Attic Spray Foam Insulation Mission, TX 78572 | McAllen Spray Foam Insulation

Spray Foam Insulation in Mission, TX (78572) · Local Professionals

McAllen Spray Foam Insulation · Fast response in Mission and the McAllen area · Free estimate 24h

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Mission sits where the Rio Grande Valley opens up, and your home is built on the same foundation as every house around it: a concrete slab, with a vented attic running 150-160°F for most of the year, and ductwork carrying cooled air through that brutal heat. Whether you live in one of the older pier-and-beam homes near downtown Mission or in one of the brick-veneer ranches spreading south toward Pharr, your attic and walls are leaking cool air and pulling humid air inward, and your summer electricity bill shows it.

That is why homeowners in Mission and across the McAllen area call McAllen Spray Foam Insulation. We have been sealing attics, walls, crawl spaces and metal buildings in this climate since 2012, and we know exactly what works in ZIP 78572.

Spray Foam Insulation in Mission (78572)

Mission's building stock tells the story. The older frame and stucco homes near downtown sit on pier-and-beam foundations with crawl spaces underneath, while the ranches and two-stories built from the 1960s onward run concrete slabs with vented attics packed with fiberglass or blown-in mineral fiber. In both cases, the attic is the problem. Your air handler and ductwork live up there, and in the Rio Grande Valley's subtropical climate, that means your cooled air is leaking through gaps in the rim joists, around the attic access, through the soffit vents, and into the walls where it meets humid air coming in from outside. Condensation forms on the underside of the roof deck. Insulation gets damp and compressed. Your cooling system runs constantly and your bill climbs.

Closed cell spray foam seals those leaks completely. Open cell foam works in walls and attics where moisture is not the primary driver. We remove old, damp or rodent-fouled insulation before we spray anything new, and we leave your crawl space or attic dry and sealed. Our team has been doing this work in Mission and the surrounding McAllen area for over a decade.

Our services in Mission

Attic Spray Foam Insulation in Mission · Open-cell foam on the roof deck turns a McAllen attic that hits 160°F under…
Closed Cell Spray Foam Insulation in Mission · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
Open Cell Spray Foam Insulation in Mission · Half-pound open-cell foam air-seals attics and interior walls at a friendlier…
Wall & Injection Foam Insulation in Mission · Injection foam fills closed walls through small drilled ports, no demolition.
Crawl Space Spray Foam Insulation in Mission · Older pier-and-beam houses in Mission…
Rim Joist & Band Joist Spray Foam in Mission · Bonus-room floors, cantilevers and band joists leak cooled air at every framing…
Garage Spray Foam Insulation in Mission · Garage ceilings under bonus rooms and walls shared with the house are…
Metal Building & Barndominium Spray Foam in Mission · Closed-cell foam is the insulation that stops a Rio Grande Valley metal…
Commercial & New Construction Spray Foam in Mission · Warehouses; cold storage; offices…
Insulation Removal in Mission · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
Insulation Replacement & Re-Insulation in Mission · The full reset: old material removed; gaps air-sealed…
Air Sealing in Mission · Top plates; can lights; chases and attic hatches pull humid outside air into a…

How a Job Works in Mission

We start with a free on-site assessment at your property in Mission. We look at your attic, crawl space or walls, measure the area, talk through your comfort problems and your energy bill, and explain exactly what needs to happen and why. You get a written estimate with R-value and thickness specifications so you know what you are paying for.

When we schedule the work, we coordinate around your schedule and your HVAC system. If your insulation has to come out first because it is wet or contaminated, we remove it and haul it away. We set up mechanical ventilation during the spray and cure process so the smell stays outside and does not move through your home. We spray the foam to the exact thickness and R-value on your estimate, and we give you a re-entry window of twenty-four to forty-eight hours before the space is safe for normal use again.

We clean up completely and walk through the finished job with you. Your property is left clean, and you are left with a sealed, high-performance attic or crawl space that will hold that R-value for decades.

Pricing for spray foam insulation in Mission depends on what you are sealing and what has to come out first. An attic top-up with open cell foam on sound insulation typically runs from $1.50 per square foot. Closed cell foam, which is thicker and handles moisture better, starts around $1.20 per board foot. A crawl space spray foam job usually begins at $2,500 and goes up with the square footage and whether the crawl space is accessible. Rim and band joist sealing runs from $650. If you have old, damp or rodent-fouled insulation that has to be removed before anything new goes in, expect insulation removal to start around $950, and full replacement and re-insulation to begin at $2,800. The biggest cost factors are the area to cover, the R-value and thickness you need (set by your building code and your comfort goal), whether you choose open or closed cell, and whether we have to remove and haul away what is already there. Call us at (956) 540-5716 for a free estimate. We will give you a firm price in writing with all the specs spelled out.

✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Mission and nearby areas.

I live in one of the older homes near downtown Mission, on a pier-and-beam foundation. My crawl space is damp and I can feel cold air coming up through the floor in winter. What does spray foam do for a crawl space like mine?

Closed cell spray foam seals the rim joists, band joists, and the rim of the foundation so cold air and humid air stop moving between your crawl space and your living space. We spray the underside of the floor system and the rim, and the foam creates an air barrier that also protects against moisture. Your floor stays warmer and drier, and you stop pulling damp air into your home. The crawl space itself stays stable. We can handle tight access and low headroom, and our crews are fully insured for crawl space work.

My attic insulation is old and compressed, and when I go up there it smells musty. Do I have to have it all removed before you spray foam?

Yes. If insulation is wet, compressed, or contaminated, we remove it before we spray anything new. We haul it away for you. Spray foam on top of damp or fouled insulation will not fix the problem, and it is not worth doing. We inspect the attic, tell you what has to come out, give you a price for removal, and then spray the foam to seal and insulate. Call (956) 540-5716 and we will walk through your attic with you and explain what we find.

How much does it cost to spray foam an attic in Mission, and what affects the price?

Attic spray foam in Mission typically starts at $1.50 per square foot for open cell foam on top of sound existing insulation, or from $1.20 per board foot for closed cell. The price depends on your attic size, the R-value and thickness you need, whether you choose open or closed cell, and whether we have to remove old insulation first. A 1,500-square-foot attic with removal and closed cell foam will cost more than a simple open cell top-up of a clean attic. We give you a written estimate with all specs before we start. Call (956) 540-5716 for a free on-site assessment.

Who sets the R-value and thermal barrier requirements for my attic in Mission, and do I need a permit?

The energy and building code that applies to your address, plus the building official at the City of Mission, set the R-value and thickness you need. Ignition barriers and thermal barriers are also governed by code, and the fifteen-minute thermal barrier requirement is a detail that catches a lot of installers off guard. We follow the code that applies at your property, but we do not set it. You can verify what applies to your address by contacting the City of Mission or checking the City of Mission website at https://www.missiontexas.us. Permitting and contractor registration requirements vary by city across Greater McAllen, so always confirm with your local building department before work begins.

If I have spray foam sprayed in my attic, how long before I can go back up there, and will the smell bother me inside the house?

We set up mechanical ventilation during the spray and cure process so the smell stays in the attic and does not move into your living space. The re-entry window is twenty-four to forty-eight hours, meaning the space is safe for normal use after that time. You will notice a slight smell in the attic for a few weeks as the foam fully cures, but it will not affect your home. If you are worried about air movement during the work, we coordinate the timing and ventilation so you stay comfortable.

Are you insured? What coverage do you carry for spray foam work at my home in Mission?

Yes, we are fully insured. We carry general liability and workers' compensation insurance for all spray foam insulation and air sealing work. Before any contractor starts work at your home, always ask for proof of current insurance and verify it directly with the insurance company. We are happy to provide that documentation.

What is the best time of year to have spray foam insulation done in Mission, and can I do it during the summer when my cooling bills are highest?

You can spray foam any time of year in the Rio Grande Valley, but summer is actually the hardest season. Your air conditioning is running at full capacity, and the heat makes the work slower and harder on the crew. Fall through spring is easier and faster, and you will feel the benefit of the seal all through the hot months that follow. If your bill is already high in July or August, we can usually schedule you for early fall and you will see the difference starting in the next cooling season. Call (956) 540-5716 to find out when we have availability.