Steel Exterior Doors (2026)
Steel exterior doors provide the highest security and best value among entry door materials. They feature a polyurethane foam core for good insulation and come in a variety of panel designs with decorative glass options. Factory-applied finishes resist peeling and fading.
Key Features
- Superior security strength
- Polyurethane foam insulation
- Dent-resistant 24-gauge steel
- Factory-primed finish
- Fire-rated options available
Specifications
Applications
- Front entry
- Side entry
- Garage-to-house entry
- Rental properties
- Commercial buildings
Installation Overview
Install pre-hung unit in rough opening. Shim and level the frame, secure with screws through the jamb. Install deadbolt and lockset. Seal perimeter with exterior caulk.
Pros & Cons
Pros
- ✓ Most affordable exterior door option
- ✓ Best security ratings
- ✓ Good insulation value
- ✓ Fire-rated options
Cons
- ✗ Can dent on impact
- ✗ May rust if finish is scratched
- ✗ Conducts cold in extreme temperatures
- ✗ Less attractive than fiberglass or wood
Top Brands
Code Requirements
20-minute fire rating required for garage-to-house doors per IRC R302.5. Must meet energy code U-factor requirements. Check local wind load requirements.
Buying Tips
Steel doors offer the best value for budget-conscious buyers. Choose 24-gauge steel for residential use. Add a deadbolt with a reinforced strike plate for maximum security.
Frequently Asked Questions
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