Spray Foam Insulation in Chattanooga, TN

Chattanooga summers run hot and humid, winters swing cold, and fiberglass leaves the air leaks that drive your power bills up and your comfort down. Foametix is veteran-owned and locally operated, and we've sealed homes and buildings across the Tennessee Valley for more than 17 years — Chattanooga is home base.

From historic houses in St. Elmo and North Shore to new construction across Hamilton County, the fix is the same: seal the leaks fiberglass can't, with open- or closed-cell spray foam matched to your space.

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Why Chattanooga homes lose so much energy

Chattanooga sits in a mixed-humid climate zone, which is the worst of both worlds for a poorly sealed house. From June through September, attic temperatures climb past 130°F and push that heat down into your living space, so your AC never catches up. In winter, cold snaps pull warm air straight out through the same gaps. The result is the pattern we hear on nearly every call: a hot upstairs, a cold room over the garage, and a power bill that climbs every year.

Two things make it worse here than the national average. First, a large share of homes across Hamilton County sit on vented crawl spaces that breathe humid outside air all summer — that moisture rises into the floor system and the rest of the house. Second, older neighborhoods like Highland Park, St. Elmo, and parts of Red Bank were built with little or no wall insulation, and the fiberglass that is there has usually sagged, compressed, or been chewed up by pests. Fiberglass slows heat but does nothing to stop air movement, and air movement is where the energy and the comfort go.

WE CAN DO THEM BOTH

Why Chattanooga chooses Foametix

We're building-science people, not salespeople. Insulation only works when it's matched to the application, so we look at your attic, crawl space, and walls as one system — heat, air, and moisture together — and recommend what your house actually needs.

  • Veteran-owned and locally operated — no franchise fees, no national call center. The people who quote your job are the people who show up to do it.
  • 17+ years in the Tennessee Valley, with five full-time crews.
  • 4.9 stars across 75+ Google reviews — the words that come up over and over are clean job sites, honest billing, and crews that respect your home.
  • The quote is the bill. The number we write is the number you pay.
  • Deep bench. Our work is grounded in decades of hands-on insulation expertise that runs through the family — it's how we got into this and why we do it right.


Lighter and less dense, open-cell foam expands to fill gaps and air-seals while staying vapor-permeable. It's the common choice for attic rooflines and interior walls in Chattanooga homes, and it doubles as excellent sound dampening — a softer, lower-cost option at roughly R-3.7 per inch.

Open-Cell Spray Foam

Denser and rigid, closed-cell foam delivers the highest R-value — around R-6.5 per inch — and acts as its own moisture and vapor barrier while adding structural strength. It's what we use in crawl spaces, rim joists, metal buildings, and exterior applications where stopping moisture matters most.

Closed-Cell Spray Foam

  • Is spray foam insulation worth it in Chattanooga?

    For most homes, yes. In our mixed-humid climate, the biggest energy losses come from air leaks and attic heat, and spray foam is the only insulation that air-seals and insulates in one step. That's where the comfort and the lower bills come from.

  • Open-cell or closed-cell — which is better?

    Neither is "better" on its own; they do different jobs. Open-cell is common on attic rooflines and interior walls; closed-cell is used in crawl spaces, rim joists, and metal buildings where moisture control and strength matter. We match the type to the space.

  • Will spray foam help with crawl space humidity?

    Yes. Closed-cell foam and a sealed (encapsulated) crawl space stop humid outside air and ground moisture from getting in, which protects your floors and air quality — often without needing a dehumidifier.



  • How long does spray foam last?

    Properly installed, it lasts the life of the home. Unlike fiberglass, it doesn't sag, settle, or lose R-value over time.

  • Is spray foam safe?

    Once it's fully cured, it's inert and safe. Installation is handled by trained crews with the right equipment and ventilation.

  • Do you remove old insulation?

    Yes. We remove old, wet, or pest-damaged insulation and install the new system with the same crew — you're not coordinating two companies.

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