Sonic Access acoustic soundproof doors

Sonic Access acoustic doors are custom-made for industrial noise-control applications. Built from heavy sheet metal, they are available in personnel and double-door configurations. With comprehensive options and results tested at a NATA-accredited laboratory, they provide reliable, high-performance acoustic results.

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Superior noise control

Tested acoustic performance: Achieves Rw 46dB (personnel door) and Rw 45dB (double door)
Low-frequency result: 28.8dB at 100Hz for the Sonic Access personnel door
Test data: 51.6dB at 5000Hz for the Sonic Access personnel door
Double runner seals: Dual seals around the door perimeter help reduce leakage around the opening

Easy installation

SonicFix ready-to-fit design: Supplied pre-hung in a portal frame with factory-fitted hardware, so minimal on-site assembly is needed
Factory finish: Available factory-painted or powder-coated
Flexible installation: Compatible with concrete, metal, or timber support structures – no concrete casting required

High-performance acoustic core

80mm door thickness: Tested configurations achieved Rw 46 for the personnel door and Rw 45 for the double door
Heavy-duty construction: Made from heavy, solid sheet metals mounted within rigid sectional frames
High-mass composition: Heavy, solid steel construction enhances sound-blocking capabilities
Multi-layered design: Proprietary construction combining advanced materials and precision manufacturing
Perimeter seals: Reinforced steel frame with perimeter seals designed to minimise gaps around the door
Welded hinges: Heavy-duty ball-bearing welded hinges are used in the door construction

Versatile industrial applications

Plant rooms & machine rooms: Ideal for controlling noise from industrial machinery and equipment
Pump stations & public utilities: Supplied to pump stations, water treatment plants and critical infrastructure
Manufacturing facilities: Suitable for access points where industrial noise control is required
Control rooms & acoustic enclosures: Reduces industrial noise transmitted into control rooms and acoustic enclosures
Educational institutions: Schools, colleges, and universities requiring acoustic isolation
Defence & critical infrastructure: Supplied to defence and critical infrastructure facilities, including 70 doors at RAAF Base Williamtown
Customisable configurations: Available as personnel doors, double doors, or with specialised penetrations (e.g., gantry cranes)

Tested & compliant

NATA-accredited testing: Independently tested at the Applied Acoustics Laboratory, RMIT University (NATA Accreditation No. 1421)
Test standards: Tested to AS 1191-2002 and rated to AS/NZS ISO 717.1
Certified performance data: Frequency-specific results (100Hz to 5000Hz)
Test reports available: RMIT test reports from a NATA-accredited laboratory, available on request
Laboratory testing: Measured in RMIT’s reverberant sound transmission suite

Built to last

Heavy sheet metal construction: Durable materials engineered for long-term industrial use
Corrosion-resistant options: Available in galvanised steel, stainless steel, or aluminium finishes
Low-maintenance hinges: Heavy-duty ball-bearing hinges
Longevity assurance: Designed for years of reliable performance

Product	Rw (C;Ctr) rating	Key applications
Sonic Access personnel acoustic door	46 (-1;-4)dB	Personnel access points, control rooms, machine rooms, plant rooms, manufacturing facilities, educational institutions, and offices in high-noise environments
Sonic Access acoustic double door	45 (-1;-3)dB	High-noise industrial environments, pump stations, critical infrastructure, water treatment plants, acoustic enclosures, defence facilities, and applications requiring maximum noise isolation

Panel composition

Specification	Personnel door	Double door
Internal steel sheet	Heavy-duty steel	Heavy-duty steel
External steel sheet	Heavy-duty steel	Heavy-duty steel
Core material	High-density acoustic core	High-density acoustic core

Dimensions

Specification	Personnel door	Double door
Door width	Custom-made to specification	Custom-made to specification
Door height	Custom-made to specification	Custom-made to specification
Thickness	80mm	80mm
Size options	Custom sizing available	Custom sizing available
Customisation	Yes	Yes

Sealing system

Specification	Personnel door	Double door
Type	Double Runner Seals	Double Runner Seals
Perimeter sealing	Precision-sealed frame	Precision-sealed frame
Draught prevention	Yes	Yes
Vermin & dust protection	Yes	Yes

Surface treatment

Specification	Personnel door	Double door
Anti-corrosive treatment	Epoxy primer & paint	Epoxy primer & paint
Standard finish	Powder-coated/factory-painted	Powder-coated/factory-painted
Optional finishes	Galvanised steel, stainless steel, aluminium	Galvanised steel, stainless steel, aluminium
Colour options	Wide colour range available	Wide colour range available

Structural properties

Specification	Personnel door	Double door
Design type	Self-supporting rigid frame	Self-supporting rigid frame
Frame construction	Reinforced steel sectional frame	Reinforced steel sectional frame
Hinges	Heavy-duty ball-bearing welded hinges	Heavy-duty ball-bearing welded hinges
Installation type	SonicFix ready-to-fit (pre-hung in portal frame)	SonicFix ready-to-fit (pre-hung in portal frame)

1. Sound insulation testing

Tested to AS 1191-2002, with Rw determined to AS/NZS ISO 717.1
Testing conducted at the Applied Acoustics Laboratory, RMIT University (NATA-accredited facility)
Personnel door: Achieves Rw 46dB
Double Door: Achieves Rw 45dB
Laboratory-verified attenuation results available from 100Hz to 5000Hz

2. Acoustic performance data

Comprehensive frequency-specific Sound Transmission Loss (R dB) measured across all 1/3 octave bands (100Hz to 5000Hz)
Personnel door performance: 28.8dB @ 100Hz to 51.6dB @ 5000Hz
Double door performance: 26.6dB @ 100Hz to 49.3dB @ 5000Hz
Confidence levels documented for all frequency measurements

3. Available test documentation

Full RMIT test reports
Sound Transmission Loss (R dB) frequency tables
Applied Acoustics Laboratory, RMIT University test reports
Detailed acoustic performance specifications

Specification requirement	Details
Door type	Sonic Access acoustic door, type: [DOOR TYPE]
Acoustic performance	Door assembly to achieve: [REQUIRED ACOUSTIC RATING]
Fabrication	Door assembly is to be fabricated in accordance with Flexshield manufacturer specifications.
Installation	Door assembly is to be installed in accordance with Flexshield manufacturer specifications to achieve the specified acoustic performance.
Door size	As nominated in the project door schedule.
Handles and hardware	As nominated in the project door schedule and compatible with the specified acoustic performance of the door assembly.
Colour and finish	As nominated in the project door schedule.
Manufacturer	Flexshield
Technical enquiries	Phone 1300 799 969 or email enquiry@flexshield.com.au

Sonic Access acoustic doors – Sound transmission loss comparison

1/3 Octave Frequency (Hz)	Personnel door: R (dB)	Personnel door: 95% confidence (dB)	Double door: R (dB)	Double door: 95% confidence (dB)
100	28.8	2.8	26.6	2.8
125	30.7	2.1	35.2	2.4
160	36.7	1.5	37.8	1.8
200	38.9	1.2	38.4	1.7
250	41.2	1.0	40.9	0.9
315	42.3	0.9	43.5	0.7
400	42.0	0.8	43.4	0.7
500	42.2	0.5	42.1	0.7
630	40.9	0.6	42.2	0.6
800	44.5	0.5	44.5	0.5
1000	47.4	0.5	45.2	0.4
1250	47.9	0.3	45.8	0.4
1600	47.5	0.4	44.8	0.5
2000	46.9	0.4	45.9	0.6
2500	46.6	0.6	46.7	0.6
3150	48.1	0.5	49.3	0.6
4000	49.4	0.5	48.9	0.5
5000	51.6	0.6	49.3	0.5

Weighted sound reduction index:

Personnel door: Rw (C;Ctr) = 46 (-1;-4)dB
Double door: Rw (C;Ctr) = 45 (-1;-3)dB

Test method and rating: AS 1191-2002 | AS/NZS ISO 717.1

Superior noise control

Tested acoustic performance: Achieves Rw 46dB (personnel door) and Rw 45dB (double door)
Low-frequency result: 28.8dB at 100Hz for the Sonic Access personnel door
Test data: 51.6dB at 5000Hz for the Sonic Access personnel door
Double runner seals: Dual seals around the door perimeter help reduce leakage around the opening

Easy installation

SonicFix ready-to-fit design: Supplied pre-hung in a portal frame with factory-fitted hardware, so minimal on-site assembly is needed
Factory finish: Available factory-painted or powder-coated
Flexible installation: Compatible with concrete, metal, or timber support structures – no concrete casting required

High-performance acoustic core

80mm door thickness: Tested configurations achieved Rw 46 for the personnel door and Rw 45 for the double door
Heavy-duty construction: Made from heavy, solid sheet metals mounted within rigid sectional frames
High-mass composition: Heavy, solid steel construction enhances sound-blocking capabilities
Multi-layered design: Proprietary construction combining advanced materials and precision manufacturing
Perimeter seals: Reinforced steel frame with perimeter seals designed to minimise gaps around the door
Welded hinges: Heavy-duty ball-bearing welded hinges are used in the door construction

Versatile industrial applications

Plant rooms & machine rooms: Ideal for controlling noise from industrial machinery and equipment
Pump stations & public utilities: Supplied to pump stations, water treatment plants and critical infrastructure
Manufacturing facilities: Suitable for access points where industrial noise control is required
Control rooms & acoustic enclosures: Reduces industrial noise transmitted into control rooms and acoustic enclosures
Educational institutions: Schools, colleges, and universities requiring acoustic isolation
Defence & critical infrastructure: Supplied to defence and critical infrastructure facilities, including 70 doors at RAAF Base Williamtown
Customisable configurations: Available as personnel doors, double doors, or with specialised penetrations (e.g., gantry cranes)

Tested & compliant

NATA-accredited testing: Independently tested at the Applied Acoustics Laboratory, RMIT University (NATA Accreditation No. 1421)
Test standards: Tested to AS 1191-2002 and rated to AS/NZS ISO 717.1
Certified performance data: Frequency-specific results (100Hz to 5000Hz)
Test reports available: RMIT test reports from a NATA-accredited laboratory, available on request
Laboratory testing: Measured in RMIT’s reverberant sound transmission suite

Built to last

Heavy sheet metal construction: Durable materials engineered for long-term industrial use
Corrosion-resistant options: Available in galvanised steel, stainless steel, or aluminium finishes
Low-maintenance hinges: Heavy-duty ball-bearing hinges
Longevity assurance: Designed for years of reliable performance

Product	Rw (C;Ctr) rating	Key applications
Sonic Access personnel acoustic door	46 (-1;-4)dB	Personnel access points, control rooms, machine rooms, plant rooms, manufacturing facilities, educational institutions, and offices in high-noise environments
Sonic Access acoustic double door	45 (-1;-3)dB	High-noise industrial environments, pump stations, critical infrastructure, water treatment plants, acoustic enclosures, defence facilities, and applications requiring maximum noise isolation

Panel composition

Specification	Personnel door	Double door
Internal steel sheet	Heavy-duty steel	Heavy-duty steel
External steel sheet	Heavy-duty steel	Heavy-duty steel
Core material	High-density acoustic core	High-density acoustic core

Dimensions

Specification	Personnel door	Double door
Door width	Custom-made to specification	Custom-made to specification
Door height	Custom-made to specification	Custom-made to specification
Thickness	80mm	80mm
Size options	Custom sizing available	Custom sizing available
Customisation	Yes	Yes

Sealing system

Specification	Personnel door	Double door
Type	Double Runner Seals	Double Runner Seals
Perimeter sealing	Precision-sealed frame	Precision-sealed frame
Draught prevention	Yes	Yes
Vermin & dust protection	Yes	Yes

Surface treatment

Specification	Personnel door	Double door
Anti-corrosive treatment	Epoxy primer & paint	Epoxy primer & paint
Standard finish	Powder-coated/factory-painted	Powder-coated/factory-painted
Optional finishes	Galvanised steel, stainless steel, aluminium	Galvanised steel, stainless steel, aluminium
Colour options	Wide colour range available	Wide colour range available

Structural properties

Specification	Personnel door	Double door
Design type	Self-supporting rigid frame	Self-supporting rigid frame
Frame construction	Reinforced steel sectional frame	Reinforced steel sectional frame
Hinges	Heavy-duty ball-bearing welded hinges	Heavy-duty ball-bearing welded hinges
Installation type	SonicFix ready-to-fit (pre-hung in portal frame)	SonicFix ready-to-fit (pre-hung in portal frame)

1. Sound insulation testing

Tested to AS 1191-2002, with Rw determined to AS/NZS ISO 717.1
Testing conducted at the Applied Acoustics Laboratory, RMIT University (NATA-accredited facility)
Personnel door: Achieves Rw 46dB
Double Door: Achieves Rw 45dB
Laboratory-verified attenuation results available from 100Hz to 5000Hz

2. Acoustic performance data

Comprehensive frequency-specific Sound Transmission Loss (R dB) measured across all 1/3 octave bands (100Hz to 5000Hz)
Personnel door performance: 28.8dB @ 100Hz to 51.6dB @ 5000Hz
Double door performance: 26.6dB @ 100Hz to 49.3dB @ 5000Hz
Confidence levels documented for all frequency measurements

3. Available test documentation

Full RMIT test reports
Sound Transmission Loss (R dB) frequency tables
Applied Acoustics Laboratory, RMIT University test reports
Detailed acoustic performance specifications

Specification requirement	Details
Door type	Sonic Access acoustic door, type: [DOOR TYPE]
Acoustic performance	Door assembly to achieve: [REQUIRED ACOUSTIC RATING]
Fabrication	Door assembly is to be fabricated in accordance with Flexshield manufacturer specifications.
Installation	Door assembly is to be installed in accordance with Flexshield manufacturer specifications to achieve the specified acoustic performance.
Door size	As nominated in the project door schedule.
Handles and hardware	As nominated in the project door schedule and compatible with the specified acoustic performance of the door assembly.
Colour and finish	As nominated in the project door schedule.
Manufacturer	Flexshield
Technical enquiries	Phone 1300 799 969 or email enquiry@flexshield.com.au

Sonic Access acoustic doors – Sound transmission loss comparison

1/3 Octave Frequency (Hz)	Personnel door: R (dB)	Personnel door: 95% confidence (dB)	Double door: R (dB)	Double door: 95% confidence (dB)
100	28.8	2.8	26.6	2.8
125	30.7	2.1	35.2	2.4
160	36.7	1.5	37.8	1.8
200	38.9	1.2	38.4	1.7
250	41.2	1.0	40.9	0.9
315	42.3	0.9	43.5	0.7
400	42.0	0.8	43.4	0.7
500	42.2	0.5	42.1	0.7
630	40.9	0.6	42.2	0.6
800	44.5	0.5	44.5	0.5
1000	47.4	0.5	45.2	0.4
1250	47.9	0.3	45.8	0.4
1600	47.5	0.4	44.8	0.5
2000	46.9	0.4	45.9	0.6
2500	46.6	0.6	46.7	0.6
3150	48.1	0.5	49.3	0.6
4000	49.4	0.5	48.9	0.5
5000	51.6	0.6	49.3	0.5

Weighted sound reduction index:

Personnel door: Rw (C;Ctr) = 46 (-1;-4)dB
Double door: Rw (C;Ctr) = 45 (-1;-3)dB

Test method and rating: AS 1191-2002 | AS/NZS ISO 717.1

Project Gallery

"Flexshield were very quick and easy to work with. They were organised with shop drawings and keeping up to date with the project. Flexshields installation process was quick and seamless without creating any hassle. We look forward to working with Flexshield again."

Zac Borzillo | Moretto Building Pty Ltd

We are proud to work with some of Australia’s greatest brands

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Client: Manildra Group

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Client: Sydney Water

Flexshield Supplies RAAF Williamtown with 70 Acoustic Doors

Project: Acoustic Doors for RAAF Base Williamtown

Industry: Defence

Location: Williamtown NSW

Client: Australian Defence Force

Questions people ask about Sonic Access acoustic soundproof doors

What acoustic ratings are available for Sonic Access acoustic doors?

The tested Personnel Door achieved Rw 46 and the tested Double Door achieved Rw 45. The results were measured to AS 1191-2002, with Rw determined to AS/NZS ISO 717.1.

Where were Sonic Access acoustic doors tested?

The Personnel Door and Double Door configurations were tested at the Applied Acoustics Laboratory at RMIT University, a NATA-accredited laboratory. The relevant RMIT test reports are 121I/11-040/PD for the Personnel Door and 121I/11-041/PD for the Double Door.

What frequency range is covered by the acoustic test data?

The RMIT test reports give transmission loss results in 1/3 octave bands from 100Hz to 5000Hz. The results for both tested doors are in the Test Results table on this page.

Can Sonic Access acoustic doors be made to suit different door openings?

Yes. Sonic Access acoustic doors are custom-made to project requirements, with door width and height specified for the application. Personnel and double-door configurations are available.

What information is needed when specifying a Sonic Access acoustic door?

Provide the required door configuration, acoustic requirements, door size, handles and colour shown on the door schedule. Flexshield can also reference the relevant RMIT test report from a NATA-accredited laboratory for the specified tested configuration.

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