Collection: Acoustic Steel Door Systems

Steel acoustic doors are available in several configurations depending on the required sound reduction level (dB rating), and whether security, fire resistance, or thermal performance is also required.

Standard Insulated Steel Acoustic Doors

These are reinforced steel door sets fitted with insulated cores and acoustic seals to improve sound reduction.

• Typically used where moderate noise control is required
• Suitable for plant rooms, service areas, and internal partitions
• Can be supplied for internal or external applications
• Ideal where sound reduction is important but enhanced certification is not required.

PAS 24 Acoustic Steel Doors (Up to 39dB)

Security-rated acoustic doors tested to PAS 24 while also delivering acoustic performance up to 39dB.

Commonly specified for:

• Apartment block entrances
• Communal areas
• Mixed-use developments

Provides both certified security and measurable sound reduction.

Fire Rated Acoustic Steel Doors

Acoustic doors that are also fire-tested as complete door sets:

• Internal doors tested to BS EN 1634-1
• External fire doors compliant with BS EN 16034 (used with BS EN 14351-1)

Available with sound reduction typically up to 36dB, depending on specification.

Thermally Rated Acoustic Steel Doors

Designed to combine:

• Thermal insulation performance
• Acoustic sound reduction
• Weather resistance (for external doors)

Often used in exposed plant rooms or building envelopes where both noise and heat transfer must be controlled.

Thermal Fire Rated Acoustic Doors

These combine:

• Fire resistance
• Thermal insulation

Acoustic performance (up to approx. 36dB)Specified where compartmentation, energy performance, and noise control must all be achieved.

Single and Double Leaf Acoustic Doors

Available as:

• Single leaf personnel doors
• Double leaf doors for larger openings

Performance ratings depend on configuration and tested certification.

Steel acoustic doors can therefore be tailored to deliver standalone sound reduction or combined acoustic, fire, thermal, and security performance, depending on the building’s operational and regulatory requirements.

Steel acoustic doors can be configured to meet specific sound reduction targets, while also accommodating fire performance, security certification, thermal insulation, and architectural requirements.

Acoustic Performance Levels

Doors can be specified to achieve different sound reduction ratings (Rw/dB), typically up to:

• 36dB for thermal and fire rated systems
• Up to 39dB for PAS 24 security-rated acoustic doors

Performance depends on door construction, seals, and hardware configuration.

Fire Rated Configurations

Available as fire-rated acoustic doors:

• Internal doors tested to BS EN 1634-1
• External fire-rated doors compliant with BS EN 16034

Fire ratings (e.g. FD60 / FD120) must remain within tested certification.

Security Rated Options

Acoustic doors can also be specified to:

• PAS 24 enhanced security
• Additional reinforced locking systems (where certified)

Security and acoustic performance must be tested together where applicable.

Thermal Insulation Upgrades

For external applications, acoustic doors may include:

• Insulated cores
• Thermal breaks
• Weather seals

Improves both energy efficiency and sound reduction.

Door Configuration

• Single leaf doors
• Double leaf doors
• Made to measure sizes
• Side panels and overpanels (where certified)

Larger openings may require specialist acoustic detailing.

Hardware and Seals

Options may include:

• Multi-point locking systems
• High-security cylinders
• Drop-down acoustic threshold seals
• Perimeter compression seals

Panic hardware (BS EN 1125 / BS EN 179)Seal configuration is critical to achieving stated dB performance.

Glazing Options (Where Available)

Limited glazed acoustic panels may be available using specialist acoustic glass systems, provided they match tested acoustic and fire performance.

Finish and Appearance

• Polyester powder-coated finishes
• Wide RAL colour range
• Internal and external colour matching

Steel acoustic doors can be tailored to deliver the required level of sound control while integrating fire resistance, security compliance, and thermal performance — provided all customisation remains within certified test evidence.

Acoustic steel doors are specified wherever noise control is required without compromising security, fire protection, or durability. They are commonly used in both commercial and residential environments where sound transmission must be reduced between spaces.

Plant Rooms and Mechanical Areas

Installed to contain noise from:

• HVAC equipment
• Generators
• Pumps and compressors
• Electrical switchgear

Acoustic steel doors help prevent mechanical noise transferring into occupied areas.

Offices and Commercial Buildings

Used in:

• Meeting rooms
• Conference rooms
• Server rooms
• Internal partitions

Helps maintain privacy and reduce disruption in working environments.

Residential Developments

Specified for:

• Apartment entrances
• Communal corridors
• Plant enclosures within residential blocks

PAS 24 acoustic doors (up to 39dB) are often used where both security and sound reduction are required.

Schools and Educational Facilities

Installed in:

• Music rooms
• Classrooms adjacent to noisy areas
• Plant rooms

Reduces sound transfer between learning environments.

Healthcare Facilities

Used for:

• Treatment rooms
• Consulting rooms
• Plant and service areas

Helps maintain patient privacy and acoustic control.

Industrial Buildings

Installed between:

• Factory floor and office areas
• Noisy equipment zones
• Loading bays and internal corridors

Improves working conditions and regulatory noise management.

External Applications

Thermally rated and thermal fire rated acoustic doors (up to 36dB) are used for:

• External plant rooms
• Service yards
• Energy centres

Combines weather protection, thermal insulation, and sound reduction.

Acoustic steel doors are selected wherever buildings require controlled sound transmission while still meeting fire, security, or thermal performance requirements.

Steel acoustic doors are engineered to reduce airborne sound transmission while maintaining the strength, security, and fire performance of a steel door set. They provide measurable acoustic performance without compromising durability or compliance.

Measurable Sound Reduction

Available with certified acoustic ratings typically up to:

• 36dB for thermal and fire rated systems
• Up to 39dB for PAS 24 security rated acoustic doors

Benefit: Reduces noise transfer between rooms, improving privacy, comfort, and regulatory compliance in noise-sensitive environments.

Heavy-Duty Steel Construction

Manufactured from reinforced steel door leaves and frames.

Benefit: High durability, impact resistance, and suitability for demanding commercial and industrial environments.

Fire Rated Options

Available as fire tested door sets:

• Internal doors tested to BS EN 1634-1
• External fire-rated doors compliant with BS EN 16034

Benefit: Maintains compartmentation and fire protection while delivering acoustic control.

Security Rated Configurations

Can be specified to:

• PAS 24 enhanced security

Benefit: Combines certified resistance to forced entry with high acoustic performance, particularly suitable for residential and communal applications.

Thermal Insulation Performance

Thermally rated and thermal fire-rated acoustic doors provide:

• Insulated cores
• Weather seals
• Reduced heat transfer

Benefit: Improves energy efficiency while controlling sound transmission.

Advanced Seal Systems

Incorporate:

• Perimeter compression seals
• Drop-down threshold seals
• Acoustic gasket

Benefit: Minimises sound leakage through door gaps, ensuring stated dB performance.

Internal and External Use

Suitable for both internal partitions and externally exposed plant rooms.

Benefit: Flexible application across a wide range of building types.

Low Maintenance

Steel construction resists warping, splitting, and environmental degradation.Benefit: Long service life with reduced ongoing maintenance costs.

Steel acoustic doors provide a reliable solution where sound reduction, fire resistance, security performance, and structural durability must be delivered within a single certified door system.

Acoustic steel doors must comply with relevant acoustic testing standards, and where specified, may also need to meet fire, security, external product, and escape regulations. Compliance depends on how the door is being used within the building.

Acoustic Performance Standards

Sound reduction performance is typically measured in accordance with:

• BS EN ISO 10140 – Laboratory measurement of airborne sound insulation
• Classified under BS EN ISO 717-1 (Rw rating in dB)

The stated dB rating (e.g. 36dB or 39dB) applies to the complete door set, including seals and hardware.

Fire Resistance (If Fire-Rated)

Where acoustic doors are also fire-rated, they must be tested as complete assemblies to:

• BS EN 1634-1 – Internal fire doors
• BS EN 16034 – External fire-resisting doors (used with BS EN 14351-1)

Fire classification may include E (Integrity) or EI (Integrity & Insulation) ratings.

Security Certification (If Specified)

Where enhanced security is required:

• PAS 24 – Enhanced residential security

Security performance must be tested with the acoustic configuration in place.

External Door Compliance

For externally installed acoustic doors:

• Must comply with BS EN 14351-1
• CE and/or UKCA marking required
• Declaration of Performance (DoP) provided

This ensures compliance for weather resistance, wind load, and air permeability.

Emergency Escape Requirements (If Applicable)

If the acoustic door forms part of an escape route:

• Panic hardware must comply with BS EN 1125
• Emergency exit devices must comply with BS EN 179
• Internal egress must not be restricted

Acoustic seals must not interfere with safe escape.

Building Regulations

Acoustic steel doors may contribute to compliance with:

• Approved Document B (Fire Safety), where fire-rated
• Approved Document E (Resistance to the Passage of Sound), particularly in residential buildings
• Approved Document M (Accessibility), where installed on accessible routes

Installation Compliance

To maintain acoustic, fire, and security certification:

• Installation must follow manufacturer instructions
• All perimeter and threshold seals must be fitted correctly
• No unauthorised hardware modifications
• Frame must be correctly fixed and sealed

When properly specified and installed, acoustic steel doors can provide certified sound reduction while meeting applicable fire, security, escape, and building regulation requirements.

Acoustic steel doors must be installed precisely to achieve their stated sound reduction (dB) performance, and where applicable, to maintain fire and security certification. Small installation errors — particularly around seals and thresholds — can significantly reduce acoustic performance.

Installation Requirements

Structural Frame Fixing

• Frame must be securely fixed into structural substrate (masonry, concrete, structural steel)
• Frame must be square, plumb, and level
• Correct fixing centres must be used
• Gaps between frame and wall must be properly sealed

Poor alignment can affect both sound reduction and lock engagement.

Acoustic Seal Installation

Achieving the certified dB rating depends on:

• Correctly fitted perimeter compression seals
• Drop-down acoustic threshold seals (where specified)
• No gaps between leaf and frame
• Proper compression of seals when closed

Missing or poorly fitted seals will compromise performance.

Door Leaf and Hardware Alignment

• Hinges must be load-rated and correctly positioned
• Door must close fully and latch securely
• Locking systems must align correctly
• Self-closing devices (if fitted) must ensure full closure

Acoustic performance depends on consistent seal compression.

Fire Rated Installation (If Applicable)

For fire rated acoustic doors:

• Installation must comply with BS EN 1634-1 (internal) or BS EN 16034 (external)
• Intumescent seals must be correctly fitted
• Approved fire-stopping materials must be used around the frame
• No unauthorised hardware changes

Incorrect installation may invalidate fire certification.

Security Rated Installation (If Applicable)

For PAS 24 acoustic doors:

• Fixings must match tested detail
• Hardware must match certified configuration
• No alterations to acoustic or locking systems

External Installation

For external acoustic doors:

• Weather seals must be fitted correctly
• Threshold detailing must prevent water ingress
• Drainage considered
• Powder coated finish protected during installation

Supply Only Considerations

If supplied only:

• Installer assumes responsibility for maintaining acoustic, fire, or security certification
• Installation must strictly follow manufacturer drawings
• Incorrect fitting may invalidate stated dB performance

Professional installation is recommended for certified systems.

Maintenance Requirements

Regular maintenance ensures continued acoustic performance and safe operation.

Routine Inspection (Recommended Quarterly in Commercial Settings)

Check for:

• Smooth opening and closing
• Correct latch engagement
• Hinge security
• Frame stability
• Seal integrity
• Threshold seal operation

Acoustic Seal Maintenance

Inspect perimeter seals for wear or compression damage

• Ensure drop-down seals deploy fully
• Replace damaged seals promptly
• Keep threshold area clean and unobstructed

Seal condition is critical to maintaining sound reduction levels.

Hardware Maintenance

• Lubricate hinges and locks
• Adjust closers if required
• Test panic hardware (if fitted)
• Confirm locking systems function correctly

Fire Door Maintenance (If Fire-Rated)

• Inspect intumescent and smoke seals
• Confirm self-closing function
• Ensure no unauthorised alterations

External Maintenance

• Inspect weather seals
• Check for corrosion
• Maintain protective finishes
• Ensure drainage remains clear

When correctly installed and maintained, acoustic steel doors provide reliable long-term sound reduction while preserving fire resistance, security certification, and regulatory compliance.

(Indicative UK pricing – excludes VAT unless stated)

The cost of acoustic steel doors depends on the required sound reduction level (dB rating), whether fire or security certification is required, door size, and whether the door is for internal or external use.

Standard Insulated Acoustic Steel Doors (Up to ~36dB)

For plant rooms, service areas, and internal partitions.

• Supply only: From £1,100 – £1,900
• Supplied and installed: From £2,200 – £3,500

Based on a typical single leaf personnel door (approx. 900mm x 2100mm).

PAS 24 Acoustic Steel Doors (Up to 39dB)

Enhanced residential security combined with higher acoustic performance.

• Supply only: From £1,900 – £3,200
• Supplied and installed: From £3,500 – £6,000

Commonly specified for apartment blocks and communal entrances.

Fire Rated Acoustic Steel Doors (FD60 / FD120 – Up to ~36dB)

Internal doors tested to BS EN 1634-1, external doors compliant with BS EN 16034.

• Supply only: From £1,800 – £3,500+
• Supplied and installed: From £3,500 – £6,500+

Fire rating and acoustic rating combined increases cost.

Thermal & Thermal Fire-Rated Acoustic Doors

For externally exposed plant rooms or energy centres.

• Supply only: From £2,000 – £3,800+
• Supplied and installed: From £3,800 – £7,000+

Double Leaf Acoustic Steel Doors

For larger openings requiring sound control.

• Supply only: From £2,200 – £4,500+
• Supplied and installed: From £4,000 – £8,500+

Additional Cost Considerations

• Drop-down acoustic threshold seals
• Security hardware upgrades
• Access control systems
• Powder-coated colour upgrades
• Structural alterations
• Glazed acoustic panels (if available within certification)

What Affects Final Pricing

• Required dB rating (36dB vs 39dB)
• Fire rating (FD60 vs FD120)
• Security certification (PAS 24)
• Door size and configuration
• External performance requirements
• Installation access and site preparation

Getting an Accurate Quote

Because acoustic performance depends on the complete installed door set, accurate opening sizes and required dB ratings are essential. A site survey is recommended to confirm specification, ensure compliance with Approved Document E (where applicable), and provide accurate installation pricing.