Chesterfield's two-story homes from the 1980s onward sit on walkout basements with vaulted great rooms and bonus spaces that struggle to hold temperature year-round, and our team has been sealing and insulating those spaces since 2012.
A cooling bill that climbs into three figures by July, a bedroom over the garage that never warms up, or condensation creeping across your attic framing in spring are the calls we answer most often in 63017. Spray foam insulation and air sealing stop the leaks that central air and heating cannot fix alone, and we know exactly where Chesterfield homes lose their grip on temperature.
Spray Foam Insulation in Chesterfield (63017)
Chesterfield's newer construction and subdivisions carry cathedral ceilings, open floor plans, and complex rooflines that leave rim joists, band joists, and attic spaces poorly insulated or left empty by the original builder. The mixed-humid climate here means your attic temperature swings from 130 to 150 degrees Fahrenheit in July down to the teens in January, and that thermal shock finds every gap in the envelope. Wall cavities in two-story frames often sit unfilled. Bonus rooms over garages, finished spaces under vaulted ceilings, and crawl spaces beneath walkout basements collect moisture in spring and sweat in summer if the air barrier is not sealed tight. Rim joists where the rim band meets the foundation wall are a classic Chesterfield heat and moisture leak, and spray foam closes them completely.
We have been spray foaming attics, walls, crawl spaces, and rim joists across the St. Louis area and Chesterfield since 2012. We bring fully insured crews, measure every job on site, and write estimates with R-value and thickness specifications so you know what you are paying for.
Our services in Chesterfield
- Attic Spray Foam Insulation in Chesterfield · Open-cell roof-deck foam turns an attic that bakes at 140°F in July and freezes…
- Closed Cell Spray Foam Insulation in Chesterfield · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Chesterfield · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Chesterfield · Injection foam fills closed frame walls through small drilled ports…
- Crawl Space Spray Foam Insulation in Chesterfield · Closed-cell foam on crawl space walls and subfloors ends the cold floors of…
- Rim Joist & Band Joist Spray Foam in Chesterfield · Basement rim joists leak more cold air than almost anything in a St. Louis…
- Garage Spray Foam Insulation in Chesterfield · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Chesterfield · Closed-cell foam stops a Missouri metal building from sweating in spring and…
- Commercial & New Construction Spray Foam in Chesterfield · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Chesterfield · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Chesterfield · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Chesterfield · Top plates; can lights; chimney chases and attic hatches leak more heated and…
How a Job Works in Chesterfield
We start with a free on-site assessment. We walk your attic, crawl space, or wall cavities, look for moisture, damp insulation, or air leaks, and talk through what open cell or closed cell foam will do for your comfort and your bills. If old insulation has to come out first, we tell you that upfront and price the removal separately. We answer your questions about R-value, thickness, and how the work fits your home and your schedule.
On the day of the spray, our team sets up mechanical ventilation, controls the temperature and humidity in the space, and applies the foam in controlled passes to hit the thickness and density the job calls for. If you are home, we give you a clear re-entry window of twenty-four to forty-eight hours before the space is safe to occupy again. We clean up as we go and leave your property ready to use.
Once the foam cures, we do a final walkthrough with you so you can see the coverage and ask any last questions. That written estimate with R-value and thickness becomes your record of what was installed.
Attic spray foam in Chesterfield typically runs from $1.50 per square foot for open cell to $1.20 per board foot for closed cell, depending on the thickness and R-value your attic needs. A 1,500-square-foot attic with four inches of closed cell foam might land in the $3,500 to $5,000 range. Wall injection foam for a Chesterfield two-story often starts around $2 per square foot and depends on how many cavities need filling and whether any old insulation has to come out first. Rim joist and band joist sealing starts at $650 and scales with how much perimeter you have. Crawl space spray foam starts at $2,500 and can run higher if moisture has to be addressed or if the space is large. Insulation removal runs from $950 and up depending on the volume and condition. The biggest cost drivers are always the area to cover, the R-value and thickness you want, whether you are using open or closed cell, and how much old insulation has to come out before we spray. Call us at (314) 912-1801 for a free estimate with no pressure and no obligation.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Chesterfield and nearby areas.
