Oakville's 1960s and 1970s brick ranches and split-level homes sit on basements and carry original attics that bake at 130 to 150 degrees in July and plummet into the teens each January. St. Louis Spray Foam Insulation has been sealing and insulating those spaces since 2012, and we know exactly why your heating and cooling bills climb every season.
Homeowners in Oakville (ZIP 63129) call us because the brick walls hold no cavity insulation, the rim joists leak cold air into finished basements, and the attics above those split-level bedrooms stay drafty no matter how much blown-in you pile in. We spray foam the places that matter, and we do it right the first time.
Spray Foam Insulation in Oakville (63129)
Oakville's housing stock tells the story. Those brick ranches and split-levels from the 1960s and 1970s were built with solid multi-wythe brick walls, poured or block basements, and attics that were never properly sealed or insulated. The brick itself is beautiful and durable, but it conducts cold and heat straight through. The basement rim joists where the band board sits on the foundation are wide open to outdoor air. The attic has gaps around the chase, the furnace vent, the plumbing stack, and the electrical penetrations. In summer, the Mississippi River humidity drives moisture into the attic from below. In winter, warm indoor air escapes through those same gaps and condenses on the cold roof deck or in the rim joist cavity. A room over the garage or at the far end of a duct run never reaches temperature. The basement stays damp or cold. The heating bill arrives and you ask yourself why.
We have been sealing and insulating Oakville homes since 2012. We know the era, the construction type, the access challenges in a tight attic or crawl space, and the difference between a quick fix and a job that actually holds. Closed cell foam stops air and moisture dead. Open cell foam breathes and costs less when the priority is air sealing on a budget. We write every estimate with R-value and thickness specified, so you know what you are paying for and the building official knows what you had installed.
Our services in Oakville
- Attic Spray Foam Insulation in Oakville · Open-cell roof-deck foam turns an attic that bakes at 140°F in July and freezes…
- Closed Cell Spray Foam Insulation in Oakville · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Oakville · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Oakville · Injection foam fills closed frame walls through small drilled ports…
- Crawl Space Spray Foam Insulation in Oakville · Closed-cell foam on crawl space walls and subfloors ends the cold floors of…
- Rim Joist & Band Joist Spray Foam in Oakville · Basement rim joists leak more cold air than almost anything in a St. Louis…
- Garage Spray Foam Insulation in Oakville · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Oakville · Closed-cell foam stops a Missouri metal building from sweating in spring and…
- Commercial & New Construction Spray Foam in Oakville · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Oakville · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Oakville · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Oakville · Top plates; can lights; chimney chases and attic hatches leak more heated and…
How a Job Works in Oakville
We start with a free on-site assessment. You walk us through the problem: a room that will not heat, a cold basement, a damp attic, a heating bill that has become unaffordable. We climb into the attic, crawl under the house, look at the rim joist and the basement walls, and ask the right questions about moisture, existing insulation, and what has to come out before anything new goes in. We give you an honest answer and a written estimate with R-value and thickness. No surprises.
On the day of the job, we set up mechanical ventilation and establish a re-entry window of 24 to 48 hours. The smell of the uncured foam is real, and we do not pretend otherwise. We spray at the manufacturer ratio and drum temperature, control thickness pass by pass, and leave your attic or crawl space clean. If there is wet or contaminated insulation in the way, we remove it first. We do not spray over a wet substrate or a leaking roof. If the moisture has to be fixed first, we say so.
When the foam has cured and the mechanical ventilation is shut down, we walk through with you, show you the work, and leave your property clean. You stay out of the space for the stated re-entry window. After that, the attic or crawl space is yours to use again.
Oakville spray foam jobs run a range depending on what needs to be done. A typical attic top-up with open cell foam starts around $1.50 per square foot for the material and labor. Closed cell foam, which stops both air and moisture, runs from $1.20 per board foot. Wall injection foam for those brick cavities starts at $2 per square foot. A rim joist and band joist air seal on a basement starts at $650. If you have wet or contaminated insulation that has to come out first, insulation removal starts at $950, and full re-insulation with foam runs from $2,800 depending on area and thickness. The cost factors are straightforward: how much square footage or board footage, what R-value and thickness you need, whether you are using open cell or closed cell, what has to be removed, and how tight the access is. A free on-site estimate with no obligation is the only way to know the real number for your house. Call us at (314) 912-1801.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Oakville and nearby areas.
