Leander is growing fast along the Toll 183A corridor, and with it come thousands of new two-story homes on slab foundations with bonus rooms, garages, and attics that hit 140 to 160 degrees Fahrenheit through the long Texas summer. If your cooling bills have become unaffordable or a back bedroom refuses to cool, the culprit is almost always an attic that is not sealed and insulated properly.
Austin Spray Foam Insulation has served Leander and the surrounding Austin area since 2012. We spray foam attics, walls, crawl spaces, and rim joists, and we seal the air leaks that let conditioned air escape and let the Hill Country heat pour in. Our team is fully insured, and we show up with a written estimate that names the R-value and thickness we will install. We do the work right, or we do not do it.
Spray Foam Insulation in Leander (78641)
Leander's building stock is mostly new construction, and most of it sits on concrete slabs with ductwork and water lines running through an unconditioned attic. In summer, that attic becomes an oven. The ductwork loses conditioning to the heat around it, your air conditioner runs harder and longer, and your bill climbs. In winter, a hard freeze can burst water lines that run through that same attic, and a failed seal around penetrations lets cold air leak into the rooms below. Spray foam stops both problems. It seals the attic, keeps the ductwork cool in summer and warm in winter, and gives you a conditioned or semi-conditioned space instead of a furnace.
We also see homes in the older neighborhoods west and south of Leander where the walls were built with empty cavities and no original insulation, and where a bonus room over the garage or a back bedroom never reaches the temperature you set on the thermostat. Wall injection foam fills those cavities without tearing into the drywall. On the new metal buildings and barndominiums that dot the Hill Country around Leander, closed-cell foam stops condensation that would otherwise drip off the underside of a metal roof or wall and wreck the space inside. Our team has installed spray foam insulation in Leander and across Greater Austin for more than a decade.
Our services in Leander
- Attic Spray Foam Insulation in Leander · Open-cell foam on the roof deck turns a 150°F Austin attic into conditioned…
- Closed Cell Spray Foam Insulation in Leander · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Leander · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Leander · Injection foam fills closed walls through small drilled ports, no demolition.
- Crawl Space Spray Foam Insulation in Leander · Closed-cell foam on pier-and-beam subfloors and crawl space skirts stops cold…
- Rim Joist & Band Joist Spray Foam in Leander · Band joists; cantilevers and bonus-room floors over garages leak conditioned…
- Garage Spray Foam Insulation in Leander · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Leander · Closed-cell foam is the insulation that stops a Texas metal building from…
- Commercial & New Construction Spray Foam in Leander · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Leander · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Leander · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Leander · Top plates; can lights; chases and attic hatches leak more cooled air than most…
How a Job Works in Leander
We start with a free on-site assessment. We walk your attic, crawl space, or the walls you want to insulate, measure the area, talk through your comfort problem or your energy bill, and explain what thickness and R-value we would install and why. We give you a written estimate with those specs in it, the price, and the timeline. No surprises.
On the day of the work, our crew will set up mechanical ventilation to manage odor and off-gases during the spray and cure. We spray the foam in controlled passes to hit the thickness and density the manufacturer specifies. If there is old, compressed, or rodent-fouled insulation in the way, we remove it first and haul it away. If there is moisture or a leak, we fix it or we walk away. We do not spray over wet substrate, and we do not cover up a problem.
After the foam cures, we clean up the site and do a final walkthrough with you. The re-entry window is typically twenty-four to forty-eight hours before the space can be occupied or used normally. We leave your property clean and your insulation ready to perform.
Attic spray foam in Leander typically runs from $1.50 per square foot for open-cell foam to $1.20 per board foot for closed-cell foam, depending on the area to cover, the thickness and R-value specified, and what has to be removed first. A 1,500-square-foot attic with existing insulation that stays in place might run $2,200 to $2,800. Wall injection foam into closed cavities runs from $2 per square foot. Crawl space foam starts at $2,500. Removal and replacement of contaminated insulation starts at $950 to $2,800, depending on volume and disposal. The real cost drivers are the square footage or board footage to cover, the R-value you need (which your energy code and your building official set), whether we remove old insulation first, and how tight or hard to access the space is. We give you a free written estimate that lays all of it out. Call us at (737) 404-4885 or reach out online, and we will schedule an on-site visit in Leander.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Leander and nearby areas.
