Cool Roof Requirements: Costa Mesa vs Garden Grove
How do cool roof requirements rules compare between Costa Mesa, CA and Garden Grove, CA?
Costa Mesa and Garden Grove have similar restriction levels.
Costa Mesa, CA
Orange County
California Title 24 Part 6 energy standards require cool roof reflectivity for most new and replacement low-slope roofs in Orange County's climate zones 6, 8, and 10, covering all cities and unincorporated areas.
View full Costa Mesa rules →Garden Grove, CA
Orange County
California Title 24 Part 6 energy standards require cool roof reflectivity for most new and replacement low-slope roofs in Orange County's climate zones 6, 8, and 10, covering all cities and unincorporated areas.
View full Garden Grove rules →Key Facts Comparison
| Fact | Costa Mesa | Garden Grove |
|---|---|---|
| Code | CA Title 24 Part 6 | CA Title 24 Part 6 |
| OC zones | 6, 8, 10 | 6, 8, 10 |
| Trigger | 50% roof replacement | 50% roof replacement |
| Certification | CRRC rated product | CRRC rated product |
Highlighted rows indicate differences between cities.
Costa Mesa FAQ
Does my asphalt shingle roof need to be reflective?
Steep-slope residential requirements vary by climate zone. Many zones allow standard shingles; check the current Title 24 prescriptive table or use a performance compliance path.
Are minor roof repairs covered?
Repairs under 50 percent of the roof area generally do not trigger Title 24 cool roof requirements, but local jurisdictions may apply stricter rules.
Garden Grove FAQ
Does my asphalt shingle roof need to be reflective?
Steep-slope residential requirements vary by climate zone. Many zones allow standard shingles; check the current Title 24 prescriptive table or use a performance compliance path.
Are minor roof repairs covered?
Repairs under 50 percent of the roof area generally do not trigger Title 24 cool roof requirements, but local jurisdictions may apply stricter rules.
Compare other topics
See how Costa Mesa and Garden Grove compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool