For projects in France
Auditorium acoustics and soundproofing in France
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem. Churches, salles des fetes and civic auditoriums are stone and plaster volumes with very long decay.
- Reverberation time
- Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
- Early reflections
- Shaped surfaces that send energy to the rear seats rather than absorbing everything.
- Rear wall
- The single worst surface in most halls, and the first one to treat.
- Quote
- From a plan and a section, within 48 hours
01 / The material
What this is, and what it changes in a France room
A large hard volume where speech falls apart long before anyone calls the room echoey. The target is intelligibility at the back row, which is a reverberation and early reflection problem, not a loudspeaker problem.
Churches, salles des fetes and civic auditoriums are stone and plaster volumes with very long decay.
Work reaching us from France is mostly apartments, hotels, restaurants, offices, studios, schools, clinics.
- Retrofit, not new build Most rooms already exist, so the build-up has to work within the depth and the finishes you already have.
- Timber floors and divided apartments Footfall and speech move between homes through the floor. Mass plus a resilient layer beats any surface treatment underneath.
- Hospitality volume Restaurants and hotels take the acoustic complaints personally, because guests write them down. Absorption goes where it will not fight the design.
- Reverberation time Set against use. Speech and music want different numbers, and a dual use hall needs a decision.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for auditorium acoustics are on the main product page. This page covers what that means for a project in France.
02 / The build-up
The stack, in the order it is installed
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Layer 1
PET felt acoustic panels
A rigid non-woven panel pressed from 100% polyester fibre, a large part of it recycled. In France, mechanical extract ventilation is near universal, and the extract path carries sound between flats as reliably as the wall.
On a 25 to 50 mm air gap. The same panel on battens. The air gap moves absorption down in frequency at no extra material cost, and is the cheapest improvement available.
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Layer 2
Ceiling baffles and clouds
PET felt suspended from the soffit, vertically as baffles or horizontally as clouds. In France, churches, salles des fetes and civic auditoriums are stone and plaster volumes with very long decay.
Vertical baffles. Hung on edge in rows. Both faces absorb, so coverage figures based on plan area understate them.
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Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In France, school buildings are hard surfaced with high ceilings, and canteens are consistently the loudest rooms.
Over a resilient underlay. Where impact noise to the floor below is the actual complaint, the underlay does that work, not the carpet.
If you are specifying for a France project, we can give you a section, a BOQ and the honest limits of each layer. See how we support architects.
03 / Local conditions
What the buildings in France do to the specification
- Retrofit, not new build
Most rooms already exist, so the build-up has to work within the depth and the finishes you already have.
- Timber floors and divided apartments
Footfall and speech move between homes through the floor. Mass plus a resilient layer beats any surface treatment underneath.
- Hospitality volume
Restaurants and hotels take the acoustic complaints personally, because guests write them down. Absorption goes where it will not fight the design.
- Seasonal programmes
Coastal and resort work runs to a fixed opening date. We give honest dispatch and transit dates so the fit-out is not waiting on a container.
- Assembly and performance rooms
Churches, salles des fetes and civic auditoriums are stone and plaster volumes with very long decay.
- School and campus buildings
School buildings are hard surfaced with high ceilings, and canteens are consistently the loudest rooms.
04 / Room by room
What each space in a France project needs
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Reverberation time
Set against use. Speech and music want different numbers, and a dual use hall needs a decision. Most rooms already exist, so the build-up has to work within the depth and the finishes you already have.
- Wood wool acoustic panels, 1200 x 600 mm
- PET felt acoustic panels, 9, 12, 18 and 24 mm standard, tolerance plus or minus 5 percent
- Ceiling baffles and clouds, Made to the drawing, standard and custom
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Early reflections
Shaped surfaces that send energy to the rear seats rather than absorbing everything. Footfall and speech move between homes through the floor. Mass plus a resilient layer beats any surface treatment underneath.
- Wood wool acoustic panels, 20 mm
- PET felt acoustic panels, 4 to 24 mm
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
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Rear wall
The single worst surface in most halls, and the first one to treat. Restaurants and hotels take the acoustic complaints personally, because guests write them down. Absorption goes where it will not fight the design.
- Wood wool acoustic panels, 400 kg per cubic metre
- PET felt acoustic panels, 1220 x 2440 mm standard, 4 x 8 ft
- Ceiling baffles and clouds, ASTM C423
For a France interior where the finish leads, we will say plainly what each option costs you acoustically. See how we work with interior designers.
04 / Durability
Why the climate in France changes the material, not the target
France is cool and damp, with long heating seasons and cold external walls, and that narrows the material list before acoustics is discussed.
Cold wall build-ups and long heating seasons mean interstitial condensation is a real risk behind any lining. PET felt is unaffected by damp air and will not feed mould where a fabric-faced mineral product would.
The failure we design against here is condensation behind linings in older, poorly insulated stock.
Where a consultant is already engaged on a France project, we supply to their specification and send the test reports rather than describing them. More on working with acoustic consultants.
06 / Worth knowing
Where this kind of project usually fails
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Absorbing the whole room and losing the back rows
Small on the drawing, expensive on site, and almost always found after handover.
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Adding speakers to fix a reverberation problem
This is the one that comes back as a second fit-out rather than a snag.
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Ignoring the rear wall because it is behind the audience
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating it as a generic France job
Most rooms already exist, so the build-up has to work within the depth and the finishes you already have.
05 / Supply
How material reaches a France site
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Le Havre, Marseille or Antwerp, then road to site |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Le Havre |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Grooved and custom colours take longer, and we say so before you order.
Sea freight into Le Havre, Marseille or Antwerp, then road to site. Air freight for samples and urgent quantities.
Questions from France projects
What makes auditorium acoustics and soundproofing different in France?
Churches, salles des fetes and civic auditoriums are stone and plaster volumes with very long decay. Most rooms already exist, so the build-up has to work within the depth and the finishes you already have.
Where should the budget go first on a France project?
Reverberation time. Set against use. Speech and music want different numbers, and a dual use hall needs a decision. Early reflections. Shaped surfaces that send energy to the rear seats rather than absorbing everything.
Do you have an office or installation team in France?
No. We manufacture in India and supply into France. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a France site?
ships from: Palwal, Haryana, India, arrives at: Le Havre, Marseille or Antwerp, then road to site, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Grooved and custom colours take longer, and we say so before you order.
What goes wrong most often on this kind of project?
Absorbing the whole room and losing the back rows. Adding speakers to fix a reverberation problem.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Tell us the room, we will tell you the build-up
One drawing gets you a proper answer. Build-up, quantities, a delivered date, and an honest note on anything we think is the wrong approach.