Hamilton County, TN & North Georgia · IECC Climate Zone 4A Specification
Metal Building, Pole Barn & Barndominium Spray Foam
Closed-cell spray foam for steel walls and roof decks that stops metal condensation and sweating, controls shop climate, and seals agricultural and red-iron buildings across the Tennessee Valley.
Quick answer
Closed-cell spray foam for steel walls and roof decks that stops metal condensation and sweating, controls shop climate, and seals agricultural and red-iron buildings across the Tennessee Valley. Steel sheeting drops below the dew point almost every humid summer night in the valley, so a metal shop sweats and drips from condensation. Closed-cell foam against the metal skin breaks the dew point problem and adds real R-value.
Scope of work
- ✓Closed-cell spray foam on metal walls and roof decks
- ✓Condensation and sweating control on steel skin
- ✓Shop and barndominium climate control
- ✓Agricultural and red-iron pole-barn applications
- ✓Open/closed-cell hybrid for conditioned living quarters
- ✓Vapor and air barrier for the whole shell
Performance in IECC Climate Zone 4A
Steel sheeting drops below the dew point almost every humid summer night in the valley, so a metal shop sweats and drips from condensation. Closed-cell foam against the metal skin breaks the dew point problem and adds real R-value.
What drives project pricing
| 40x60 shop turnkey (walls + roof) | Typically $6,500–$15,500 (starter roof condensation seal from $4,000) |
|---|---|
| Closed-cell roof deck only | Per sq ft of roof deck ($1.75–$2.75/sq ft) |
| Living quarters / barndominium shell | $12,000–$18,000 whole-building package |
Ranges are typical for the Chattanooga market before incentives; a locked quote needs an on-site measurement.
What a complete quote includes
- ✓Building dimensions and steel/gauge review
- ✓Walls vs. roof vs. both recommendation
- ✓Conditioning plan for living or workshop space
- ✓Condensation-control scope
- ✓Timeline around your build schedule
Real Transformation Results
Sweating Corrugated Steel vs. Closed-Cell Monolithic Barrier
Commercial & Shop
Bare metal roofs sweat profusely in Tennessee humidity, dripping condensation on tools, equipment, and inventory. 2 inches of closed-cell foam permanently stops condensation and provides structural shear strength.
Frequently asked questions
- How much does spray foam cost for a 40x60 metal shop?
- A 40x60 shop at 2 inches of closed-cell on walls and roof typically runs $6,500–$15,500 turnkey depending on access, height, and whether the roof deck is sprayable. A site visit gives you a locked number.
- Will spray foam stop my metal roof from sweating?
- Yes — closed-cell foam applied directly to the underside of the roof deck keeps the metal above the dew point so condensation stops. This is the single most effective fix for a sweating steel roof.
Get a free on-site estimate
Fast quotes, honest recommendations, and no obligation. We'll match you with a vetted local insulation and crawl space specialist for your project.