Canteens & multi-purpose halls
Large, very reverberant volumes where the ceiling is the first lever.
Public-building acoustics →Product · Ceiling & baffles
Suspended acoustic ceiling baffles.
When the ceiling is high and the volume large, suspended baffles are the most effective solution: they capture sound on both faces and treat a large absorbent surface up high, where the floor and walls are already taken. ACOUSTELIO makes them to measure in PET felt, printable in your colours and fire-certified for public buildings.
The principle
Two active faces, up high.
A baffle is suspended vertically below the ceiling, most often by cables. Because it exposes its two faces to the sound, it absorbs the waves that rise and those that come back down after striking the underside. For an equal surface of material, it therefore captures far more than a simple panel pressed against the ceiling, which works on one side only. It is this double exposure that explains its yield in large volumes.
The install is done in parallel lines, in a chequerboard or a comb, at the chosen height. We orient the baffles perpendicular to the dominant sound flow to maximise the surface offered to the waves. The light weight of PET felt allows thin cables and a minimal load on the structure, with no heavy frame to build.
It is the ideal tool for high ceilings, where the walls are glazed or inaccessible. To clearly tell this treatment apart from soundproofing, which answers a completely different need, see acoustic treatment vs soundproofing.
Why the ceiling
In a large volume, the biggest bare surface.
Look at a workshop, a lobby or a sizeable restaurant. The floor is taken up by machines, tables or furniture. The walls are often glazed, covered with shelving, punched with doors and bays. That leaves the ceiling: the biggest hard, flat and empty surface of the space. It sends back the largest share of the sound towards the ears, and it is precisely there that you can place the most absorption in a single move.
Treating the ceiling first therefore gives the best acoustic yield per euro spent. You act on the overall reverberation, that diffuse din that stagnates in the volume, before even dealing with the local reflections. In a large space, this mass of absorption up high changes how it feels for everyone, not just those placed near a treated wall.
Another decisive advantage: you don't touch the structure or the existing services. No dismantling, no false ceiling to open. Baffles hang below what is already there, which makes them easy to fit in an occupied building and entirely reversible on the day of a move.
1,00NRC
absorption possible with an air gap
30-40%
of the ceiling surface to treat
2,5-3m²
of room treated per baffle (indicative)
10-15d
DDP delivery across Europe
Performance
Up to almost all the sound absorbed.
Suspended with an air gap between the baffle and the ceiling, our baffles can reach an absorption coefficient close to NRC 1,00: almost all the incident sound energy is absorbed, and next to nothing is sent back. This figure is not a marketing promise, it is a value measured in the laboratory on this type of suspended mounting.
The role of the air gap deserves an explanation, as it is the most underrated lever. By leaving a space of several centimetres between the top of the baffle and the underside, you give the sound wave room to dissipate on both sides of the material. This space clearly improves the absorption of low and mid sounds, those that carry the voice and the din. A baffle suspended with an air gap does better, at equal thickness, than a panel bonded to the ceiling. We therefore set three parameters together: the felt thickness, the spacing between baffles and the height of this air gap, according to your volume and the target reverberation time.
PET felt with a share of recycled material, light, stable over time and fire-certified B-s1,d0. It works mainly on the human voice band, where comfort is decided. Evidence and absorption data sheet in the guarantees.
Where to fit baffles
Designed for large volumes.
Six spaces where a high ceiling makes baffles the first lever.
Workshops & industry
Metal structures, hard floors, resonating machines. The ceiling stays the only large free surface to place absorption.
Lobbies & halls
Atriums and receptions with high ceilings, often heavily glazed. Baffles treat the echo without touching the walls or the light.
Restaurants
Rooms where the din climbs fast at service. Suspended above the tables, baffles bring the level down without hampering movement.
Open-plan offices
A mass of absorption up high, where the floor is already taken by desks. The most powerful lever on a large floor plate.
Gyms & sports halls
Huge volumes, unusable walls. Suspended out of reach of the balls, baffles break an often extreme reverberation.
Canteens & refectories
The sound peak of lunch, concentrated in one hour. A ceiling treated with baffles makes meals far more bearable.
Layout & density
How many baffles, and where to place them?
The number of baffles is not a magic figure. It follows from the volume to treat, the ceiling height, the materials in place and the starting reverberation time. In an open space, you generally aim for 30 to 40 % of the ceiling surface covered in absorption. In a more partitioned room, where the walls already play a part, 20 to 30 % is often enough. As a guide, one baffle treats on the order of 2,5 to 3 m² of room, but this ratio shifts with height and initial echo.
The layout is the fitting plan: how many lines, what spacing, what orientation. The spacing counts as much as the number. Too tight, and the baffles cast acoustic shadow on each other and the yield plateaus. Too far apart, and zones of the volume stay reverberant. We therefore look for a regular distribution that exposes a maximum of faces to the sound, taking into account the lighting, the sprinklers, the ventilation and the beams to work around.
Rather than applying a catalogue recipe, we start from your plan with surface, height and materials, we estimate the useful absorbent surface to reach the target reverberation time, then we draw the layout. You know exactly how many baffles you are buying and the expected effect, without the oversizing that inflates the bill without improving anything.
Baffles or a suspended ceiling?
Two ways to treat a ceiling.
On a large volume you want to keep open, suspended baffles almost always win.
Suspended baffles (us)
Suspended acoustic ceiling
Two active faces
No full frame
Keeps the volume & the light
Reversible & movable
Fully hides the structure
Cost per m²
Controlled
High
Lead time
10 to 15 days
Several weeks
Where to fit them
A few examples of treated volumes.
Where the ceiling is high and the surface large.
Lobbies & halls
Atriums and reception halls with high ceilings, treated without touching the ceiling.
Hotel acoustics →
Open-plan offices & restaurants
A mass of absorption up high, where the floor is already taken.
Office acoustics →The install
Cable suspension, no major building work.
Baffles hang by cables and fixings to the ceiling or the roof structure, at the chosen height. The light weight of PET felt is a real asset here: thin cables are enough, the load on the structure stays minimal, and you avoid the rails and heavy frames of a false ceiling. We adapt the fixing system to the support, whether it is concrete, steel decking, metal beams or a timber structure.
The install is done at height, with a lift or a rolling scaffold, often in a space that stays in use. You can align the baffles, cross them in a chequerboard or vary the heights for a graphic look. The layout plan supplied with the order specifies the fixing points, the cable lengths and the mounting order, so the installer moves ahead without improvising.
Many technical teams fit them themselves from this plan. For a more complex job, a very high ceiling or coordination with other trades, we schedule the deliveries around your timeline. DDP delivery across Europe, duties and taxes included, with no surprise on arrival.
Public-building compliance: checked before manufacturing.
Canteens, lobbies, restaurants, gyms and multi-purpose halls receive the public: they require a suitable fire classification. Our baffles are classified EN 13501-1 B-s1,d0, the level expected in public-access buildings, and the classification report comes with every order, ready for the safety file or the inspection body. We check this point from the quote stage, along with the suspension and the clearances, to avoid the solution fitted then rejected by the commission.
The ACOUSTELIO difference
Performance, and a graphic effect.
Baffles are not just a technical device: aligned or in a chequerboard, printed in your colours, they draw the ceiling and structure the space. You get maximum absorption and a visual signature, layout plan to back it up, approved on a proof before production. A logo, a gradient, a mood pattern: the felt takes high-definition printing without losing any of its absorbing power.
To combine with wall panels for the lateral reflections.
Maintenance
Fitted up high, forgotten day to day.
A ceiling treatment has to last for years without tying up your teams. PET felt answers this requirement well. It does not deform, does not crumble and does not release fibres the way bare mineral wool would: nothing falls onto the tables, desks or machines below. The material withstands the normal humidity of a heated space and keeps its shade over time.
On maintenance, an occasional dusting with a soft-brush vacuum is enough, once or twice a year depending on the setting. Suspended up high, baffles escape the knocks and everyday dirt, unlike a shoulder-height wall panel. In case of a local stain, a targeted dry clean solves the point without taking down the whole line.
How it works
From the volume to the treated ceiling, in 4 steps.
01
Volume study
Surface, height, materials, starting reverberation.
02
Layout & proof
Fitting plan, approved visual, quote within 48 h.
03
Manufacturing
Made-to-measure baffles, fire- and absorption-certified.
04
Delivery & install
Delivered DDP with a fixing plan, within 10 to 15 days.
A large volume treated by the ceiling.
Send the plan of your space, layout plan and quote within 48 h.
Request my free quoteFrequently asked questions
Baffles & ceiling: your questions.
What is an acoustic baffle?
A baffle is an absorbent panel suspended vertically below the ceiling, usually by cables. Unlike a panel bonded to the ceiling, the baffle exposes both faces to the sound: it captures the waves that rise and those that come back down, which makes it very effective in large volumes. You install them in lines or in a chequerboard, at the chosen height. It is the go-to solution for high ceilings where you cannot, or do not want to, treat the underside directly. Its light weight simplifies the install and limits the load on the structure.
Why treat the ceiling first?
Because in a large volume, the ceiling is often the biggest hard, bare surface: it sends the most sound back towards the ears. Treating it therefore offers the best absorbent-surface-to-result ratio. When the walls are glazed, taken up by furniture or hard to reach, the ceiling stays available. Baffles place a lot of absorption there without touching the existing structure, which makes it the first lever in a workshop, a lobby, a restaurant or an open-plan office. You almost always start there before adding wall panels.
What absorption performance do you get?
Baffles are among the highest-performing solutions. Suspended with an air gap between the baffle and the ceiling, they can reach an absorption coefficient close to NRC 1,00, that is, almost all the sound energy absorbed. Performance depends on the felt thickness, the spacing between baffles and the air gap left above. We size these three parameters to your volume to target the reverberation time you are after, and we document it all in the technical data sheet supplied with the order.
How many baffles do you need and how much surface to treat?
You generally aim for 30 to 40 % of the ceiling surface in an open space, 20 to 30 % in a partitioned room. As a guide, one baffle treats roughly 2,5 to 3 m² of room, but this varies with ceiling height and starting reverberation. A bare, very reverberant volume needs more. Rather than applying a recipe, we start from your plan (surface, height, materials) to calculate the useful quantity and propose a costed layout, avoiding the oversizing that costs without any gain.
How are baffles suspended?
By cables and fixings to the ceiling or the roof structure, at the chosen height. PET felt is light, which simplifies the fixing and limits the load on the support. You can align them, cross them in a chequerboard or vary the heights for a graphic effect. The install needs no major building work and is often done at height with a lift or a rolling scaffold. We supply the layout plan and the fixing recommendations suited to your ceiling type, concrete, steel decking or timber structure.
Baffles or wall panels: which to choose?
It all depends on the volume. In a standard-height room, wall panels are often enough. As soon as the ceiling is high or the floor area large (workshop, lobby, sizeable restaurant, open-plan office), baffles become the most effective lever, because they treat a large surface up high with their two active faces. The two combine very well: baffles on the ceiling for the mass of absorption, wall panels for the lateral reflections at the bounce points. We advise you according to your space and your budget.
Suspended baffles or a suspended acoustic ceiling: what is the difference?
A suspended acoustic ceiling covers the whole underside with tiles and hides the height: it drops the perceived volume and conceals the structure, but requires a full frame and costs a lot per square metre. Baffles, by contrast, fit by cables with no frame, keep the volume and the light visible, and often treat as much sound with less material thanks to their two active faces. On steel decking or a structure you want to keep visible, or when the budget is set, baffles almost always win. They also stay entirely reversible.
Do baffles need maintenance?
Very little. PET felt does not deform, does not crumble and does not release fibres the way bare mineral wool would. An occasional dusting with a soft-brush vacuum is enough, once or twice a year depending on the setting. Suspended up high, baffles are little exposed to knocks and everyday dirt. The material withstands the normal humidity of a heated space. In case of a local stain, a targeted dry clean solves the problem without taking down the whole line.
Are baffles compliant for public buildings?
Yes. Our baffles are fire-classified EN 13501-1, level B-s1,d0, the one expected in public-access buildings: canteens, lobbies, restaurants, gyms, multi-purpose halls. The classification report comes with the order, ready for a safety file or an inspection body. We check this point before starting manufacturing, to avoid the solution fitted then rejected by the commission. Compliance is part of the quote from the start, it is not an option added at the end of the process. Cable suspension also respects clearance rules.
In a large volume, sound is settled from above. The ceiling is the biggest bare surface, and a baffle works there on both its faces, where a bonded panel offers only one.
The principle we apply to every volume, from the workshop to the reception hall.
A large volume, finally calm.
Send us the plan of your space, and we come back with a layout plan and a quote within 48 h.
Request my free quote