Compare fiberglass, steel, and wood entry doors. Learn about multi-point locks, impact ratings, weatherstripping, and how to choose a door that balances security, durability, and curb appeal.
Fiberglass doors are the best all-around choice for most homes. They resist denting, won't rust, don't warp in humidity, and can realistically mimic the look of wood grain. Steel doors offer the highest security and are the most affordable option, but they can dent on impact and may rust if the finish is scratched. In coastal or humid climates, fiberglass is strongly recommended.
A multi-point locking system engages deadbolts or hooks at three or more points along the door frame -- typically at the top, middle, and bottom -- when you turn the handle or key. This distributes force across the entire edge of the door, making it significantly harder to force open compared to a single deadbolt. Multi-point locks also compress the weatherstripping evenly, improving the door's air seal and energy efficiency.
High-quality fiberglass entry doors can last 30-50 years or more with minimal maintenance. They do not rot, rust, or warp like wood or steel alternatives. The gel-coat finish may need refinishing every 10-15 years to maintain appearance, but the structural integrity of the door remains excellent for decades. Most manufacturers offer 25-year or lifetime limited warranties on fiberglass doors.
The most important energy-efficiency features are: a polyurethane foam-filled core (R-value of 6-8 for a standard 1 3/4-inch door), magnetic weatherstripping that creates a tight seal, an adjustable threshold with a compression seal to block drafts at the bottom, and insulated glass if the door has a window panel. A well-insulated entry door can be two to three times more efficient than a solid wood door.
Doors with glass panels add natural light to entryways and enhance curb appeal. Modern decorative glass options include tempered, laminated, and impact-rated glass that maintain security. For maximum security and insulation, a solid fiberglass or steel door performs best. A good compromise is a door with a small glass insert or sidelight panels, which provide light without sacrificing much security or energy efficiency.