Acoustic Steel Doors: Designing High STC Sound Enclosures for Plant Rooms & Auditoriums

The Mechanics of Airborne Sound Transmission

Sound waves travel through the path of least resistance. In standard commercial doors, 90% of acoustic leakage occurs through microscopic perimeter perimeter air gaps around the jambs, head, and threshold.

High Sound Transmission Class (STC) doors require a comprehensive acoustic envelope: high-density multi-layer internal dampening cores, structural mass, and compression acoustic gaskets that create an airtight perimeter seal.

Dual Automatic Drop Seals

To achieve maximum acoustic isolation without obstructing pedestrian wheeled traffic, acoustic doors incorporate automatic mechanical bottom seals that drop down securely against the finished floor only when the door latches shut.