McKinney's Victorian homes on Chestnut and Church streets sit on pier-and-beam foundations with plank walls, while the newer two-stories spreading toward Stonebridge Ranch, Craig Ranch and Trinity Falls run steep roofs over vaulted ceilings and bonus rooms that never cool down. In all of them, your attic hits 140 degrees by mid-afternoon in summer, your ductwork bakes inside it, and the gap between what your air conditioner costs and what it actually delivers keeps growing.
Mckinney Spray Foam Insulation has been sealing those leaks and insulating those spaces since 2012. We know McKinney's building stock, the black clay under the slabs, the spring hail and the weeks past 100 degrees. We spray foam in attics, crawl spaces, walls and metal buildings across 75069 and the surrounding area, and we leave your property clean and your home measurably tighter and quieter when we walk away.
Spray Foam Insulation in McKinney (75069)
McKinney's attics are the biggest problem and the biggest opportunity. Whether you live in a 1920s Folk Victorian with plank walls and a low-slope roof, a 1970s brick ranch with a single-story attic, or a 2010s two-story in a master-planned subdivision with a vaulted ceiling and a bonus room over the garage, your attic is vented to the outside, and it is not conditioned. In July, that space reaches 140 to 150 degrees. Your air handler sits in it. Your ductwork runs through it. Every seam in that ductwork leaks cooled air into a 150-degree space, and you pay for every bit of it. Closed-cell spray foam stops that leak. It also stops the condensation that drips off metal ducts on a humid morning, and it holds the ductwork at a temperature close to the air inside it.
Crawl spaces under older homes and under the additions on newer ones are damp in spring and fall. Black clay under slab-on-grade homes swells and shrinks, and cracks form. Closed-cell foam seals both. Wall cavities in homes built before the 1990s are often empty. Injection foam fills them without tearing into the drywall. Rim joists and band joists around the perimeter of a pier-and-beam house or under a cantilever are thermal bridges where heat and cold leak straight into the living space. We seal those with foam and air sealing.
Our team has been doing this work in McKinney and the surrounding area since 2012. We measure every job on site, specify the R-value and thickness in writing, and we do not spray foam over wet, contaminated or leaking substrate. If the moisture has to be fixed first, we say so.
Our services in McKinney
- Attic Spray Foam Insulation in McKinney · Open-cell foam on the roof deck turns a 150°F McKinney attic into conditioned…
- Closed Cell Spray Foam Insulation in McKinney · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in McKinney · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in McKinney · Injection foam fills closed walls through small drilled ports, no demolition.
- Crawl Space Spray Foam Insulation in McKinney · Closed-cell foam on pier-and-beam subfloors stops cold floors in a freeze and…
- Rim Joist & Band Joist Spray Foam in McKinney · Band joists; cantilevers and bonus-room floors over garages leak conditioned…
- Garage Spray Foam Insulation in McKinney · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in McKinney · Closed-cell foam is the insulation that stops a Texas metal building from…
- Commercial & New Construction Spray Foam in McKinney · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in McKinney · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in McKinney · The full reset: old material removed; gaps air-sealed…
- Air Sealing in McKinney · Top plates; can lights; chases and attic hatches leak more cooled air than most…
How a Job Works in McKinney
We start with a free on-site assessment. You walk us through the problem: a bedroom that will not cool, a summer electric bill that has jumped, condensation on a metal building, or insulation that has gotten damp or compressed and needs to come out. We look at the space, measure it, talk through the options, and send you a written estimate that names the R-value, the thickness in inches, and the cost. No guessing, no surprises.
On the day of the work, we set up mechanical ventilation before we spray. Spray foam cures as it sits, and it releases vapor while it does. We keep the space ventilated for the duration of the cure. If it is your home, we ask you to stay out for twenty-four to forty-eight hours after we finish. If it is a commercial space or a metal building, we coordinate the re-entry window with you. We mask off HVAC equipment, electrical panels and anything else that should not get foam on it, and we spray to the thickness we specified in the estimate.
When the foam is cured, we do a final walkthrough with you. We leave your property clean. If we had to remove old insulation first, we haul it away. If we had to cut access into a wall or attic, we patch it. You get a receipt, a description of what we did, and a number to call if anything comes up.
Pricing for spray foam insulation in McKinney depends on what you are insulating, what has to come out first, and how thick the foam needs to be to hit your target R-value. A typical attic top-up (adding closed-cell foam over existing insulation) runs from $1.50 per square foot. A full attic removal and re-insulation with closed-cell foam starts around $2,800 for a modest single-story home and climbs with square footage and thickness. A crawl space starts at $2,500. Wall injection foam in a retrofit runs from $2 per square foot. Rim joist and band joist sealing starts at $650. A garage conversion with closed-cell foam starts at $1,200. Metal buildings and barndominiums run from $1.75 per square foot. The cost factors are the area to cover, the R-value and thickness you need, whether you are using open-cell or closed-cell foam, what existing insulation has to be removed, and how easy or tight the access is. Call us at (469) 247-0288 for a free estimate. We will measure your space, walk you through the options, and give you a price in writing.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in McKinney and nearby areas.
