Acoustic Doors

When sound connects with a barrier such as a door, energy from the sound vibrations transfers to the door. The mass, damping and stiffness of the barrier determine its resistance to the passage of sound waves. The greater the mass, the less sound is transmitted through the barrier. Stiffness is also a factor in sound transmission. The design of the Hallmark Group’s acoustic door-sets carefully considers all the factors that affect door sound reduction, to create a product that performs superbly. 

A door’s acoustical performance is referred to as its sound transmission class (STC) or STC rating. The higher the STC value, the better the performance as shown in this chart.

The Hallmark Group has a specialist range of acoustic door designs up to and beyond STC41. It includes fire-rated, single and pair doors and interconnecting door-sets. Please contact our engineers at any time to discuss your acoustic door requirements.