Attic Insulation Contractors in St. Louis, MO
Free consultation with our Insulation experts
Measured Depth
One-Day Installs
Sealed Attics
Attic Insulation Contractors Who Build a Stronger Top Floor
Check your roof the morning after a St. Louis snowfall. If your shingles are bare while the neighbors’ roofs are still white, warm air is leaking out through your ceiling. That same weak spot lets July heat pour back in, so the upstairs bakes and the AC runs from lunch until bedtime. As attic insulation contractors, we upgrade the layer at the top of the house, where your home insulation takes the hardest hits all year.
Foam Co. treats the attic as one working system. We close hidden air leaks first. Then we choose spray foam insulation, blown-in attic insulation, or batts based on your framing and goals. We also keep soffit airflow open so moisture can escape. The payoff is steady temperatures, smaller energy bills, and an HVAC unit that finally gets a break.


Sealed, Then Covered
Every attic insulation installation we do starts with air sealing. We seal top plates, recessed lights, and plumbing chases so conditioned air stays downstairs. Next, we install the right material at an even depth, with no compressed spots. Our attic insulation contractors also add baffles at the eaves. Clear vents help limit moisture and ice dams.

Comfort Every Season
Old, flattened fill from decades ago can’t hold back a 100-degree afternoon. Attic insulation replacement or a fresh top-up changes how your house feels. Bedrooms cool down faster in summer. Winter heat stays in the living room instead of drifting into the attic. Your furnace and AC cycle less, which also trims monthly energy bills.

Our R-49 Standard
Code minimums are a starting line for us. Foam Co. builds toward R-49 and measures depth with attic rulers, so you see exactly what you paid for. If you searched for an “attic insulation company near me,” you can rest assured we answer transparently about everything and handle everything. You never crawl over joists, haul bags, or breathe attic dust.
Testimonials
About Us
We’ve crawled through St. Louis attics from nearly every decade. Story-and-a-half bungalows hide cramped knee walls. Wide 1970s ranches often sit on a few inches of settled fill. Newer two-story builds may meet code on paper and still run hot upstairs. Knowing those patterns helps us plan house insulation that fits the structure in front of us.
We check permit needs by address, since St. Louis City and St. Louis County handle them differently. We also add approved thermal barriers wherever open-cell foam lines a roof deck. Your appointment starts when you pick, and we leave every room tidy. Learn more about our crew today.

Areas We Serve
If you’re searching for “attic insulation near me” from almost anywhere in the St. Louis metro, St. Charles County, or Southeast Missouri, our crews are likely close by. Our attic insulation contractors bring the same sealed, measured, one-day process to older city homes, suburban subdivisions, and farmhouses in small river towns. Scroll through our complete list of service areas to confirm we reach your street.
