No prescriptive crawl wall R-value
In zone 2, Georgia sets no prescriptive R-value for crawl space walls. The focus is on sealing: a closed crawl space with a sealed Class 1 vapor retarder.
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Attic & Crawl Space · Bryan County, GA
Attic & Crawl Space Insulation in Bryan County, GA
NJ Spray Foam LLC insulates attics and crawl spaces across Bryan County, GA. In coastal zone 2A, the priority is keeping humid air out of attics and crawl spaces.
- Bryan County 31324, 31321, 31308
- 10 years of experience
- Climate zone 2A
Attic & Crawl Space Insulation in Bryan County
What to know in Bryan County
Attic heat
Long, hot summers make attic ducts work hard. Roof-deck foam brings them inside the conditioned space.
Ground moisture
Low, flat lots can keep crawl spaces damp; sealing the ground and walls limits moisture moving into the home.
Attic & Crawl Space Insulation services we offer in Bryan 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
Bryan County insulation code minimums (zone 2A)
Insulation in new homes and additions is inspected under Georgia's state energy code by the city or Bryan County, depending on the address. We confirm the office before quoting.
| Location / item | Limit |
|---|---|
| IECC climate zone | 2A (hot, 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 | No prescriptive R-value in zone 2 |
| Air leakage test on new homes | Under 5 ACH50, by a certified verifier |
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 Bryan County: FAQ
Do crawl space walls need insulation in Bryan County?
Georgia sets no prescriptive R-value for crawl space walls in zone 2. Sealing the crawl space and the ground is the main step.
What attic R-value applies?
R-38 on the attic floor or R-20 of spray foam at the roof deck.
Can spray foam help with attic condensation?
Yes. Sealing the roof deck keeps humid air off cold ducts, where condensation starts.
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Ready to insulate in Bryan County?
NJ Spray Foam LLC installs attic & crawl space insulation across Bryan County and nearby areas. Send your address and photos to get started.