How to Choose the Right Core Material for Hollow Metal Doors

Selecting the right core material for hollow metal doors is crucial for performance, durability, and security. Different core types offer unique benefits depending on the application—whether for fire resistance, soundproofing, or structural strength. This guide breaks down the key options to help you make an informed decision.

Common Core Materials for Hollow Metal Doors

1. Honeycomb Paper Core

Pros: Lightweight, cost-effective, and suitable for standard interior doors.

Cons: Limited sound insulation.

Best for: Non-critical partitions where weight and budget are concerns.

2. Polyurethane Foam Core

Pros: Excellent thermal and sound insulation, moisture-resistant.

Cons: Lower fire resistance compared to mineral cores.

Best for: Exterior doors or environments requiring temperature control (e. g. , cold storage).

3. Mineral Wool/Fire-Rated Core

Pros: High fire resistance (up to 3-hour ratings), soundproofing, and durability.

Cons: Heavier and more expensive.

Best for: Fire-rated doors in commercial buildings, hospitals, or schools.

Key Considerations When Selecting a Core

High requirements: Mineral cores are ideal for fire-rated doors.

Soundproofing: Polyurethane or mineral wool cores reduce noise transmission.

Budget: Honeycomb cores are economical for low-traffic interiors.

Conclusion

The right core material depends on your project's requirements. Prioritize fire ratings, acoustics, and security needs to ensure optimal performance. For expert guidance, consult with a trusted manufacturer Call/WhatsApp: +86 190 2124 2080 Email: jennywu@ulfiredoormfg. com.