Attics full of ductwork
Two-story Coweta homes often have long duct runs in the attic. Sealing the roof deck with spray foam keeps them out of summer attic heat.
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Attic & Crawl Space · Coweta County, GA
Attic & Crawl Space Insulation in Coweta County, GA
NJ Spray Foam LLC insulates attics and crawl spaces across Coweta County, GA. Newer homes lose comfort through attics full of ductwork; older homes in historic Newnan, Senoia and Grantville often sit over crawl spaces that were never sealed.
- Coweta County 30263, 30265, 30276, 30277, 30220
- 10 years of experience
- Climate zone 3A
Attic & Crawl Space Insulation in Coweta County
What to know in Coweta County
Historic homes over crawl spaces
Older homes near the downtowns of Newnan, Senoia and Grantville often have open crawl spaces. Floor insulation or a closed crawl space with insulated walls are both options.
Georgia's crawl space rules
Closed crawl space walls need R-13 cavity or R-5 continuous in zone 3A, a sealed Class 1 vapor retarder and a 3-inch termite inspection strip (R402.2.11).
Attic & Crawl Space Insulation services we offer in Coweta County
Insulation and air sealing for the two places Georgia homes lose the most comfort: the attic above and the crawl space below, with spray foam, blown-in insulation or both.
- Roof-deck spray foam for unvented attics
- Blown-in top-ups on the attic floor
- Removal of old or damaged insulation
- Crawl space wall and floor insulation
- Air sealing at top plates, chases and penetrations
Coweta County insulation code minimums
Insulation in new homes and additions is inspected under Georgia's state energy code by the city or by Coweta County, depending on the address. We confirm the office before quoting.
| Location / item | Limit |
|---|---|
| IECC climate zone | 3A (warm, humid) |
| Attic floor (ceiling) insulation | R-38, or R-30 at full depth over the top plates |
| Spray foam at the roof deck (unvented attic) | R-20 minimum on the trade-off path |
| Wood-frame exterior walls | R-13 |
| Unvented crawl space walls | R-13 cavity or R-5 continuous |
| Air leakage test on new homes | Under 5 ACH50, by a certified verifier |
| Georgia Power attic insulation rebate | Up to $300 (R-38 or less → R-49) |
Vented attic vs unvented spray foam attic
| Vented attic (insulate the floor) | Unvented attic (foam the roof deck) | |
|---|---|---|
| Where the insulation goes | On the attic floor | Under the roof deck and gable walls |
| Ducts and air handler | Stay in a hot attic | End up inside the conditioned space |
| Georgia code minimum | R-38 (R-30 at full depth) | R-20 air-impermeable on the trade-off path |
| Best for | Simple attics without HVAC equipment | Attics with ducts, equipment or storage |
Our attic & crawl space process
- 1
Inspection
We check insulation depth, ductwork, ventilation, moisture and access in the attic and crawl space.
- 2
Plan
Vented or unvented attic, floor or wall crawl space insulation, and the R-values each option needs in Georgia.
- 3
Removal if needed
Wet, compressed or contaminated insulation comes out before new work goes in.
- 4
Install
Spray foam, blown-in insulation or both, with air sealing at the gaps that leak most.
- 5
Final check
We confirm depth and coverage and leave the access points clean and closed.
Attic & Crawl Space Insulation in Coweta County: FAQ
Is roof-deck foam or blown-in better for my attic?
Roof-deck foam if ducts or the air handler are in the attic; blown-in to R-38 if the attic is clear and only needs depth.
Should my historic home's crawl space be closed?
It depends on drainage and moisture. We inspect and explain whether floor insulation or a closed crawl space makes more sense.
How long does the work take?
Most attic or crawl space projects take one to two days.
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Ready to insulate in Coweta County?
NJ Spray Foam LLC installs attic & crawl space insulation across Coweta County and nearby areas. Send your address and photos to get started.