STC Rated Acoustical Wood Doors for Sound Control
Engineered for sound resistance and performance. Our STC-rated doors provide superior control for any environment.
Superior Sound Control with High STC Rated Doors
Haley Bros high STC rated doors achieve acoustical performance up to STC 47, so spaces stay private and free of distraction.
Fire Rated Acoustical Door Options
Combine sound resistance with fire protection. Haley Bros fire rated acoustical doors are available with a 20-minute rating that’s both fire-rated and STC certified.*
*45-, 60- and 90-minute fire ratings are also available on this door line, but are not STC certified.
Custom Finishes and Sizes for Acoustical Doors
Haley Bros acoustical doors are built to your specifications, with a wide array of wood veneers, laminates and paint-grade finishes to choose from.
STC Door Product Details and Specifications
The Standard for Sound Control
Haley Bros. Acoustical Doors are engineered to control sound transmission and provide a quiet, comfortable environment. Featuring bond-to-core construction, where stiles and rails are bonded directly to a specialized sound-retardant particleboard core. This minimizes resonance and creates a solid sound barrier. Our doors are built to perform and are rigorously tested and certified to meet the most demanding performance requirements.
What Are STC Ratings for Doors?
STC ratings are a single number that determines how successful a door will be at blocking the movement of sound (including partitions and floor-ceiling assemblies). The higher the STC value, the better the rating and the better the performance.
A door’s ability to reduce noise is called its sound transmission loss (TL) effectiveness. TL is a value given in decibels (dB) which is determined by measuring sound pressure levels at a certain frequency in the source and receiving rooms. (See image using STC 39 as a sample.)
These values are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation.
Where STC Rated Doors Are Specified
Haley Bros architectural STC-rated doors are essential in environments where sound control affects privacy, comfort, or code compliance.
Where Noise Disturbs Focus or Privacy
Offices & Conference Rooms
Educational Facilities
Healthcare Facilities
Hotels & Hospitality
Where Sound Needs to Be Contained (or Kept Out)
Recording Studios & Broadcast Booths
Performing Arts Centers & Theaters
Music Rehearsal Rooms
Industrial & Manufacturing Plants
Data Centers & Server Rooms
Where Specific STC Ratings Are Required by Code or Design
Multi-Family Residential Buildings
Mixed-Use Developments
Specialized Facilities
To Enhance Overall Comfort & Well-being
In homes, especially for media rooms, home offices, or bedrooms adjacent to high-traffic areas.
Any unsealed gaps and clearances in door assemblies effectively cancel out the noise reduction benefits of STC rated doors. For example, 1/8″ clearances around the edges reduce the effective rating of an STC-52 door to STC-21!
Haley Bros. Architectural Doors are initially a good sound reducer, however, the door is just one piece of the equation. It is important to use the proper acoustical gasketing combinations to seal the gaps around the perimeter of the door opening. Ultimately, the hardware gasketing and perimeter sealing determine the sound rating that a door achieves.
Why Gasketing Matters on Sound Rated Doors
Sound waves travel through any opening with very little loss. While the amount of air flowing through a gap increases in proportion with the size of the gap (see Figure 1) the size of the gap in a sound barrier does not matter (see Figure 2.) A tiny hole transmits almost as much sound as a much larger gap.
Our acoustical doors have been tested with hardware packages from National Guard Products (NPG). These packages include:
Single Door Package Options:
Pair Door Package Options:
| Category | Details |
|---|---|
|
Door Thickness |
1-3/4″ thick |
|
Maximum Size |
Please consult Haley Bros. |
|
Surface Material |
Wood Veneer, High-Pressure Decorative Laminate (HPDL), Medium Density Overlay (MDO), or primed MDF (Medium-Density Fiberboard) |
|
Crossbands |
Medium Density Fiberboard (MDF) |
|
Vertical Edges (Stiles) |
Structural Composite Lumber (SCL) or Laminated Strand Lumber (LSL) as required with matching/compatible wood stiles, matching HPDL or primed edges. |
|
Horizontal Edges |
Structural Composite Lumber (SCL) or Laminated Strand Lumber (LSL) as required. |
|
Face/Core Assembly |
Type 1 adhesive |
|
Core Construction |
Proprietary Acoustical Sound Core |
|
Lite Openings/ Louvers |
Factory glazing recommended where allowed per tested assembly. Lite kit varies by STC rating. Louvers not allowed. |
|
Seals & Gaskets |
Option 1: Perimeter Gaskets: NGP 5075 Single Row, NGP 5060 Single Row, (2) NGP 60FP Corner Pads. Option 2: Perimeter Gaskets: NGP 5075 Single Row, NGP 5060 Single Row, (2) NGP 60FP Corner Pads. Option 3: Pemko – available upon request |
|
Factory Machining |
Must be factory machined for hardware as specified. |
|
Standard Bevel |
3° Bevel |
|
Finish |
All approved species available with water-based stain UV finish that meets or exceeds WDMA TR-8 and CARB, or primed |
|
Veneer Match/ |
Book and running match standard. Slip, center, balance or center balance available upon request |
|
Acoustical Rating |
STC 31-47. Consult Haley Bros. for lite, glass and cut out approvals |
|
Fire Rating |
20-minute fire rated |
|
Sustainability |
|
|
Quality Standards |
ANSI-WDMA I.S. 1-A, Industry Standards (Bonded Core) |
|
WDMA Performance Level |
Heavy duty |
|
Door Weight |
Weight varies by STC rating & core type; Consult with Haley Bros. |
|
Warranty |
Limited Lifetime, Interior use only. View Warranty |
Option 1: Automatic Door Bottom (installed)
Option 2: Door Shoe (shipped loose)
Option 1: Automatic Door Bottom (installed)
Option 2: Door Shoe (shipped loose)
Available Finishes for Acoustical Doors
STC Door Selector Dashboard
SILENCE
SECURITY
SANCTUARY
Frequently Asked Questions
STC stands for Sound Transmission Class, a single number that describes how well an assembly reduces airborne sound. A higher STC number means more sound is blocked. Haley Bros architectural STC-rated doors are offered with sound ratings up to STC 47.
It depends on how much privacy the room needs, and whether code or the design team specifies an STC value. The chart on this page groups typical applications, including offices, education, healthcare, and hotels and hospitality, so a specifier can match the rating to the space.
Yes, but only the 20-minute rating is both fire-rated and STC-certified. The 45-, 60- and 90-minute fire options are available on the same acoustical door line, but they are not STC-certified, so confirm which combination a project needs.
Sound travels through any gap in an opening, so the perimeter seal is as important as the door itself. Gasketing closes those gaps, which is why it is specified alongside the door on STC-rated openings.
Let’s Match the Right Acoustical Door to Your Sound Requirements
Whether you’re specifying a single opening or a multi-building project, Haley Bros can help you find the acoustical door that fits.
Contact us today for a quote, a sample, or help specifying the right STC rating.
