Avoid A Possible Conviction When You Soundproof At Home

How to Reduce Noise Travelling from Your Home

Music, television, conversations, footsteps and household equipment can sometimes be heard more clearly in neighbouring properties than expected.

This does not always mean that someone is behaving unreasonably. Lightweight partitions, shared floors, ceiling voids, poorly sealed doors and connected structural elements can allow normal household sounds to travel between homes.

Considerate behaviour should always be part of the solution. Reducing volume, repositioning equipment and avoiding particularly noisy activities during quieter hours can all help. Where sound still passes too easily because of the building construction, home soundproofing may provide a further reduction.

The correct treatment depends on the type of noise, the way it travels and the construction of the property. It is therefore important to investigate the problem before buying products or beginning work.

Start with Simple Changes at the Source

Reducing noise before it enters the building structure can sometimes make a useful difference.

Practical measures may include:

• Moving televisions and speakers away from shared walls
• Keeping subwoofers away from corners
• Using suitable isolation pads beneath speakers
• Placing exercise equipment on resilient mats
• Adding rugs and underlay to hard floors
• Maintaining washing machines and other vibrating appliances
• Closing doors and windows during louder activities
• Avoiding furniture movement during quieter hours

These measures will not correct a weak separating wall, floor or ceiling, but they can reduce the amount of sound energy entering it.

Soundproofing should support considerate use of the home rather than be treated as permission to create unlimited noise.

Identify the Type of Noise

Noise leaving a home will usually involve airborne noise, impact noise or structure-borne vibration.

Airborne noise

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

• Music and television sound
• Conversations and raised voices
• Gaming and home cinema systems
• Musical instruments
• Dogs barking
• Kitchen and household appliances

Reducing airborne noise generally involves adding suitable mass, improving airtightness and introducing separation between structural layers.

Impact noise

Impact noise is created when something makes direct contact with the building. Examples include:

• Footsteps on hard floors
• Furniture being moved
• Objects being dropped
• Exercise equipment
• Children running or playing
• Doors closing heavily

The impact sends vibration through floors, joists, walls and ceilings. Resilient floor layers or isolated structures are often more appropriate for this type of noise than simply adding more board to a wall.

Structure-borne vibration

Subwoofers, washing machines, pumps and other equipment can transfer vibration directly into the building.

This vibration may travel through several connected surfaces before becoming audible elsewhere. Isolating the equipment from the floor or wall can therefore be an important part of the treatment.

Find the Main Sound Path

Sound can leave a room through several routes at once. The most obvious wall is not necessarily the only surface contributing to the problem.

Possible transmission paths include:

• Party walls and internal partitions
• Floors and ceilings
• Timber joists and structural beams
• Doors and door frames
• Windows and glazing
• Ventilation openings
• Pipes, cables and service penetrations
• Loft spaces and ceiling voids
• Chimney breasts and fireplaces

Sound that bypasses the main separating surface is known as flanking transmission. For example, music may travel around an upgraded party wall through the adjoining floor, ceiling or side wall.

This is why treating one surface without considering the surrounding structure can lead to disappointing results.

Reducing Noise Through Shared Walls

Music, conversations and television sound commonly pass through party walls.

A suitable wall soundproofing system may combine additional mass, acoustic insulation and resilient separation.

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

Possible components include:

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

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

The supporting structure, cavity treatment, fixing method and surrounding junctions must all work together.

Reducing Noise Through Floors

Footsteps, furniture movement and exercise equipment can create impact noise that travels into the property below.

A suitable floor soundproofing system may use an acoustic underlay, resilient deck or floating floor construction.

For impact noise, treating the floor close to the source is generally preferable. Reducing the vibration before it enters the structure is usually more effective than relying entirely on work to the ceiling below.

Airborne noise can also travel through gaps between floorboards or through an uninsulated cavity. In these situations, the treatment may need to combine cavity insulation, added mass and a resilient floor layer.

Floor systems can affect thresholds, door clearances, skirting boards and fitted furniture. More substantial installations may require an experienced tradesperson.

Ceilings and Noise Travelling Upwards

Music, conversations and television sound can also travel upwards into a room or flat above.

A ceiling soundproofing system may include acoustic insulation between joists, resiliently mounted boards or an independent ceiling.

An independent ceiling can provide greater separation from the structure above, but it will reduce the available room height.

Lighting, detectors, ventilation grilles and service openings must also be detailed carefully. Each penetration can weaken the completed system.

Ceiling treatment alone may not control vibration travelling through surrounding walls or connected structural elements, so flanking routes should be considered before work begins.

Check Doors and Doorways

A lightweight or poorly sealed door can allow noise to escape into a hallway and then travel into adjoining rooms or neighbouring properties.

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

The performance of the complete doorset depends on:

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

Replacing a door is unlikely to provide a substantial improvement if most of the noise is travelling through a wall, floor, ceiling or ventilation route.

Windows and Ventilation Routes

Noise may escape through windows, particularly where glazing is lightweight, opening sections fit poorly or seals have deteriorated.

The acoustic performance of a window depends on the glass specification, spacing between panes, frame construction and condition of the seals.

Ventilation openings can also provide a direct route for airborne noise. However, air bricks, trickle vents and mechanical ventilation systems should not simply be blocked.

Homes require suitable ventilation for air quality and moisture control. Acoustic vents, attenuators or redesigned ventilation arrangements may be needed where airflow routes form an important sound path.

Seal Gaps and Service Penetrations

Small openings can weaken the acoustic performance of a wall, floor or ceiling.

Areas worth checking include:

• Pipe and cable openings
• Board edges
• Gaps beneath skirting boards
• Electrical sockets
• Junctions between walls and ceilings
• Openings into floor or loft voids

A flexible acoustic sealant can help close appropriate perimeter joints within a complete soundproofing system.

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

Service penetrations may also require tested fire-stopping products. Acoustic work must not compromise the fire resistance of a separating structure.

Noise in Flats, Apartments and HMOs

Noise transmission can be especially complicated in flats and converted properties because several homes may share walls, floors, ceiling voids, beams and service routes.

A noise problem that appears to involve one wall may actually be travelling through a connected floor, ceiling or structural frame.

Our guidance on flat and HMO soundproofing explains some of the common issues found in multi-occupancy buildings.

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

Soundproofing Is Different from Sound Absorption

Soundproofing helps reduce noise passing from one space to another. Sound absorption helps control echo and reverberation within the same room.

Absorption panels and acoustic foam may make a music room, home cinema or gaming space sound less reflective.

They should not be relied upon to stop music, voices or bass travelling through walls, floors or ceilings.

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

Installation Quality Matters

Even suitable products can underperform if they are installed incorrectly.

Common installation problems include:

• Rigid fixings bridging resilient layers
• Unsealed board edges
• Compressed acoustic insulation
• Untreated sockets and service openings
• Incorrectly fitted floor perimeter strips
• Gaps around doors and ventilation routes

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

Set Realistic Expectations

Soundproofing can reduce noise leaving a home, but it cannot guarantee that every sound will remain within the property.

The improvement achieved 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 products and system selected
• The quality of installation
• How the room is used afterwards

Low-frequency bass and structural vibration can be particularly difficult to control. A realistic aim is usually to achieve a meaningful reduction while continuing to use the home considerately.

Choose the Correct Soundproofing System

Before ordering soundproofing products, identify the main noise source and transmission route.

A targeted system combining suitable mass, resilient separation, cavity absorption and careful sealing is generally more useful than applying unrelated products to every surface.

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