could: the inward vapor drive that pushes Gulf humidity through walls and into air-conditioned rooms, condensing inside cavities where mold takes hold. The dominant housing stock here is slab-on-grade brick veneer from the 1960s through 1990s, built when R-11 attics and completely uninsulated wall cavities were code. We fix that with closed-cell foam on roof decks, dense-pack cellulose in walls, and air sealing before anything gets buried. Call (218) 261-7714 for a written price.
Why Houston Homes Are Different
Houston sits in IECC Climate Zone 2A, hot-humid, where the physics runs backward from what most national insulation advice assumes. Vapor drive moves from warm, wet exterior air toward the cooler, air-conditioned interior. Batt insulation installed with an interior-side vapor retarder, which works fine in Chicago or Minneapolis, traps moisture inside Houston wall cavities and attic assemblies. The result is mold behind drywall that nobody sees until the smell gives it away.
Housing stock compounds the problem. Inner-loop neighborhoods like The Heights and Montrose hold 1920s-1940s pier-and-beam bungalows with balloon-framed walls that were never insulated and open crawl spaces that pull humid air upward. Farther out, Memorial and Briargrove homes from the 1970s and 80s often still carry original fiberglass batts that have absorbed decades of Gulf Coast humidity, compressing to half their rated R-value. The attic is routinely 150°F from May through September, and ductwork running through that heat sheds a substantial fraction of its cooling output before conditioned air reaches a single register. Winter Storm Uri in February 2021 also showed what happens when this housing stock meets a hard freeze: pipes in unsealed attics and exterior walls failed by the thousands.
Our Main Houston Services
Two services account for most of the calls we take from Houston homeowners, and both trace back to the same underlying problem: heat and humidity moving through the building envelope.
Attic Insulation in Houston
Most Houston homes sit at R-11 to R-19 in the attic, well below what Zone 2A cooling loads actually demand. We air-seal top plates, can lights, and penetrations before adding insulation, then bring the attic to a measured level, typically R-38 to R-49, using blown-in fiberglass or cellulose. The full scope, pricing, and neighborhood specifics are on the Attic Insulation in Houston page.
Crawl Space Encapsulation & Vapor Barrier in Houston
Pier-and-beam homes in The Heights, Montrose, and parts of the East End pull humid crawl space air straight into the floor system. We seal vents, install a reinforced vapor barrier on the floor and up the piers, and condition the space where the layout calls for it. Details on Crawl Space Encapsulation & Vapor Barrier in Houston.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Spray Foam Insulation in Houston
Spray foam insulation in Houston is the only material that stops inward vapor drive at the source rather than slowing it down. Closed-cell foam applied to the roof deck creates a conditioned attic that keeps 150°F air and the ductwork out of the thermal equation entirely, while open-cell foam works well for interior wall cavities and sound control. On a 1970s Memorial-area home with original batts, the difference usually reads as a double-digit drop in cooling cost and a blower-door number cut roughly in half. Our Spray Foam Insulation work starts with air sealing, every time.
Closed-Cell Spray Foam
Signs you need it
Your upstairs rooms run 8-10 degrees warmer than downstairs through the summer, or your HVAC cycles constantly on humid days.
What it costs in Houston
Closed-cell foam on a roof deck in Houston typically runs $2.80 to $4.50 per board foot, so a 1,500-square-foot attic lands between $5,000 and $9,500.
How we do it
We air-seal all penetrations first, then spray closed-cell foam to the roofline at 1.5 to 2 inches, creating a conditioned attic and an air barrier in one application.
Open-Cell Spray Foam
Signs you need it
Interior rooms heat up fast and you hear every conversation through interior walls, or you need a cost-effective full-fill for a new build’s wall cavities.
What it costs in Houston
Open-cell foam in Houston runs $1.50 to $2.50 per board foot, with a full wall cavity installation in a 2,000-square-foot home landing between $2,000 and $4,500.
How we do it
We spray open-cell foam to full cavity depth in stud bays, where its air-sealing properties and 3.5-to-3.8 R-value per inch provide both thermal and acoustic performance.
What Spray Foam Insulation Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Closed-cell roof deck (1,500 sq ft attic) | $5,000 – $9,500 |
| Open-cell wall cavities (2,000 sq ft home) | $2,000 – $4,500 |
| Rim joist spray foam (per linear foot) | $8 – $15 |
Is closed-cell spray foam worth the cost in Houston?
Yes, for homes with ductwork in the attic. Moving the attic inside the thermal envelope cuts cooling load and stops 150°F attic air from stealing HVAC output before it reaches rooms.
Does spray foam cause moisture problems in Houston homes?
Not when installed correctly by a trained crew. Closed-cell foam acts as a vapor retarder only at full thickness; open-cell needs no vapor barrier in Houston’s climate.
Blown-In Insulation in Houston
Blown-in insulation in Houston is the fastest way to bring a 1960s-1990s attic from R-11 up to R-38 or R-49, the levels this climate’s nine-month cooling season actually requires. We run it over a properly air-sealed attic floor, because blowing insulation over unsealed top plates and can lights just buries leaks instead of fixing them. Our Blown-In Insulation crews use cellulose and fiberglass from Johns Manville, CertainTeed, and GreenFiber, with the material choice matched to the home’s framing and duct layout.
Blown-In Fiberglass
Signs you need it
Your attic insulation is below R-19, or you can see the tops of ceiling joists poking through the existing material.
What it costs in Houston
Blown-in fiberglass to R-38 in a typical Houston attic runs $1,800 to $3,200, depending on square footage and how much old material must be removed first.
How we do it
We air-seal first, then blow fiberglass to a consistent depth across the attic floor, checked with a depth gauge and documented with photos.
Blown-In Cellulose
Signs you need it
Your cooling bills climb every August, or your attic has irregular framing that leaves batt insulation with gaps and voids.
What it costs in Houston
Blown-in cellulose to R-38 in Houston typically runs $2,000 to $3,500 for an average attic, including the air sealing that must precede it.
How we do it
We dense-pack or loose-fill cellulose to the specified R-value, covering every joist bay completely with no batt-style gaps at framing.
What Blown-In Insulation Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Blown-in fiberglass to R-38 (average attic) | $1,800 – $3,200 |
| Blown-in cellulose to R-38 (average attic) | $2,000 – $3,500 |
| Top-up over existing insulation (to R-49) | $1,200 – $2,000 |
Is blown-in insulation better than batts in Houston attics?
Yes. Blown-in material fills irregular joist bays and settles into gaps batt insulation leaves open, which matters in Houston where any gap bleeds cooled air into a 150°F attic.
How long does blown-in insulation last in Houston?
Fiberglass and cellulose last 20-30 years if the attic stays dry and the material stays at full depth. Houston’s humidity compresses old batts; blown-in products hold their loft better.
Radiant Barrier Installation in Houston
Radiant barrier installation in Houston attacks the single largest heat source in a slab-on-grade brick-veneer home: the 150°F attic. A foil radiant barrier stapled to the underside of rafters reflects radiant heat before it can reach the insulation below, cutting attic temperature by a measurable 20-30 degrees during peak summer. In a climate where the cooling season runs nine months, that delta shows up directly on the electric bill. Our Radiant Barrier Installation includes a ventilation check, because a radiant barrier in a poorly vented attic creates its own set of problems in Houston’s humid air.
Attic Radiant Barrier
Signs you need it
Your attic is so hot in July that stored items warp, or your upstairs system runs continuously from noon to sunset.
What it costs in Houston
An attic radiant barrier in Houston runs $1,200 to $2,800 for a typical 1,500-square-foot attic, labor and foil included.
How we do it
We staple a double-sided foil radiant barrier to the rafter undersides, leaving a proper air gap at the ridge and soffit for ventilation.
Radiant Barrier Roof Deck
Signs you need it
You’re reroofing or building new, and you want radiant heat blocked before it even enters the attic assembly.
What it costs in Houston
Installed at reroof, a radiant barrier roof deck in Houston adds $1,800 to $3,500 depending on deck square footage and foil type.
How we do it
We install the foil-faced decking or foil overlay during construction, coordinated with the roofer’s schedule so the barrier is continuous under the deck surface.
What Radiant Barrier Installation Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Attic radiant barrier (1,500 sq ft attic) | $1,200 – $2,800 |
| Radiant barrier roof deck (at reroof) | $1,800 – $3,500 |
| Radiant barrier & ventilation correction | $2,500 – $4,000 |
Does a radiant barrier actually lower cooling bills in Houston?
Yes, by 5-10% in most Houston homes where the attic is the dominant heat source. The savings scale with how much ductwork runs through the unconditioned attic space.
Do I need a radiant barrier if I already have R-38 insulation?
Radiant barrier and insulation solve different problems. Insulation slows conductive heat; the barrier reflects radiant heat before it reaches that insulation, so both layers earn their keep in Houston summers.
Insulation Removal & Replacement in Houston
Insulation removal and replacement in Houston is most often a response to thirty years of Gulf Coast humidity, which compresses fiberglass batts in Memorial and Briargrove homes built during the 1970s and 80s and leaves behind a musty, ineffective mat. The second most common trigger is rodent damage: droppings and urine-soaked nesting material in attic insulation, which requires full removal, sanitizing, and fresh material. We vacuum out the old insulation, treat the deck, and install new insulation with a written record of what was removed and what went in. Details on our Insulation Removal & Replacement process.
Attic Insulation Removal
Signs you need it
Your attic insulation is matted, compressed, dust-filled, or visibly disturbed by rodents, and the R-value has dropped below what the depth suggests.
What it costs in Houston
Attic insulation removal in Houston typically runs $1,500 to $3,000 for a 1,500-square-foot attic before new insulation is installed.
How we do it
We run a commercial vacuum line from the attic to a sealed container outside, removing loose-fill and batt material without tracking debris through the house.
Contaminated Insulation Removal
Signs you need it
You smell a persistent musty or ammonia odor from the attic, or you find droppings and nesting trails in the insulation.
What it costs in Houston
Contaminated insulation removal and sanitizing in Houston runs $2,500 to $5,000 depending on contamination extent and attic size.
How we do it
We remove all contaminated material, apply a hospital-grade sanitizing treatment to the deck and framing, and document the process with photos at each stage.
What Insulation Removal & Replacement Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Attic insulation removal (1,500 sq ft) | $1,500 – $3,000 |
| Contaminated removal & sanitizing | $2,500 – $5,000 |
| Full removal plus R-38 blown-in replacement | $3,500 – $6,500 |
Do I need to remove old insulation before adding new in Houston?
Not always. If the existing material is dry, uncontaminated, and below R-38, we can top it up. If it is compressed, moldy, or rodent-damaged, full removal is the correct call.
Can you remove insulation from a Houston attic in one day?
Most 1,500-square-foot attics are fully vacuumed and cleaned in one day. Replacement insulation typically goes in the following morning after the deck inspection and air sealing are done.
Attic Air Sealing in Houston
Attic air sealing in Houston is the precondition for every other insulation job we quote, because unsealed top plates, can lights, and duct boots leak cooled air into a 150°F attic while pulling humid outside air into the house. A blower-door test on a typical 1980s Houston home reads 3,500 to 5,000 CFM50 before sealing, and often 2,000 or less after. The 365-Day Done Right Promise covers the work, and we hand over the before-and-after readings so the performance change is documented. See our Attic Air Sealing process.
Top Plate & Penetration Sealing
Signs you need it
You can feel air moving around plumbing vents, wiring holes, and the gaps where interior walls meet the attic floor.
What it costs in Houston
Top plate and penetration sealing in Houston runs $800 to $1,800 depending on attic size and how many penetrations require treatment.
How we do it
We seal every top plate, chase, and penetration with a fire-rated foam or caulk, then re-test the blower door to measure the improvement.
Can Light & Duct Boot Sealing
Signs you need it
Recessed can lights are warm to the touch in summer, or registers blow weakly because duct boots leak into the attic.
What it costs in Houston
Can light and duct boot sealing in Houston runs $500 to $1,200, with the higher end covering attic-side boxes built over non-IC-rated cans.
How we do it
We seal can light housings to the drywall and mastic-seal every duct boot to the ceiling plane, eliminating two of the leakiest penetrations in Houston attics.
What Attic Air Sealing Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Top plate & penetration sealing (typical attic) | $800 – $1,800 |
| Can light & duct boot sealing | $500 – $1,200 |
| Full attic air sealing with blower-door verification | $1,500 – $2,800 |
How do I know if my Houston home needs air sealing?
A blower-door test gives the answer in one number. Readings above 2,500 CFM50 on a 2,000-square-foot home mean conditioned air is leaving through the attic at a rate worth fixing.
Is attic air sealing more important than insulation in Houston?
Yes, and the order matters. Sealing first, then insulating, delivers the full performance. Insulating over unsealed penetrations buries the leaks and compounds moisture problems in Houston’s humid climate.
Wall Insulation in Houston
Wall insulation in Houston addresses the single biggest gap in the city’s 1960s-1990s housing stock: wall cavities that were never insulated at all. Brick-veneer homes from the oil-boom decades often have empty stud bays, which is why west-facing rooms in Memorial and Briargrove heat up by mid-afternoon. Injection foam and drill-and-fill methods get insulation into those cavities without tearing out drywall, and dense-pack cellulose works for the 1920s-1940s balloon-framed bungalows in The Heights and Montrose. Our Wall Insulation work always starts with a blower-door reading to establish the baseline before the wall work begins.
Drill & Fill Wall Insulation
Signs you need it
Your interior walls are warm to the touch on summer afternoons, or a stud finder confirms empty stud bays in an exterior wall.
What it costs in Houston
Drill-and-fill wall insulation in Houston runs $2,500 to $5,500 for an average single-story home, depending on wall square footage and access.
How we do it
We drill small access holes through the exterior or interior finish, blow insulation into each stud bay, then patch and refinish the holes to match.
Injection Foam Wall Insulation
Signs you need it
Your brick-veneer home has empty cavities behind the plaster or drywall, and the walls radiate heat into the house by late afternoon.
What it costs in Houston
Injection foam wall insulation in Houston typically runs $3,000 to $7,000 for a standard home, with the higher end covering two-story and veneer-with-sheathing configurations.
How we do it
We inject a slow-rise foam through small ports that fills cavity voids and hardens into an air barrier, cutting both heat transfer and air leakage through walls.
What Wall Insulation Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Drill & fill wall insulation (average home) | $2,500 – $5,500 |
| Injection foam wall insulation (average home) | $3,000 – $7,000 |
| Interior wall soundproofing (one wall assembly) | $600 – $1,400 |
Can you add wall insulation without removing drywall in Houston?
Yes. Drill-and-fill and injection foam methods access wall cavities through small holes, then patch them. The work typically takes one to two days per floor.
Why is my Houston home so hot on the west side?
West-facing walls absorb direct afternoon sun, and if the stud bays were never insulated, that heat radiates straight into living areas. Wall cavity insulation cuts the transfer at the source.
Attic Cleaning & Rodent Proofing in Houston
Attic cleaning and rodent proofing in Houston is driven by the city’s rodents: roof rats and squirrels that enter through soffit gaps, gable vents, and chimney chases, then nest in insulation that has already absorbed decades of humidity. Removing the contaminated material, sanitizing the deck, and sealing every entry point is the only sequence that works, because cleaning without exclusion just resets the clock for the next infestation. Our Attic Cleaning & Rodent Proofing crews document the entry points and the work with photos.
Attic Cleanout
Signs you need it
You hear scratching in the ceiling at dusk, find droppings in the attic, or your insulation shows distinct nesting trails and matted runs.
What it costs in Houston
Attic cleanout in Houston runs $800 to $1,800 for a typical attic, with the higher end covering deep debris and construction remnants.
How we do it
We vacuum out loose debris and contaminated insulation, remove nest material, and haul everything off-site in sealed bags.
Rodent Proofing & Exclusion
Signs you need it
You see gnaw marks at soffit edges, daylight at gable vents, or repeated rodent activity even after trapping.
What it costs in Houston
Rodent proofing and exclusion in Houston runs $1,200 to $3,000 depending on roofline length and how many entry points require sealing.
How we do it
We seal every accessible entry point with steel mesh, hardware cloth, and foam, then inspect from the exterior to confirm no gaps remain above arm’s reach.
What Attic Cleaning & Rodent Proofing Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Attic cleanout (typical attic) | $800 – $1,800 |
| Rodent proofing & exclusion | $1,200 – $3,000 |
| Full cleanout, sanitizing, and exclusion | $2,500 – $4,500 |
Do I need to replace insulation after rodent activity in Houston?
Yes, in most cases. Rodent urine and droppings contaminate the insulation, and the ammonia odor persists. Removal, sanitizing, and fresh material is the standard sequence.
How do rodents get into Houston attics?
Roof rats enter through soffit gaps, gable vents without screens, and gaps where rooflines meet chimneys. Exclusion work closes those paths permanently with materials rodents cannot chew through.
Home Energy Audit in Houston
A home energy audit in Houston answers the question every homeowner in the city asks by August: where is the cooling going? The blower-door test gives one number for total envelope leakage, thermal imaging maps exactly where heat enters, and a duct leakage test measures how much HVAC output never reaches a register. For homes built in Houston’s oil-boom decades, the answer is usually the same combination: under-insulated attics, unsealed penetrations, and leaky duct boots. See our Home Energy Audit scope.
Blower Door Test
Signs you need it
Your home feels drafty in winter, humid in summer, or your energy bills are 30% higher than neighbors with similar square footage.
What it costs in Houston
A standalone blower door test in Houston runs $250 to $500, with the number often credited toward insulation work if we do the job.
How we do it
We mount the blower door in an exterior doorway, depressurize the house to 50 pascals, and read the CFM50 number that quantifies total envelope leakage.
Thermal Imaging Inspection
Signs you need it
Certain rooms never hold temperature, or you suspect missing insulation but cannot see inside the walls.
What it costs in Houston
A thermal imaging inspection in Houston runs $200 to $400 as part of a full audit, and it identifies exactly which wall cavities and ceiling bays are under-insulated.
How we do it
We scan every exterior wall, ceiling plane, and duct run with an infrared camera, capturing images that show heat transfer through the building envelope.
What Home Energy Audit Costs in Houston
| Item | Typical range in Houston |
|---|---|
| Blower door test (standalone) | $250 – $500 |
| Thermal imaging inspection | $200 – $400 |
| Full audit with blower door, thermal imaging, duct test | $600 – $1,200 |
Is a home energy audit worth it in Houston?
Yes. A full audit identifies exactly where conditioned air is leaving, so the insulation and sealing work targets measured leaks rather than guessed-at ones. Most Houston homes find enough savings to cover the audit cost within two years.
Do I need a blower door test before insulation in Houston?
Strongly recommended. Without a baseline number, you cannot verify the improvement after sealing and insulation. Every Topside Attic Insulation job that involves air sealing includes before-and-after readings.
Brands We Service in Houston
We work with materials from Johns Manville, Knauf, CertainTeed, and Rockwool, stocked through our Houston supply chain. Replacement parts and specialty products are typically available within one business day. See our brands for the full list.
Pricing for Insulation in Houston, TX
| Service | Typical range in Houston |
|---|---|
| Closed-cell spray foam roof deck (1,500 sq ft attic) | $5,000 – $9,500 |
| Open-cell spray foam wall cavities (2,000 sq ft home) | $2,000 – $4,500 |
| Rim joist spray foam (per linear foot) | $8 – $15 |
| Blown-in fiberglass to R-38 (average attic) | $1,800 – $3,200 |
| Blown-in cellulose to R-38 (average attic) | $2,000 – $3,500 |
| Attic radiant barrier (1,500 sq ft attic) | $1,200 – $2,800 |
| Attic insulation removal (1,500 sq ft) | $1,500 – $3,000 |
| Full attic air sealing with blower-door verification | $1,500 – $2,800 |
| Drill & fill wall insulation (average home) | $2,500 – $5,500 |
| Full home energy audit | $600 – $1,200 |
Prices in Houston run higher when access is tight, when rodent contamination requires removal and sanitizing, or when a pier-and-beam home needs crawl space treatment before attic work begins. Every quote is a written flat price under The Haven Standard: no work starts without a written scope and a written warranty in your hand.
Neighborhoods We Serve in Houston
We work across the Houston metro without mileage charges, same-day response on most emergency calls. Typical arrival window is within 24-48 hours for scheduled work.
- The Heights
- Montrose
- Memorial
- Briargrove
- East End
Service Area - Cities Near Houston
Our crews serve Houston and the surrounding metro. We also work in Pasadena, TX, Pearland, TX, Baytown, TX, and Missouri City, TX, with the same written-price requirement and documented photo record on every job.
Serving Houston, TX - Our Local Coverage Area
We’re based in the Houston 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 About Insulation in Houston
Scheduled insulation work typically starts within 24-48 hours of the written estimate. Emergency calls, including storm damage or sudden rodent entry, receive same-day response when you call (218) 261-7714.
Most insulation and air sealing work does not require a City of Houston permit, but spray foam on a roof deck can trigger a building code review in some scenarios. We handle all permitting coordination where required.
Yes. Pier-and-beam homes in The Heights and Montrose often need both attic air sealing and crawl space encapsulation, and we schedule them as one scope with one written price before work starts.
For a written price on insulation in Houston, call (218) 261-7714. A live person answers, 24/7, and every estimate is free with no obligation.
What happens when you call
- 1A real person answersNo phone trees - talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Houston Customers Say
"The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R."Two other companies quoted to blow more insulation on top of what was there. These were the only ones who said the existing material had to come out first, and explained why."
- Clifford E."Fixed price, clean work, and they hauled the old material away as agreed."
- Todd M.