acoustic treatments vs soundproofing: what’s the difference and what do you need?

Hide Restaurant - Project
SonaSpray fcx throughout Michellin Star HIDE Restaurant, London. Credit to Lusted Green & Andrew Meredith Photography

When it comes to issues with noise in buildings, the terms acoustic treatments and soundproofing are often used interchangeably. In reality, they solve very different problems. Choosing the wrong approach can lead to disappointing results, unnecessary costs and spaces that still sound unpleasant.

Oscar Acoustics, Britain’s leading provider and installer of seamless acoustic finishes, works with architects and designers across Britain to help them get this distinction right. Understanding the difference between acoustic treatments and soundproofing is the first step towards creating spaces that sound as great as they look.

what are acoustic treatments?

Acoustic treatments are designed to improve the quality of sound within a space. They do this by controlling how sound behaves once it is inside the room.

In hard, modern interiors, sound waves bounce repeatedly off ceilings, walls and floors. This causes reverberations, echoes and a general build-up of background noise. Acoustic treatments absorb sound energy instead of reflecting it, reducing reverberation time and making spaces calmer, clearer and more comfortable.

Acoustic treatments do not stop sound entering or leaving a room. Instead, they make speech more intelligible and create environments where people can concentrate, communicate and relax.

SonaSpray K-13 in Henrietta House. Morey Smith, CBRE Offices. ©Hufton+Crow.

Oscar Acoustics specialises in seamless acoustic treatments, including high-performance acoustic sprays and acoustic plaster systems that integrate invisibly into architectural design.

Common examples include acoustic sprays and acoustic plaster finishes.


acoustic treatments vs soundproofing: a simple comparison

A useful way to think about the difference is this:

  • acoustic treatments improve how a room sounds inside
  • soundproofing controls how sound travels between rooms

In many projects, both are required. However, if the issue is lack of clarity when talking, excessive echoes or a noisy atmosphere, acoustic treatments are usually the correct starting point.

Oscar Acoustics regularly advises clients who initially believe they need soundproofing, when in fact the real problem is untreated reverberation.

when do you need acoustic treatments?

Acoustic treatments are essential in spaces where people gather, talk, eat, work or learn. These environments often feature hard finishes such as concrete, glass and timber, which reflect sound aggressively.

Typical applications and projects include:

  • restaurants, bars and cafés
  • offices and meeting rooms
  • schools and classrooms
  • retail and public spaces
  • stadiums and auditoriums

In such places, seamless acoustic treatments allow designers to maintain clean, contemporary aesthetics while dramatically improving comfort.

acoustic sprays and plasters as modern acoustic treatments

Oscar Acoustics offers a class-leading range of acoustic sprays and acoustic plaster finishes that deliver high performance without visual compromise.

Unlike traditional panels or rafts, seamless finishes are applied directly to ceilings or walls, following the form of the architecture beneath. This makes them ideal for curved surfaces, exposed services and design-led interiors.

acoustic sprays for flexible designs

Our SonaSpray range provides a decorative, spray-applied acoustic treatment suitable for a wide variety of spaces. These systems absorb sound across a broad frequency range, significantly reducing reverberation while contributing to the visual character of a room.

All our acoustic sprays are developed for sustainable, healthy interiors. Made from fire-treated, recycled paper and rapidly renewable materials, it helps projects reduce embodied carbon while ensuring acoustic comfort.

They support major sustainability frameworks including BREEAM, WELL, SKA and the Living Building Challenge, and can contribute up to 17 points towards LEED certification. They also meet rigorous indoor air quality standards, including GREENGUARD Gold and M1 low-emitting materials certification.

This makes our acoustic sprays particularly suitable for restaurants, workplaces and public buildings where occupant wellbeing and environmental performance are priorities.

SonaSpray K-13 Special in Oscar Acoustics’ HQ offices. Tours available. ©Antonia Stuart.

acoustic plaster for seamless interiors

Acoustic plaster is an ideal solution where a completely smooth, monolithic finish is required. Once installed, it is visually indistinguishable from traditional plaster, yet it absorbs acoustics beautifully.

Oscar Acoustics’ acoustic plaster systems are widely used in:

  • high-end residential projects
  • offices and reception areas
  • heritage and contemporary architecture
  • swimming pools and public buildings

By treating large ceiling or wall areas, acoustic plaster reduces reverberation without interrupting lighting, detailing or architectural intent.

Oscar Elite acoustic plaster with Oscar Evo-Blade knife-edge trim for wafer thin elegant ceilings. ©Antonia Stuart.

soundproofing between floors

We also have our Oscar Iso-Mount range for soundproofing between floors. These acoustic hangers are straightforward to install and suitable for experienced DIYers and professional builders. Iso Mount Type 1 is height adjustable, allowing for flat ceilings across uneven joists. It is ideal for residential spaces. Meanwhile, Iso Mount Type 2 is designed for living spaces, flats, offices and classrooms.

soundproof ceilings with Iso-Mount acoustic hangers
soundproof ceilings with Oscar Iso-Mount acoustic hangers

a restaurant example: acoustic treatments in practice

Large open-plan restaurants are a common example of spaces that suffer from poor acoustics. Hard floors, exposed ceilings and busy layouts often lead to high levels of background noise, making conversation difficult.

In projects such as the HIDE restaurant in London, SonaSpray fcx acoustic spray has been used to control reverberation while preserving the visual drama of the interior. The seamless finish follows the ceiling geometry, absorbing sound energy and creating a calmer dining experience.

This type of acoustic treatment supports the overall success of the space, without the need for intrusive soundproofing measures.

choosing the right approach for your project

Deciding whether you need acoustic treatments, soundproofing or a combination of both depends on the problem you are trying to solve.

If the issue is:

  • echo
  • excessive background noise
  • poor speech clarity

then acoustic treatments such as sprays and plasters are likely the solution.

If the issue is:

  • noise travelling between spaces
  • disturbance to adjacent rooms or upstairs neighbours

then soundproofing may be required alongside acoustic treatments.

Oscar Acoustics works closely with architects, designers and contractors to assess each project and recommend the most effective approach.

For more information, simply get in touch with our team today.

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Trust the acoustic specialists at Oscar Acoustics to help you find the right solution for your next project.