New Fit-Out Too Echoey? What Actually Helps

The fit-out is finished. The concrete looks great, the glazing keeps everything open, the timber detailing is exactly what was specified, and the exposed ceiling gives the space the contemporary look everyone wanted.

Then people move in.

Suddenly, conversations carry across the room. Meeting areas sound hollow. Chairs scraping, phones ringing and everyday activity seem more noticeable than expected.

The new fit-out looks right—but it doesn't sound right.

This is a common problem in modern commercial interiors.

Many of the materials that create today's clean architectural aesthetic are also highly reflective. Concrete, glass, plasterboard, timber, metal and hard flooring provide very little sound absorption on their own.

When enough of these surfaces are combined, sound reflects repeatedly around the space and reverberation increases.

The solution usually isn't to abandon the design.

It is to reintroduce the absorption that the room is missing.

Acoustic wall panels, ceiling panels and suspended treatments can reduce reflected sound while becoming part of the architectural language of the fit-out.

Modern commercial interiors often favour materials selected for appearance, durability, daylight and openness.

Typical examples include:

Individually, none of these materials necessarily creates an acoustic problem.

The issue occurs when most of the room is reflective.

When someone speaks, sound travels directly towards other people but also spreads throughout the space.

It reaches the ceiling, walls, glazing, floor and furniture.

Hard surfaces reflect much of that sound back into the room.

Those reflections then reach other hard surfaces and continue travelling.

The result is reverberation—the persistence of sound after the original sound has been produced.

When there isn't enough absorption to control those reflections, the room begins to feel echoey.

Acoustic problems are sometimes particularly noticeable just before handover.

An empty room has fewer objects to interrupt or absorb sound.

Once furniture, people and soft finishes are introduced, conditions may improve slightly.

However, relying on furniture alone isn't a reliable acoustic strategy.

A workplace filled with desks and chairs can still be highly reverberant if the dominant architectural surfaces remain reflective.

Likewise, adding rugs, plants or upholstered furniture may provide some additional absorption, but these elements shouldn't automatically be expected to solve a significant reverberation problem.

If the room lacks sufficient acoustic absorption, dedicated acoustic treatment is usually required.

The fundamental solution is straightforward:

Add sound absorption.

Acoustic panels are designed to absorb a portion of the sound energy that reaches them instead of reflecting most of it back into the room.

As appropriate absorption is introduced, the amount of reflected sound decreases.

That can help improve:

The important part is deciding how much absorption is needed and where it should go.

Simply installing a few decorative acoustic panels doesn't automatically mean the room's acoustic problem has been addressed.

One reason acoustic treatment is sometimes left out of a fit-out is the assumption that it will compromise the interior design.

That doesn't have to be the case.

Modern acoustic products can be incorporated into the architecture through:

Instead of trying to hide the acoustic treatment, it can become part of the visual concept.

For example, a large reflective wall could become an acoustic feature wall.

An exposed ceiling can retain its open appearance while suspended acoustic baffles introduce absorption between services.

A reception area can use a decorative acoustic system that provides texture and depth while also helping control reverberation.

The acoustic solution should support the architecture rather than fight against it.

If budget or available space limits how much acoustic treatment can be installed, start by looking at the largest reflective surfaces.

These surfaces usually offer the greatest opportunity to introduce meaningful absorption.

In a typical commercial fit-out, that may include:

Treating a substantial hard surface generally has a greater acoustic effect than distributing a handful of small panels purely for decoration.

This doesn't mean every large wall needs to disappear behind acoustic material.

It means the treatment strategy should prioritise surfaces where useful coverage can actually be achieved.

Glass is one of the most common challenges in contemporary workplace design.

It provides daylight, visibility and openness, but acoustically it is highly reflective.

You may not want—or be able—to cover the glazing.

Instead, look at the other available surfaces.

If one side of a meeting room is predominantly glass, acoustic treatment may be introduced to:

The goal is not necessarily to treat the glass itself.

It is to introduce enough absorption elsewhere to compensate for the large amount of reflection within the room.

Exposed ceilings can create excellent architectural character, but they remove one of the most common opportunities for acoustic absorption: the suspended acoustic ceiling.

Without that absorptive plane, sound can reach the structural soffit and surrounding services before reflecting back into the room.

This is where suspended acoustic baffles can be particularly useful.

Baffles can be installed below the exposed structure while retaining the open-ceiling aesthetic.

They can also work around:

Because multiple surfaces of a suspended baffle are exposed to sound, baffles can provide useful absorption without requiring the entire ceiling to be enclosed.

For large open-plan spaces, this can be an effective way to combine acoustic treatment with an exposed-services design.

Neither is automatically better.

The right solution depends on the room.

Wall panels may make sense when:

Ceiling treatment may be preferable when:

Often, the strongest solution uses both wall and ceiling absorption.

Rather than selecting a product location first, look at where the room provides the best opportunity to introduce the required amount of treatment.

There is no universal percentage of wall or ceiling coverage that works for every commercial interior.

The amount of absorption required depends on:

A small meeting room and a large open-plan workplace should not receive the same acoustic treatment simply because both contain glass and concrete.

The acoustic requirements need to be considered for each type of space.

A useful acoustic design doesn't simply aim to make every room "as dead as possible."

Different spaces require different acoustic conditions.

AS/NZS 2107 provides guidance on recommended internal acoustic conditions for different room types and uses, including reverberation considerations.

A meeting room, open-plan office, teaching space and auditorium each have different acoustic priorities.

This means the correct question isn't:

"How many acoustic panels should we add?"

It is:

"What acoustic condition are we trying to achieve in this room?"

Once that has been established, the amount and placement of treatment can be developed around the required outcome.

For more complex spaces, an acoustic consultant may be required to establish and verify the design criteria.

A commercial fit-out is rarely one acoustic environment.

An office may contain:

Each space is used differently.

A meeting room needs strong speech intelligibility.

An open-plan office needs control of reverberation while also managing distraction between work areas.

A reception area may require acoustic treatment that also acts as a strong architectural feature.

The treatment should therefore respond to the function of each space, rather than applying one panel and one coverage level everywhere.

This is an important distinction when troubleshooting a new fit-out.

Acoustic panels primarily address sound within a room.

They absorb reflections and help reduce reverberation.

If the actual complaint is that conversations can be heard clearly through a meeting room wall, the problem may instead involve sound transmission.

That can relate to:

Adding absorptive panels may improve how the room itself sounds, but it does not automatically make the room soundproof.

Before selecting a solution, identify whether the problem is reverberation, sound transmission, or both.

When acoustic panels are added to a commercial fit-out, they become part of the building's internal wall or ceiling lining system.

Fire performance therefore needs to be considered alongside acoustic performance and appearance.

The required classification depends on factors including:

Project teams should confirm the required fire classification for the specific building and installation.

They should also check the relevant fire-test documentation for the actual acoustic panel configuration being specified rather than assuming all variations of a product have identical performance.

Acoustic Panels Australia can provide relevant technical and fire-performance information to assist with specification.

Ideally, acoustics should be considered during schematic design and documentation.

But sometimes the problem only becomes obvious once the fit-out is occupied.

That doesn't necessarily mean the entire interior needs to be redesigned.

Start by identifying:

This provides a much better starting point than purchasing a few panels and hoping they solve the problem.

Existing architectural elements can often remain untouched while acoustic treatment is introduced strategically around them.

Before selecting a panel, consider the entire space.

Ask:

The strongest solution isn't necessarily the product with the highest acoustic rating or the largest number of panels.

It is the solution that matches the room, its use and the required acoustic outcome.

Acoustic Panels Australia manufactures acoustic solutions for commercial interiors across Australia.

For an existing fit-out that has turned out more reverberant than expected, our team can help look beyond simply adding panels wherever there is an empty wall.

We can assist architects, designers, builders and project teams with:

This allows acoustic treatment to be integrated into the existing design while addressing the actual acoustic problem.

You don't necessarily need to compromise the concrete, glass, timber or exposed-ceiling aesthetic that made the fit-out work visually.

You may simply need to restore the sound absorption that those hard surfaces removed.

Start with the largest reflective areas, establish the acoustic requirement for each room, and introduce appropriately selected wall, ceiling or suspended acoustic treatment where it can make a meaningful difference.

Send us your plans, room dimensions, photos or project brief, and our team can help determine an appropriate approach.

Contact Acoustic Panels Australia to specify acoustic treatment for your fit-out.