Silence Your Noisy Neighbours With Acoustic Supplies

How to Reduce Noise from Neighbouring Properties

Noise from an adjoining home can include conversations, televisions, music, footsteps, doors closing and household equipment. In flats and converted properties, sound may also travel from homes above or below.

Home soundproofing can help reduce neighbour noise, but it cannot silence another property or guarantee that every sound will become inaudible.

The correct treatment depends on the type of noise, the construction of the building and the route through which sound is travelling. Before selecting products, it is important to distinguish between airborne noise, impact noise and structure-borne vibration.

Identify the Type of Neighbour Noise

Airborne noise

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

• Conversations and raised voices
• Televisions and gaming systems
• Music and speakers
• Dogs barking
• Washing machines and household appliances

Reducing airborne noise normally involves adding suitable mass, improving airtightness and creating separation between layers of the building construction.

Impact noise

Impact noise is created through direct contact with the building. Footsteps, furniture movement, dropped objects and doors closing can send vibration through floors, joists, walls and ceilings.

This type of noise is generally best treated close to its source. A resilient floor system in the property above may therefore be more effective than relying only on a ceiling treatment below.

Structure-borne vibration

Speakers, washing machines, pumps and other equipment can transfer vibration directly into the structure.

Source isolation, anti-vibration mounts or changes to the way equipment is supported may be required alongside conventional soundproofing.

Find the Main Transmission Path

The surface where noise sounds loudest is not necessarily the route through which it first entered your room.

Neighbour noise may travel through:

• Party walls and lightweight partitions
• Floors and ceilings
• Timber joists and concrete slabs
• Chimney breasts and fireplaces
• Doors and communal hallways
• Suspended ceiling and raised-floor voids
• Pipework, sockets and cable openings
• Loft spaces and connected roof structures

Sound that bypasses the main separating surface through connected parts of the building is known as flanking transmission.

For example, a party wall may be upgraded while voices continue to travel through the floor cavity or adjoining ceiling. Treating only the visible wall may therefore produce a smaller improvement than expected.

Reducing Noise Through a Party Wall

Where voices, television or music can be heard from an adjoining property, a suitable wall soundproofing system may help.

Depending on the existing construction, a system may include:

• Acoustic insulation within a cavity
• Resilient bars or isolation clips
• An independent wall lining
• Dense acoustic boards
• Flexible sealing around perimeter joints

The correct arrangement will depend on whether the original wall is masonry, blockwork, timber stud or another form of construction.

Creating separation between the original wall and the new lining can help reduce vibration transfer. Rigid fixings, unsealed edges and direct contact with surrounding surfaces can weaken the result.

JCW Silent Board Plus may form part of certain wall or ceiling systems, but one board should not be treated as a complete solution for every neighbour-noise problem.

Noise from Neighbours Above

Noise from an upper property often combines airborne sound and impact vibration. Conversations and televisions may pass through the floor construction, while footsteps and furniture movement create direct structural vibration.

Where access to the upper property is possible, a suitable floor soundproofing system may use an acoustic underlay, resilient floor deck or floating floor construction.

Where the floor above cannot be accessed, ceiling soundproofing may help reduce the direct sound path.

Possible treatments include:

• Acoustic insulation between joists
• Resiliently mounted ceiling boards
• Isolation clips and channels
• An independent ceiling

An independent ceiling can provide greater separation but will reduce the available room height. Lighting, alarms, cables and ventilation grilles must also be incorporated carefully.

Impact vibration may continue through surrounding walls and connected structural elements, even after the ceiling has been treated.

Noise from a Property Below

Voices, music and television noise may also travel upwards through an uninsulated floor cavity, gaps between floorboards and openings around pipes.

Depending on the construction, a floor treatment may combine acoustic insulation, additional mass and a resilient surface layer.

Floor systems can increase the finished level and affect doors, thresholds, skirting boards, heating pipes and fitted furniture. These practical details should be considered before installation begins.

Doors and Communal Areas

In flats and shared buildings, noise may enter through a lightweight entrance door or travel along a communal hallway.

A soundproof door may be appropriate where the doorway has been identified as a significant weakness.

The performance of the complete doorset depends on:

• The mass and construction of the door leaf
• The frame
• Perimeter seals
• The threshold or drop seal
• Accurate alignment
• The quality of installation

A specialist door will offer limited improvement if most of the noise is travelling through a wall, floor, ceiling or ventilation route.

Any changes to flat entrance doors must also preserve required fire and escape performance.

Check Gaps and Service Penetrations

Small openings can reduce the performance of an otherwise substantial separating structure.

Common weak points include:

• Pipe and cable openings
• Electrical sockets
• Board edges and perimeter joints
• Gaps beneath skirting boards
• Openings into floor and ceiling cavities
• Ventilation grilles and ducts

A flexible acoustic sealant can help close suitable perimeter gaps as part of a complete system.

Sealant alone will not soundproof a weak wall, floor or ceiling. Its purpose is to close air paths that could otherwise reduce the performance of the wider construction.

Service penetrations may also require tested fire-stopping products. Acoustic improvements must not compromise fire compartmentation.

Ventilation Routes Must Remain Functional

Sound can travel through ducts, extract grilles and other openings that allow air to pass.

These openings should not simply be blocked. Homes require suitable ventilation for indoor air quality, moisture control and the safe operation of some appliances.

Acoustic vents, attenuators or redesigned duct routes may be needed where ventilation is a significant transmission path.

Neighbour Noise in Flats and Converted Buildings

Noise transmission can be particularly complicated in flats, apartments and converted properties because several homes may share floors, walls, beams, roof spaces and service routes.

A sound that appears to pass directly through one wall may actually have travelled through a floor slab, ceiling cavity or structural frame.

Our guidance on flat and HMO soundproofing explains some of the additional considerations affecting multi-occupancy properties.

Lease conditions, landlord permission, fire compartmentation and building requirements may also need to be considered before alterations are made.

Soundproofing and Sound Absorption Are Different

Soundproofing helps reduce sound passing from one property or room to another. Sound absorption controls echo and reverberation within the same room.

Acoustic foam, wall panels and ceiling rafts may make an internal space sound less reflective, but they should not be relied upon to block neighbour noise through walls, floors or ceilings.

Some rooms may benefit from both treatments, but each serves a different purpose.

Consider Simple Measures at the Source

Where it is appropriate and safe, a calm conversation with a neighbour may help. People are not always aware of how clearly their television, speakers, footsteps or appliances can be heard elsewhere.

Possible changes at the source may include:

• Moving speakers away from shared walls
• Using isolation pads beneath equipment
• Reducing bass settings
• Using suitable floor coverings or underlays
• Avoiding noisy appliances during quieter hours

These measures do not replace soundproofing where the building provides poor separation, but they can reduce the amount of energy entering the structure.

Installation Quality Matters

Even suitable materials can underperform if they are installed incorrectly.

Common installation problems include:

• Rigid fixings bridging resilient components
• Unsealed board edges
• Compressed acoustic insulation
• Floating floors touching surrounding walls
• Untreated sockets and service openings
• Poorly fitted door seals

Some straightforward work may be suitable for an experienced DIY installer. Independent walls, floating floors, suspended ceilings and work affecting fire compartmentation may require a competent tradesperson familiar with acoustic construction.

Set Realistic Expectations

Soundproofing can reduce neighbour noise, but it cannot guarantee silence, prevent every complaint or make all activity in an adjoining property inaudible.

The result will depend on:

• The source, level and frequency of the noise
• Whether it is airborne, impact-based or structure-borne
• The existing building construction
• The number and severity of weak points
• Flanking transmission
• The system and products selected
• The quality of installation

Low-frequency bass, heavy impact sound and structural vibration can be particularly difficult to control. The practical aim is normally to achieve a meaningful reduction rather than complete elimination.

Choose a Targeted Neighbour-Noise Solution

Before ordering soundproofing products, identify whether the main problem is voices, music, footsteps, vibration or sound passing through a communal area.

A targeted system addressing the most important wall, floor, ceiling, door or service route is generally more effective than applying acoustic materials throughout the room without a clear plan.

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