Oxford Restaurant Told To Hush

Managing Noise from Restaurants, Bars and Hospitality Venues

The original version of this article focused on an Oxford restaurant that faced restrictions following complaints about amplified music. Although the individual story is now dated, it highlights a challenge that remains relevant to restaurants, bars and other hospitality venues.

Music, customer conversations, moving furniture, kitchen equipment and deliveries can all contribute to noise inside and around a restaurant. Where a venue shares walls, floors or ceilings with homes or other businesses, that sound may be noticeable beyond the premises.

Effective restaurant soundproofing is not simply a matter of adding one product to a wall or installing acoustic foam. The source of the noise, the construction of the building, the routes through which sound is travelling and the standard of installation must all be considered.

What Types of Noise Can a Restaurant Produce?

Before selecting any soundproofing system, it is important to understand the type of noise causing the problem. Restaurant noise will usually involve a combination of airborne noise, impact noise and vibration.

Airborne noise

Airborne noise travels through the air before reaching a wall, ceiling, floor, door or window. Common examples in restaurants include:

• Amplified music and live performances
• Customer conversations and raised voices
• Televisions and entertainment systems
• Kitchen equipment
• Staff activity and announcements

Lower-frequency music, particularly bass, can be difficult to control because it may travel through both the air and the structure of the building.

Impact noise and vibration

Impact noise is created when an object makes direct contact with part of the building. Examples include chairs scraping across a hard floor, footsteps, dropped items and equipment being moved.

Mechanical equipment such as refrigeration units, extract systems, speakers and kitchen appliances may also transfer vibration into walls, floors or ceilings. This structure-borne vibration can then be heard elsewhere in the building.

Identify the Main Sound Path

A useful noise-control plan begins by identifying where sound is entering or leaving the premises. The most obvious wall is not necessarily the only route.

Noise may travel through:

• Shared walls
• Floors and ceilings
• Doors and door frames
• Windows and glazing
• Ventilation openings and extract systems
• Gaps around pipes, cables and ducts
• Suspended ceilings and ceiling voids
• Connected structural elements

Sound that bypasses the main separating surface is known as flanking transmission. For example, a wall may be upgraded successfully, but noise may still travel above it through a ceiling void or around it through an adjoining floor or partition.

This is why treating a single surface without considering the surrounding construction can produce disappointing results.

Soundproofing Restaurant Walls

Shared walls are often a significant concern where a restaurant adjoins residential accommodation, offices or another commercial unit.

A suitable wall soundproofing system may use a combination of added mass, acoustic insulation, resilient layers and separation from the existing structure. The appropriate build-up will depend on the existing wall and the nature of the noise.

Lightweight partitions may require a different approach from solid masonry walls. Openings, sockets, pipework and poorly sealed junctions must also be considered because even relatively small gaps can reduce the effectiveness of an otherwise well-designed system.

Products such as JCW Silent Board Plus may form part of certain wall or ceiling systems, but product selection should be based on the complete construction rather than one board being treated as a universal solution.

Floors, Ceilings and Impact Noise

Restaurants located below flats, offices or hotel rooms may need to reduce sound travelling upwards through the ceiling. Venues above occupied spaces may also need to address noise passing down through the floor.

Floor soundproofing can help reduce impact noise caused by footsteps, chairs and other direct contact with the floor. Depending on the structure, this may involve resilient floor layers, acoustic underlays or a more substantial floating floor system.

Ceiling soundproofing may be used to reduce airborne noise or sound passing between storeys. Suspended or independent ceiling systems can provide greater separation from the structure, although they require sufficient ceiling height and careful installation.

Where possible, it is generally better to control impact noise close to its source. Suitable floor finishes, protective feet beneath furniture and considered furniture layouts can support the performance of a wider acoustic system.

Doors, Windows and Ventilation Routes

A doorway can become a major weak point when the surrounding wall provides better sound reduction than the door itself. However, replacing every door is not automatically necessary.

Soundproof doors should be considered where the doorway is confirmed as an important transmission path. Door mass, frame construction, perimeter seals, thresholds, closers and installation quality all contribute to performance.

External noise may also escape through windows, particularly where glazing is lightweight, poorly sealed or regularly left open. The glazing specification, frame condition and seals should therefore be assessed as part of the overall project.

Ventilation and extract routes can be more complicated because restaurants need adequate airflow. Simply blocking an opening is rarely appropriate. Acoustic louvres, attenuators or redesigned ventilation routes may be needed, depending on the system and the relevant building requirements.

Seal Gaps and Service Penetrations

Gaps around pipes, cables, ducts, skirting boards and board joints can allow noise to pass through a separating structure.

A suitable flexible acoustic sealant can be used as part of a correctly specified system to seal appropriate perimeter gaps and junctions. It should not be regarded as a complete soundproofing solution on its own.

Service penetrations may also require fire stopping or specialist detailing. Any treatment must preserve the required fire, ventilation and safety performance of the building.

Soundproofing Is Different from Sound Absorption

Restaurants often use soft furnishings, ceiling rafts, wall panels and other absorptive materials to improve the internal acoustic environment. These can make conversations clearer and reduce excessive echo or reverberation.

This is known as sound absorption. It helps control how sound behaves within the room.

Soundproofing has a different purpose. It is intended to reduce sound passing from one space to another.

Absorption panels and acoustic foam may improve comfort inside a busy restaurant, but they should not be presented as products that will block music or voices from travelling through walls, floors or ceilings.

Many hospitality venues benefit from both approaches: soundproofing to manage transmission and sound absorption to improve the experience within the dining area.

External Areas and Plant Noise

Outdoor seating, smoking areas, delivery points and mechanical plant can create additional noise paths that are not solved by internal wall treatments.

Where external equipment or activity is involved, its position relative to neighbouring properties should be considered. Enclosures, anti-vibration mounts, equipment maintenance and carefully selected acoustic fencing or barriers may help in suitable situations.

Barriers need sufficient height, coverage and positioning to interrupt the direct sound path. Gaps beneath or around a barrier can significantly reduce its effectiveness.

Flats, Apartments and Mixed-Use Buildings

Restaurants in mixed-use developments can present particular challenges because commercial and residential spaces often share several structural connections.

Noise may travel through columns, beams, floor slabs, ceiling voids and connected partitions rather than directly through one separating wall. A coordinated approach is therefore especially important where a hospitality venue sits beneath or beside flats.

The guidance provided for flat and HMO soundproofing can help explain some of the common transmission issues found in buildings containing several occupied spaces.

Installation Quality Matters

The performance of a soundproofing system depends heavily on how it is installed. Unsealed edges, rigid connections, compressed resilient materials and poorly treated penetrations can all create weaknesses.

Some smaller improvements may be suitable for an experienced DIY installer. More complex walls, suspended ceilings, floating floors, ventilation treatments and commercial installations may require a competent tradesperson or experienced acoustic installer.

Before ordering soundproofing products, it is important to establish how those products will work together as a complete system.

Set Realistic Expectations

Restaurant soundproofing can reduce noise transmission, but it cannot guarantee complete silence or remove the need for considerate operation.

Results will depend on:

• The source, level and frequency of the noise
• The existing building construction
• The number and severity of weak points
• Flanking transmission through adjoining structures
• The products and system selected
• The quality of installation
• How the venue is operated after the work is completed

Speaker positioning, volume management, closing doors, maintaining equipment and managing outdoor areas can all complement physical soundproofing measures. Acoustic improvements should support considerate operation rather than be treated as permission to create unlimited noise.

Discuss Your Restaurant Soundproofing Project

Every restaurant, bar and entertainment venue has a different layout, construction and pattern of use. The most effective starting point is to identify the main noise source and the routes through which it is travelling before selecting a system.

Acoustic Supplies provides products and guidance for leisure and entertainment soundproofing, including solutions for walls, floors, ceilings, doors and internal sound absorption.

Call Acoustic Supplies on 01204 548400 or contact the team online to discuss your restaurant soundproofing project.