The 30-Second Verdict
Fiberglass impact doors are the best choice for Florida — they resist warping in heat and humidity, don't rust in coastal air, and are available in wood-grain textures that rival real wood aesthetics.
Head-to-Head Breakdown
Fiberglass Impact Entry Door
Pros
- Won't warp, rot, or rust in Florida's heat and humidity
- Available in wood-grain textures — high-end appearance
- Better thermal insulation than steel
- Low maintenance — no painting required typically
Cons
- Higher cost than steel — $2,000–$5,000+ installed
- Impact on cost if damaged — harder to repair than steel
- Premium fiberglass doors require skilled installation
Steel Impact Entry Door
Pros
- Lower cost than fiberglass — $1,500–$3,500 installed
- Strong dent resistance for Florida's debris impact
- Good insulation with foam core
- Wide range of styles available
Cons
- Can rust at coastal Florida properties without maintenance
- Can warp in extreme Florida heat if improperly finished/maintained
- Requires periodic painting to prevent rust
Side-by-Side Comparison
| Fiberglass Impact Entry Door | Steel Impact Entry Door | |
|---|---|---|
| Cost Installed | $2,000–$5,000+ | $1,500–$3,500 |
| Miami-Dade NOA | Available for qualifying products | Available for qualifying products |
| Wind Rating | 150+ mph (qualifying fiberglass) | 140–160 mph (qualifying steel) |
| Coastal Salt Air | Excellent — no rust risk | Moderate — requires proper finish and maintenance |
| Heat Warping | Very low — minimal thermal expansion | Moderate — dark steel in FL sun can warp over time |
| Maintenance | Minimal — recoat every 10–15 years | Paint/seal every 5–7 years coastal |
| Thermal Efficiency | Better — fiberglass is less conductive | Good with foam core |
| Best For | Coastal FL, premium entry, low maintenance | Budget-conscious, inland FL, rental properties |
Frequently Asked Questions
Does Florida require impact-rated entry doors?
In wind-borne debris regions (most of coastal Florida and areas with 130+ mph design wind speed), entry doors must meet Florida Building Code impact requirements. A Miami-Dade County Notice of Acceptance (NOA) or Florida Product Approval is required for compliance.
How much does an impact door cost in Florida?
Basic steel impact door with frame and installation: $1,500–$2,500. Quality fiberglass impact door with frame and installation: $2,500–$5,000. Double impact door entry or impact French doors: $4,000–$10,000. Labor typically runs $500–$1,500 for door replacement in Florida.