Austin's central neighborhoods are filled with 1900s Craftsman bungalows and Victorian cottages raised on pier-and-beam over open crawl spaces, while the rest of the city runs concrete slab with brick or limestone ranches and two-stories built in the 1950s through today. Above nearly all of them, ductwork and water lines run through vented attics that hit 140 to 160 degrees Fahrenheit through the long brutal summers, and that heat loss in winter and condensation risk year-round is exactly why Austin homeowners call us.
Austin Spray Foam Insulation has been sealing and insulating homes across Austin and the surrounding areas since 2012. We know the pier-and-beam crawl spaces of Hyde Park and Clarksville, the empty wall cavities of 1950s Allandale and Windsor Park, the bonus rooms over garages in Round Rock and Cedar Park that never cool down, and the metal buildings and barndominiums out past Dripping Springs and Bastrop that sweat without closed-cell foam. We show up with the right equipment, do the work correctly, and stay reachable when you have a question.
Spray Foam Insulation in Austin (78701)
Austin sits on the Balcones Escarpment where limestone hills drop to black clay prairie, and the homes built here sit on concrete slabs or on pier-and-beam foundations with no basements. The construction varies by neighborhood and era. Central Austin keeps the oldest housing stock: 1900s through 1940s frame cottages and bungalows raised on piers with open crawl spaces underneath, often with rim joists and band joists that leak air and cold. The mid-century neighborhoods from Allandale to Barton Hills run brick and limestone ranches with flat attics and wall cavities that were never insulated when the house was built. West of MoPac the newer subdivisions hold large homes with vaulted ceilings and cathedral roofs. All across the city, above slab and above pier-and-beam alike, the attic runs hot. Ductwork bakes in 150-degree summer heat, water lines freeze in the winter hard freezes that hit every few years, and condensation drips off metal building roofs and garage ceilings when the humidity rises. We spray closed-cell foam into crawl spaces to stop the moisture and seal the rim joist, open-cell foam into attics and vaults to stop the heat loss and air leakage, and injection foam into the closed walls of older homes where cavity insulation never existed. We remove and replace insulation that has been compressed by settling, fouled by rodents, or damaged by roof leaks. We handle the air sealing around every job. We have been doing this work across Austin and the Austin area for over a decade, and we know what works here.
Our services in Austin
- Attic Spray Foam Insulation in Austin · Open-cell foam on the roof deck turns a 150°F Austin attic into conditioned…
- Closed Cell Spray Foam Insulation in Austin · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Austin · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Austin · Injection foam fills closed walls through small drilled ports, no demolition.
- Crawl Space Spray Foam Insulation in Austin · Closed-cell foam on pier-and-beam subfloors and crawl space skirts stops cold…
- Rim Joist & Band Joist Spray Foam in Austin · Band joists; cantilevers and bonus-room floors over garages leak conditioned…
- Garage Spray Foam Insulation in Austin · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Austin · Closed-cell foam is the insulation that stops a Texas metal building from…
- Commercial & New Construction Spray Foam in Austin · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Austin · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Austin · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Austin · Top plates; can lights; chases and attic hatches leak more cooled air than most…
How a Job Works in Austin
We start with a free on-site assessment. We walk your attic, crawl space, walls or garage with you, take measurements, identify what needs to come out before anything new goes in, and explain what the code requires at your address and what the building official will inspect. We listen to where you are uncomfortable, where your bills are highest, and what you have tried before. We leave you with a written estimate that names the R-value, the foam thickness in each space, the square footage or board footage, the material cost and labor cost, and the timeline. No surprises, no pressure.
On the day of the work, our crew arrives early and sets up mechanical ventilation. Spray foam is applied in controlled passes at the manufacturer ratio and drum temperature, and we maintain that ventilation through the full cure window. If we are removing old insulation first, we haul it out and dispose of it properly. If we are sealing rim joists or band joists, we tape and foam the rim, the band, the rim band, and the header. If we are spraying an attic, we work around the HVAC ducts and equipment and stay clear of recessed lights and exhaust penetrations unless the code requires a thermal barrier. If we are spraying a crawl space, we seal the band joist and the rim, then foam the perimeter walls and any piers. We do not spray over wet substrates, standing water, or active leaks. If the moisture has to be fixed first, we tell you that and we walk away if you do not fix it. The re-entry window for occupied spaces is twenty-four to forty-eight hours depending on the foam type and the ventilation. We leave your property clean, we remove all equipment and waste, and we walk through the finished job with you before we leave.
Pricing for spray foam insulation in Austin depends on what you are doing and what has to happen first. Attic spray foam typically runs from $1.50 per square foot for open-cell foam to $1.20 per board foot for closed-cell, depending on the thickness and R-value required by code and the square footage of the attic. Wall injection foam in the closed cavities of older homes runs from $2 per square foot. A crawl space spray foam job with rim joist sealing and perimeter wall foam typically starts at $2,500 and goes up with the size and the amount of old insulation that has to come out. Rim joist and band joist sealing alone runs from $650. A garage foam job starts at $1,200. Insulation removal runs from $950 depending on the volume and the disposal. Re-insulation of a space where old material has been removed starts at $2,800. The key cost factors are the square footage or board footage to cover, the R-value and thickness specified in the estimate, whether you choose open-cell or closed-cell foam, how much existing insulation has to be removed first, and the difficulty of access. Call us at (737) 404-4885 for a free estimate. We measure on site, we write it down, and we price it honestly.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Austin and nearby areas.
