Acoustic Doors for High-Performance Sound Isolation
Engineered steel, STC-rated doors designed to maintain personnel and equipment access while controlling sound transmission across professional acoustic walls, studios, industrial enclosures, and specialist facilities
What Is a High-Performance Acoustic Door?
A high-performance acoustic door is an engineered doorset designed to control airborne sound while maintaining reliable operation and access. Unlike a standard architectural door, it combines a high-performance steel leaf with an engineered frame, acoustic seals, hinges and hardware to provide consistent sound isolation when closed. Noise-Lock® doors are available in a range of configurations and acoustic ratings to suit different architectural, industrial and security applications.
How Acoustic Doorset Performance Is Achieved?
Acoustic performance is determined by how the individual components work together as an integrated system. An acoustic door can only perform as intended when it is installed as part of a suitably engineered acoustic envelope.
The walls, ceilings and other building elements surrounding the doorset should provide acoustic performance appropriate to the required level of sound isolation.
For desired results, Noise-Lock® doorsets should therefore be integrated with professionally engineered acoustic wall and ceiling systems, ensuring that the surrounding structure does not become a weaker path for sound transmission.
Save 30 Minutes on Every IAC Acoustic Door Installation!
Pre-assembled acoustic doors reduce average installation time by at least 30 minutes compared with conventional kit doors. For projects with multiple doors, these savings can significantly reduce overall installation costs.
Our Acoustic Door Systems
A comprehensive range of high-performance steel acoustic doors designed for architectural, industrial and security applications. Noise-Lock® and Super Noise-Lock® acoustic doors can be engineered with different acoustic ratings, frame configurations, sealing systems, hardware and access-control options to meet project-specific requirements.
Single-leaf
Acoustic
Doors
Acoustic single-leaf swing door designed to provide sound isolation up to STC 64 for personnel access in demanding industrial, medical, and architectural acoustic environments.
Double-leaf
Acoustic
Doors
Acoustic double-leaf swing door providing up to STC 64 for large opening sound isolation for demanding industrial, medical and architectural acoustic applications.
Sliding
Acoustic
Doors
Sliding acoustic doors provide a space-efficient solution for special opening requirements while retaining all the performance advantages of Noise-Lock technology.
Custom
Acoustic
Doorsets
Bespoke acoustic doors provide custom-engineered solutions, including vision panels, specialist finishes, fire-rated, RF-shielded and automated configurations.
Configure Your Acoustic Doorset
Build the right door solution for your project. Choose from a range of options to match your technical and design requirements. Select your door type and model, frame and threshold, fire rating, opening direction and hardware. Define the required door and wall dimensions, add an integrated acoustic vision panel, and customise the finish, colour and leaf/frame appearance. Finally, specify the installation environment and configuration to complete your door setup.
Once submitted, the IAC team will review your project requirements and provide a tailored acoustic doorset recommendation and quotation.
Noise-Lock® Acoustic Doors and Doorsets
Noise-Lock is IAC's range of high-performance steel acoustic doors for situations where sound must be reliably contained, and where the door integrates into Moduline acoustic rooms, industrial noise enclosures, studios and existing walls.
Noise-Lock® Acoustic Door Frame Structure
- Architrave
- Notch
- Wall
- Main Frame
- Fixing
- Plug Button
- Corridor Wall
- Door Frame
- L-Shaped Architrave
- Fixing
Engineered, Factory-Assembled Steel Door Set
Supplied factory assembled (leafs, frames, seals, hinges and hardware) so operational alignment and sealing are set before shipment; high-performance steel construction with leaf thicknesses of 64 mm, 89 mm and 127 mm depending on the model.
Self-Aligning Magnetic Seals and Cam-Lift Hinges
Self-aligning standard magnetic perimeter seals maintain consistent contact around the frame; cam-lift hinges (or block hinges) lift the leaf for clearance on opening and lower it into a controlled bottom seal on closing, without a raised threshold.
Acoustic Performance of Noise-Lock® and Super Noise-Lock® Doors
The range provides published ratings from Rw 50 / STC 51 to Rw 63 / STC 64, with octave-band sound-transmission-loss data from 63 Hz to 8 kHz. For requirements below Rw 50 / STC 51, refer to the IAC Noishield door range.
| Door Model | Acoustic Rating | Leaf Thickness |
Acoustic Seals |
Octave Band Centre Frequency, Hz | Weight | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rw | R'w | STC | NIC | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | ||||
| Sound Transmission Loss, dB | |||||||||||||||
| Noise-Lock® D-50 | 50 | 45 | 51 | 46 | 64 mm / 2½" | — | 22 | 26 | 46 | 50 | 52 | 52 | 58 | 51 | 44 kg/m² |
| Noise-Lock® D-52 | 52 | 47 | 53 | 48 | 64 mm / 2½" | — | 23 | 30 | 47 | 52 | 54 | 52 | 57 | 55 | 54 kg/m² |
| Noise-Lock® D-53 | 53 | 48 | 54 | 49 | 89 mm / 3½" | — | 23 | 32 | 52 | 53 | 53 | 52 | 62 | ≥62 | 78 kg/m² |
| Noise-Lock® D-59 | 59 | 54 | 61 | 56 | 89 mm / 3½" | — | — | 33 | 54 | 58 | 60 | 62 | 69 | — | 80 kg/m² |
| Noise-Lock® D-63 | 63 | 58 | 64 | 59 | 127 mm / 5" | — | — | 40 | 56 | 61 | 64 | 66 | 70 | — | 88 kg/m² |
| Super Noise-Lock® D-100 | 50 | — | — | — | 102 mm | Twin Seal | 25 | 42 | 52 | 54 | 51 | 60 | 57 | 59 | 69 kg/m² |
| Super Noise-Lock® D-200 | 55 | — | — | — | 150 mm | Triple Seal | 39 | 47 | 48 | 60 | 61 | 61 | 55 | 56 | 140 kg/m² |
Rw is a weighted laboratory sound-reduction index; R'w is the apparent value under installed conditions; STC is the single-number laboratory rating; NIC is the measured isolation between finished spaces. These descriptors are not automatically interchangeable, and octave-band data should be reviewed where low-frequency sources are involved.
Integration with IAC Acoustic Systems
Noise-Lock doors integrate with Moduline acoustic rooms and industrial noise enclosures, as well as studios, music rooms and existing wall constructions. This allows the door and surrounding acoustic elements to be coordinated as one complete system.
Engineering Design of Our Acoustic Doors
IAC Acoustics provides high-performance acoustic doors for complex projects requiring multiple capabilities, including sound isolation, fire ratings, blast resistance, RF shielding, CE marking, and SCIF / ICD 705 requirements.
Supported Acoustic Door Features
CE Marking
CE-marked acoustic doorsets support projects requiring conformity with applicable European construction product and doorset standards. Appropriate configurations can be specified to meet relevant regulatory and project requirements.
Fire Ratings
Where acoustic isolation must also provide fire protection, rated door assemblies can be incorporated into the overall design. UL, BS and EN fire-rated configurations are available for applications with specific fire performance requirements.
Blast Resistance
For facilities exposed to pressure events, blast-resistant door assemblies can be engineered to provide both acoustic isolation and structural protection. IAC Noise-Lock configurations are available with blast resistance ratings up to 3 psi.
RF Shielding
Electromagnetic shielding can be incorporated where controlled environments require protection from radio frequency transmission. IAC Noise-Lock doors can achieve RF shielding performance up to 100 dB, subject to the selected configuration and application.
SCIF / ICD 705
Secure facilities can incorporate specialist acoustic doors designed for SCIF applications and enhanced security requirements. IAC Noise-Lock systems can be specified for applications involving ICD 705, JAFAN 6/9 and TEMPEST requirements.
Custom Engineering
Complex projects can combine several performance requirements within a single engineered doorset. Acoustic isolation, fire, blast, RF shielding and security features can be integrated into a tailored solution designed around the specific needs of each application.
Acoustic Door Applications
Common applications for precise hemi free-field acoustic testing in controlled environments.
Industrial Acoustic Doors
Machinery & Equipment Rooms
High-performance acoustic doors for machinery rooms, mechanical equipment spaces and areas where industrial noise must be contained.
Industrial Plant Rooms
Sound-isolating doors for power plants, process facilities, manufacturing buildings and other high-noise industrial environments.
Engine & Equipment Test Facilities
Acoustic doors for engine test cells, equipment test rooms and specialist facilities requiring high levels of sound isolation.
Large Industrial Openings
Large acoustic door systems for industrial access openings where equipment movement and high-performance noise control are required.
Factory & Production Areas
Acoustic doors for manufacturing and production environments, helping separate noisy operations from adjacent working areas.
Architectural Acoustic Doors
Commercial Offices
Acoustic doors for offices, meeting rooms and professional spaces requiring improved speech privacy and sound separation.
Hotels & Public Buildings
High-performance doorsets for hotels, convention centres and public buildings where acoustic comfort and architectural finish are important.
Educational & Institutional Buildings
Acoustic doors for schools, universities and institutional facilities requiring separation between classrooms, studios and shared spaces.
Recording & Broadcast Studios
High-performance studio doors for recording, broadcast and production spaces where reliable sound isolation is essential.
Music & Performance Spaces
Sound-isolating doors for music practice rooms, rehearsal spaces, theatres and concert halls requiring controlled sound transmission.
Medical Acoustic Doors
Hospitals & Clinical Facilities
Acoustic doors for hospitals and clinical environments where sound control, patient privacy and reliable operation are essential.
Patient Rooms & Treatment Areas
Sound-isolating doors that help reduce noise transmission between patient rooms, treatment areas and adjacent clinical spaces.
Medical Imaging & Diagnostic Rooms
Specialist acoustic doors for diagnostic environments requiring controlled sound transmission and dependable room separation.
Audiology & Hearing Test Rooms
High-performance acoustic doors for audiology rooms and hearing test facilities where external noise can affect measurement conditions.
Medical Research Facilities
Acoustic doors for specialist medical and research environments requiring controlled acoustic conditions and sound isolation.
RF & Security Acoustic Doors
SCIF & Secure Facilities
Acoustic doors for secure environments requiring enhanced sound isolation, security performance and specialist door configurations.
RF & Acoustic Shielded Rooms
Specialist doors for shielded environments where acoustic isolation must be combined with protection against electromagnetic transmission.
Laboratories & Research Facilities
Acoustic doors for laboratories, research spaces and technical environments requiring controlled sound transmission and privacy.
Data Centers & Technical Spaces
Sound-isolating doors for data centres and technical rooms containing continuous mechanical, cooling and equipment noise.
Specialist Test & Measurement Rooms
Acoustic doors for controlled test environments where reliable sound isolation is essential to measurement accuracy and facility operation.
Related Case Studies
Discover how our acoustic products and solutions are applied in real-world projects across a range of industries and testing environments.
- 2026
- Europe
- 🔒
- Defense & Security
Secure RF-Shielded Acoustic Doors for SCIF
- 2011
- London, UK
- ARD TV & Radio
- Entertaiment & Recording
Architectural Acoustic Doors for Broadcast Studios
Why Choose IAC for Acoustic Doors?
IAC combines long-standing acoustic engineering experience, proprietary acoustic doors technologies, standards-led design, and turnkey delivery for turn-key projects worldwide.
Guaranteed Acoustic Performance
Noise control systems are engineered to achieve defined acoustic performance targets, with solutions developed around project-specific noise criteria and compliance requirements.
Application-Specific Engineering
Each solution is engineered for the application, taking account of equipment layout, access, ventilation, maintenance, cleaning and long-term operational requirements.
Rapid, Low-Disruption Installation
Installation methods are planned to minimise construction time, site disruption and interference with ongoing production and industrial operations.
Complete Project Delivery
From acoustic surveys and system design through manufacture, delivery, installation and commissioning, IAC can support the complete noise control project.
Modular & Relocatable Construction
Modular acoustic systems provide durable sound control with reduced structural weight, while panels and enclosures can be dismantled, reconfigured and relocated as operational requirements change.
FAQ
Frequently Asked Questions
If you do not find the answer to your specific technical question here, please contact our engineering team directly.
What acoustic performance can an IAC Noise-Lock door provide?
IAC Noise-Lock acoustic doors are available with published ratings from Rw 50 / STC 51 to Rw 63 / STC 64, with octave-band performance data available for individual models. Higher-performance Super Noise-Lock configurations can provide ratings up to Rw 67 / STC 69. Actual installed performance also depends on the frame, seals, threshold, wall construction and installation.
What should be used for acoustic requirements below Rw 50?
For acoustic requirements below Rw 50 / STC 51, IAC Acoustics provides the Noishield range. The appropriate door configuration should be selected according to the required acoustic performance and application.
What is the difference between Rw and R'w, and STC and NIC?
Rw is a weighted sound reduction index determined under laboratory conditions, while R'w is the apparent weighted sound reduction index measured under field conditions. STC is a single-number rating derived from laboratory sound transmission measurements, while NIC is a single-number rating for the measured sound isolation between two spaces in a building. These ratings are based on different standards and measurement conditions and should not be treated as directly interchangeable.
How does the bottom acoustic seal work?
IAC acoustic doors can use rising or cam-lift hinge arrangements that engage the bottom acoustic seal as the door closes. This provides effective sealing without requiring a permanently raised threshold across the doorway.
Are single- and double-leaf acoustic doors available?
Yes. IAC acoustic doors are available in single- and double-leaf configurations, with options for custom sizes, designs and specialist features such as vision panels, subject to the selected door construction and performance requirements.
Are fire-rated, blast-resistant and RF-shielded acoustic doors available?
Yes. Specialist IAC door configurations can combine acoustic performance with UL, BS or EN fire resistance, blast resistance and RF / EMI shielding. Shielded acoustic door solutions can provide RF shielding effectiveness of up to 120 dB, depending on the system and application.
Not sure which solution fits your requirements?
Our engineers will help you define the right acoustic test environment based on your application, standards, and constraints.
CONTACT OUR SPECIALISTS