Hazelwood's 1960s brick ranches and industrial-era homes sit in a mixed climate that demands honest insulation work. Between the airport and the Missouri River, your attic bakes at 130-150 degrees in July and drops into the teens come January, and most Hazelwood properties sit on basements or crawl spaces where moisture and temperature swings create real comfort and efficiency problems.
St. Louis Spray Foam Insulation has served Hazelwood (63042) and the surrounding St. Louis area since 2012. We understand the specific challenges of your neighborhood: closed walls with no cavity insulation, attics that leak heat and cool air, crawl spaces that sweat in spring, and the need to remove and replace failed insulation before anything new can work. We show up with written estimates that name the R-value and thickness we'll spray, we work with full insurance coverage, and we leave your property clean.
Spray Foam Insulation in Hazelwood (63042)
Hazelwood's housing stock is a mix of 1960s-70s brick ranches and older industrial-area properties, most built on poured or block basements. The ranches have attics with original fiberglass that has settled flat over fifty years, empty wall cavities where no insulation was ever installed, and crawl spaces that collect moisture from the high water table and humidity that rolls in from the Missouri River. The mixed-humid climate means your vapor drive flips with the seasons: outward through cold winters and inward through hot, wet summers. That means every assembly has to handle both directions, and damp or contaminated insulation has to come out before anything else can happen.
Our team has been installing spray foam and air sealing in Hazelwood and across the St. Louis area for over a decade. We know which walls have cavities you can reach, which crawl spaces need moisture handled first, which attics need removal before we can spray, and how to work in tight spaces and occupied homes. We coordinate with your schedule, manage the smell and ventilation during cure with mechanical air movement, and respect the re-entry window of twenty-four to forty-eight hours before your family or tenants move back in.
Our services in Hazelwood
- Attic Spray Foam Insulation in Hazelwood · Open-cell roof-deck foam turns an attic that bakes at 140°F in July and freezes…
- Closed Cell Spray Foam Insulation in Hazelwood · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
- Open Cell Spray Foam Insulation in Hazelwood · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
- Wall & Injection Foam Insulation in Hazelwood · Injection foam fills closed frame walls through small drilled ports…
- Crawl Space Spray Foam Insulation in Hazelwood · Closed-cell foam on crawl space walls and subfloors ends the cold floors of…
- Rim Joist & Band Joist Spray Foam in Hazelwood · Basement rim joists leak more cold air than almost anything in a St. Louis…
- Garage Spray Foam Insulation in Hazelwood · Garage ceilings under bonus rooms and walls shared with the house are…
- Metal Building & Barndominium Spray Foam in Hazelwood · Closed-cell foam stops a Missouri metal building from sweating in spring and…
- Commercial & New Construction Spray Foam in Hazelwood · Warehouses; offices; churches and production builders served on schedule.
- Insulation Removal in Hazelwood · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
- Insulation Replacement & Re-Insulation in Hazelwood · The full reset: old material removed; gaps air-sealed…
- Air Sealing in Hazelwood · Top plates; can lights; chimney chases and attic hatches leak more heated and…
How a Job Works in Hazelwood
We start with a free on-site assessment. You describe the problem: a room that never reaches temperature, a cooling or heating bill that has become unaffordable, condensation or damp insulation in an attic or crawl space, or insulation that has failed and needs to come out. We walk the property, measure the areas to be sprayed, check for moisture or contamination, and talk through your options. We leave you with a written estimate that names the R-value, thickness, and cost per square foot or board foot, plus what has to happen first.
On the day of the work, we set up mechanical ventilation to move air through the space during cure. If insulation has to come out first, we remove it and haul it away. We spray the foam to the thickness specified in your estimate, controlling the ratio and temperature on every pass. In Hazelwood's tight attics and crawl spaces, precision and patience matter more than speed. We clean up as we go and do a final walkthrough with you before we leave.
After the work, you let the foam cure for the full re-entry window. The smell will fade. The space will be ready to use once cured, and your heating and cooling will work harder and reach temperature faster because the air leaks are sealed and the insulation value is in place.
Pricing for spray foam in Hazelwood depends on what you need. An attic top-up in an existing space runs from $1.50 per square foot for open cell foam. Wall injection into closed cavities runs from $2 per square foot. A crawl space typically starts at $2,500 depending on size and moisture conditions. Rim and band joist sealing starts at $650. If insulation has to be removed first, add $950 or more depending on area and what's being hauled away. The key cost factors are the square footage to cover, the R-value and thickness you need (which the energy code and your comfort determine), whether you choose open or closed cell foam, and what prep work is required. We give you a firm price in writing before we start. Call us at (314) 912-1801 for a free estimate on your Hazelwood property.
✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Hazelwood and nearby areas.
