Fenton sits where Interstate 44 meets the Meramec, a working-class city built through the 1980s and 2000s with solid brick ranches, split-levels and ranch homes that sit on basements and crawl spaces, all of them fighting the same battle: summer heat that bakes attics to 140 degrees and winter cold that freezes rim joists and band joists solid. St. Louis Spray Foam Insulation has been sealing and insulating homes in Fenton and across the St. Louis area since 2012, and we understand exactly what your house needs.
When your cooling bill climbs in July or a room over the garage never reaches temperature in winter, the problem is usually air leakage and missing insulation in the spaces your HVAC system cannot reach. Fenton's older subdivisions and the newer construction along the I-44 corridor both have the same weak spots: attics with thin or settled insulation, crawl spaces that sweat in spring, rim joists that let cold air pour into living spaces, and walls with empty cavities. We fix those with spray foam and air sealing, and we do it right the first time.
Spray Foam Insulation in Fenton (63026)
Fenton's housing stock splits into two clear groups. The 1980s-2000s subdivisions carry brick ranches and split-levels on poured concrete basements and crawl spaces, with attics that were either never insulated properly or have insulation that has settled flat over decades. The newer construction along the I-44 corridor brings two-story homes with vaulted great rooms, bonus rooms over garages, and cathedral ceilings that are nearly impossible to insulate with blown-in fiberglass. Both generations have the same problem in Fenton's mixed-humid climate: summer humidity drives moisture inward through walls and attics, winter cold drives it outward, and if your insulation and air sealing are not right, you get condensation, damp insulation, and rising utility bills.
Spray foam solves this because it seals and insulates in one step. Closed cell foam in an attic stops air leakage and gives you the R-value you need in a thin layer. Open cell foam in a wall cavity or a crawl space lets moisture move through the assembly without trapping it. We know which one belongs in which space in a Fenton home, and we install it with the thickness and R-value written down so you know what you have. Our team has been doing this work in St. Louis since 2012, and we have seen every variation of Fenton's building stock.
Our services in Fenton
- Attic Spray Foam Insulation in Fenton · Open-cell roof-deck foam turns an attic that bakes at 140°F in July and freezes…
- Closed Cell Spray Foam Insulation in Fenton · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Fenton · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Fenton · Injection foam fills closed frame walls through small drilled ports…
- Crawl Space Spray Foam Insulation in Fenton · Closed-cell foam on crawl space walls and subfloors ends the cold floors of…
- Rim Joist & Band Joist Spray Foam in Fenton · Basement rim joists leak more cold air than almost anything in a St. Louis…
- Garage Spray Foam Insulation in Fenton · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Fenton · Closed-cell foam stops a Missouri metal building from sweating in spring and…
- Commercial & New Construction Spray Foam in Fenton · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Fenton · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Fenton · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Fenton · Top plates; can lights; chimney chases and attic hatches leak more heated and…
How a Job Works in Fenton
We start with a free on-site assessment. You describe what is not working: a room that will not heat or cool, a cooling bill that jumped, or condensation you spotted in the attic or crawl space. We walk the space, measure what we are looking at, and explain what needs to happen. If there is wet insulation or moisture in the substrate, we tell you straight: we fix the moisture first or we walk away. We write you an estimate with the R-value and thickness specified, the square footage or board footage, and the price. No surprises.
The work itself depends on the job. An attic foam spray in a Fenton ranch takes a day or two. A crawl space is longer because we have to work low and tight. If you have old insulation that has to come out first, we remove it and haul it. During the spray, we run mechanical ventilation to move fumes out of the house. You and your family stay out of the space during the cure, which is typically twenty-four to forty-eight hours. That is not a guess; it is the manufacturer's re-entry window, and we follow it exactly.
When we are done, we clean up. Your property is left the way we found it, minus the air leaks and the missing insulation.
Pricing for spray foam in Fenton depends on the size of the space, the R-value you need, and whether you are going closed cell or open cell. A typical attic spray in a Fenton ranch runs from $1.50 per square foot and up, depending on thickness and coverage. Wall injection foam for a retrofit runs from $2 per square foot. A crawl space starts at $2,500 and goes up with the square footage and the depth of the space. If you have insulation that has to come out first, add $950 and up for removal. The biggest cost factor is always the R-value and thickness specified in the code at your address, combined with the area you are covering and whether the substrate is clean and dry. Call us at (314) 912-1801 for a free estimate. We will measure the space, tell you what the code requires in Fenton, and price it fairly.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Fenton and nearby areas.
