Florissant's 1950s and 1960s brick-veneer ranches sit on block basements with frame walls hidden behind the veneer and thin original attics that swing from 130 degrees in July to the teens in January. The empty wall cavities and flattened attic insulation in homes across 63031 are the reason homeowners in Florissant call St. Louis Spray Foam Insulation.
Your home was built in an era when insulation was an afterthought. The brick veneer looks solid from the street, but the frame walls behind it have no cavity fill, the rim joists where your block basement meets the band board leak air and cold, and the attic above your head loses heat so fast in winter that your furnace runs constantly. We have been serving Florissant and the inner-ring suburbs since 2012, and we know exactly what these houses need.
Spray Foam Insulation in Florissant (63031)
A Florissant ranch or split-level built between 1950 and 1970 presents three insulation problems that spray foam solves directly. First, the brick veneer hides empty frame walls. Blown-in insulation cannot reach them without cutting holes in the brick or drywall. Closed-cell or open-cell spray foam injected through small ports fills those cavities completely and seals the air leaks around the studs and headers at the same time. Second, the original attic insulation has settled to half its R-value and sits on a ceiling with gaps around the hatch, the ductwork, and the rim where the roof meets the top plate. Spray foam on the roof deck or the attic floor seals those air leaks and brings the attic back to code. Third, the rim joist and band board where your block basement meets the first floor is a thermal bridge and an air leak. Spray foam there stops the cold from radiating into the room above and the basement below.
We have insulated hundreds of homes in Florissant and Ferguson, Webster Groves and Kirkwood. We understand block basements, balloon framing, and the moisture that rides the humidity from the Mississippi River valley in summer and the cold that settles into a basement in January. We bring the right foam type for the job, the right thickness and R-value for your code, and the crew discipline to install it correctly.
Our services in Florissant
- Attic Spray Foam Insulation in Florissant · Open-cell roof-deck foam turns an attic that bakes at 140°F in July and freezes…
- Closed Cell Spray Foam Insulation in Florissant · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Florissant · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Florissant · Injection foam fills closed frame walls through small drilled ports…
- Crawl Space Spray Foam Insulation in Florissant · Closed-cell foam on crawl space walls and subfloors ends the cold floors of…
- Rim Joist & Band Joist Spray Foam in Florissant · Basement rim joists leak more cold air than almost anything in a St. Louis…
- Garage Spray Foam Insulation in Florissant · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Florissant · Closed-cell foam stops a Missouri metal building from sweating in spring and…
- Commercial & New Construction Spray Foam in Florissant · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Florissant · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Florissant · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Florissant · Top plates; can lights; chimney chases and attic hatches leak more heated and…
How a Job Works in Florissant
We start with a free on-site assessment. We walk your attic, basement, and the walls you want to insulate. We measure the area, ask about your comfort complaints, and explain what spray foam will and will not fix. We give you a written estimate with the R-value and thickness specified, the foam type (open cell or closed cell), and the price. No surprises, no upsell.
On the day of the work, our crew sets up mechanical ventilation in your home. Spray foam releases volatile organic compounds during cure, and we pull fresh air through the house and exhaust it outside for the duration of the job. We tape off the areas we are not spraying so the foam lands where it belongs. We spray in passes no thicker than two inches at a time, maintaining the manufacturer ratio and drum temperature. If we find wet insulation, damp framing, or a roof leak, we stop and tell you what has to be fixed first. We do not spray over moisture. When the foam is cured, we trim the excess, install the thermal barrier (drywall or other fire-rated material) if the code requires it, and clean up. You can re-enter the treated spaces within twenty-four to forty-eight hours.
Your home is occupied during the work, and we respect that. We coordinate around your schedule, your HVAC system, and any other trades on site.
Spray foam pricing in Florissant depends on the area to cover, the R-value and thickness you need, the foam type (open cell runs about $0.55 per board foot, closed cell about $1.20 per board foot), and what has to come out first. An attic foam job on a typical Florissant ranch runs from $1.50 per square foot for open-cell foam to higher for closed cell. Wall injection foam costs about $2 per square foot. A rim joist and band board spray starts around $650. A full crawl space starts around $2,500. If you have old, wet, or contaminated insulation that has to be removed, add $950 and up. The best way to get a real number is a free estimate. Call us at (314) 912-1801, and we will walk your home, measure the spaces, and give you a price in writing.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Florissant and nearby areas.
