JCW supplies soundproofing and sound absorption products for domestic, commercial and construction projects throughout the UK.
The range includes products for walls, floors, ceilings, doors, outdoor areas and internal reverberation control. Each product performs a particular role, so the correct choice depends on the noise source, the building construction and the route through which the sound travels.
Soundproofing can provide a useful reduction in unwanted noise, but no individual board, mat or panel can guarantee complete silence. Effective results normally come from combining compatible components into a system suited to the property.
Before selecting soundproofing products, it is important to establish what type of noise is involved.
Airborne noise initially travels through the air before reaching a wall, floor, ceiling, door or window.
Common examples include:
Reducing airborne noise normally requires suitable mass, improved airtightness and separation between layers of the building construction.
Impact noise is produced by direct contact with a building surface. Footsteps, furniture movement, dropped objects and exercise equipment can transfer vibration through floors, joists, walls and ceilings.
This type of sound is generally best treated close to its source using resilient floor products or a floating floor system.
Speakers, washing machines, pumps, mechanical equipment and machinery can transfer vibration directly into the structure.
These sources may require isolation pads, resilient mounts or changes to the way equipment is supported. Adding acoustic boards to an unrelated wall will not necessarily correct vibration entering through the floor.
Wall soundproofing may help reduce conversations, televisions, music and other airborne noise passing through party walls or internal partitions.
A suitable system may combine:
The correct arrangement depends on whether the existing wall is masonry, blockwork, timber stud, metal stud or another construction.
JCW Silent Board Plus may be used as part of suitable wall or ceiling systems. Its performance will depend on the surrounding construction, cavity treatment, supporting framework, fixings and perimeter details.
One board should not be treated as a universal solution for every wall-noise problem.
Noise does not always travel directly through the wall where it is heard.
It may bypass the main separating surface through:
This is known as flanking transmission.
A substantial wall lining may provide a smaller improvement than expected if sound can continue through an untreated floor cavity or connected ceiling structure. The surrounding room should therefore be assessed before the wall system is selected.
Floor soundproofing may be used to reduce airborne noise, impact noise or a combination of both.
Depending on the existing construction, a floor system may include:
Timber and concrete floors behave differently and should not automatically receive the same treatment.
The intended floor finish must also be considered. A product suitable beneath carpet may not be appropriate beneath tiles, timber, laminate or luxury vinyl flooring.
Floor treatments can increase the finished level and affect doors, thresholds, skirting boards, stairs and fitted furniture. These practical changes should be included in the project plan.
A floating floor relies on resilient separation from the surrounding structure.
If the new floor makes rigid contact with adjoining walls, columns or pipework, vibration may bypass the resilient layer through these connections.
Perimeter isolation strips and careful installation details help reduce these acoustic bridges.
The floor should be installed according to the relevant system guidance rather than allowing boards, screeds or finishes to make unintended contact with surrounding surfaces.
Where access to the floor above is not possible, ceiling soundproofing may help reduce voices, television noise and some impact sound.
Possible systems include:
An independent ceiling can provide greater separation from the floor above, although it reduces the available room height.
Lighting, smoke alarms, ventilation grilles and cable routes must be incorporated carefully. Openings through the finished ceiling can weaken acoustic performance and may also require suitable fire-rated treatment.
A ceiling system may reduce the direct sound path while some impact vibration continues through adjoining walls and structural connections.
Doors can be significant weak points because a lightweight door leaf and gaps around its edges may provide less resistance to sound than the surrounding wall.
A soundproof door may be suitable for:
The performance of the complete doorset depends on the door leaf, frame, perimeter seals, threshold, ironmongery and quality of installation.
Replacing the door will offer limited value if most of the sound is travelling through the surrounding wall, ceiling void, raised floor or ventilation system.
Alterations to entrance doors in flats and shared buildings must also preserve any required fire and escape performance.
Acoustic fencing and barriers may help reduce certain outdoor noise sources by interrupting the direct path between the source and the receiving area.
Potential applications include:
The effectiveness of a barrier depends on:
A barrier may provide a useful reduction for a ground-floor garden while offering less benefit to an upper-floor bedroom. Aircraft and elevated noise sources are particularly difficult to control using fencing alone.
JCW supplies products for both soundproofing and sound absorption, but the two treatments solve different problems.
Soundproofing helps reduce sound passing between separate rooms, properties or areas. It may involve mass, structural separation, resilient components and careful sealing.
Sound absorption controls echo and reverberation within the same room. Acoustic wall panels, ceiling absorbers and other treatments can improve speech clarity and make a space less reflective.
Absorption products can be useful in:
Acoustic foam or fabric panels should not be relied upon to block conversations, footsteps, traffic or music passing through walls, floors or ceilings.
Office soundproofing may be required where conversations pass between meeting rooms, private offices or adjoining businesses.
Potential transmission paths include walls, doors, ceiling voids, raised floors, ventilation systems and service penetrations.
Where the problem is excessive echo rather than transmission between rooms, absorption panels or ceiling treatments may be more appropriate.
Many workplaces require both privacy between rooms and improved acoustic conditions within open spaces. These should be treated as related but separate objectives.
Recording studio soundproofing can be particularly demanding because music and amplified sound may contain substantial low-frequency energy.
A studio project may require coordinated treatment to:
The internal acoustic treatment of a studio does not automatically prevent sound escaping from it. Absorption and soundproofing should be designed for their separate functions.
The same principle applies to cinemas, theatres, rehearsal rooms and other leisure and entertainment spaces.
Small gaps can reduce the performance of an otherwise substantial acoustic construction.
Common weak points include:
A flexible acoustic sealant may help close suitable joints as part of a complete system.
Sealant alone will not soundproof a weak wall, floor or ceiling. Service penetrations may also require tested fire-stopping products rather than a general acoustic sealant.
Suitable products can underperform when installed incorrectly.
Common installation problems include:
Some straightforward products may be suitable for an experienced DIY installer. Independent walls, floating floors, suspended ceilings, acoustic doors and alterations affecting ventilation or fire compartmentation may require a competent tradesperson.
The most suitable JCW products will depend on:
Soundproofing can provide a useful and noticeable reduction, but it cannot guarantee complete silence. Low-frequency bass, heavy impact sound and structural vibration can be particularly difficult to control.
A targeted system designed around the actual noise problem will generally provide more value than selecting products solely according to thickness, appearance or an individual test figure.
Call Acoustic Supplies on 01204 548400 or contact the team online to discuss the most suitable JCW soundproofing products for your project.