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Shorter Reverberation.
Improved Intelligibility.
Better Blocking.
More Privacy.
Less Noise.
Better concentration.

What is Optimized Acoustics?

The idea is simple. You select a ceiling system to optimize sound absorption (NRC) and, where needed, you use walls or plenum barriers to successfully block sound (STC). The results are designs that comply with standards while achieving the best sound experience for the real world – at the best price.

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Acoustics Myths

There is a misconception that ceiling panels are as effective as walls at blocking sound. And where sound blocking is required, sound absorption is less important. This is not true. Sound absorption is a critical component of every room that will be occupied by people and, while lightweight, modular ceilings are not effective at blocking sound – they are, in fact, very good at absorbing it.

Find the Right Solution for You

Optimizing Good, Better, Best for Sound Absorption (NRC)*

Once you understand how people will use each space, select the appropriate sound absorption rating (NRC) for the ceiling panels. It’s where good acoustic design begins.

Select from the performance levels below:
Not sure what to select?

When deciding the sensitivity to noise inside a room, consider how people will use the room and what the ramifications will be if they are interrupted. For example, restaurants and waiting rooms have low sensitivity to noise while patient rooms and distance learning classrooms have high sensitivity to noise.

When deciding the amount of noise inside a room, consider the number of people and pieces of noisy equipment in the space. For example, private offices and medical exam rooms have a low amount of noise while large open offices and restaurants have a high amount of noise.

Sensitivity to noise High better NRC 0.80 best NRC 0.90 best NRC 0.90
Medium good NRC 0.70 better NRC 0.80 best NRC 0.90
Low good NRC 0.70 good NRC 0.70 better NRC 0.80
Low Medium High
Amount of noise in the room
best NRC 0.90

The products for you are:

  • ROCKFON Alaska®

    Excellent sound absorption for open plan offices, classrooms, retails and reception areas.

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  • ROCKFON Medical Plus

    Outstanding sound absorption and superior hygienic properties for maternity, surgery, radiology and labs.

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  • ROCKFON Sonar®

    Superior sound absorption for healthcare, education and open plan offices.

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  • ROCKFON Koral

    Great sound absorption and functionality for open-plan offices, classrooms and kitchens.

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  • ROCKFON Medical Standard

    Great sound absorption with the basic hygienic properties required for use in health care.

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  • ROCKFON Artic®

    Good sound absorption and an economical solution for corridors, stairwells and locker rooms.

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  • ROCKFON Tropic®

    High sound absorption for open plan offices, classrooms and retail.

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Optimizing Good, Better, Best for Sound Blocking (STC)*

Once you understand how adjacent rooms will be used, select the appropriate sound-blocking rating between each set of rooms.

Select from the performance levels below:
Not sure what to select?
Examples of common spaces

When deciding the sensitivity to noise inside a room, consider how people will use the room and what the ramifications will be if they are interrupted. For example, cafeterias and lobbies have low sensitivity to noise while courtrooms and operating rooms have high sensitivity to noise.

When deciding the amount of noise in adjacent rooms, consider the number of people and pieces of noisy equipment those spaces. For example, physicians sleep rooms and quiet rooms in offices have low amount of noise while commercial kitchens and restrooms have a high amount of noise.

Sensitivity to noise High better STC 45 best STC 50 best STC 50
Medium good STC 40 better STC 45 best STC 50
Low good STC 40 good STC 40 better STC 45
Low Medium High
Amount of noise in adjacent rooms
Download Sound Blocking Design Guidelines
best STC 50
  • Image of office environment Full Height Walls (Preferred)

    A best sound blocking rating of STC 50 can be achieved by extending the appropriate demising walls full height from structural slab to structural slab or roof.

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  • Plenum Barriers

    In lieu of full height walls, a best sound blocking rating of STC 50 can also be achieved using lightweight plenum barriers above the ceiling system.

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  • Ceilings Alone

    It is not possible to achieve a best sound blocking rating of STC 50 with modular, acoustic ceilings alone and an open plenum. Use full height walls or plenum barriers.

  • Image of office environment Full Height Walls

    A better sound blocking rating of STC 45 can be achieved by extending the appropriate demising walls full height from structural slab to structural slab or roof.

    Learn More
  • Plenum Barriers (Preferred)

    In lieu of full height walls, a better sound blocking rating of STC 45 can also be achieved using lightweight plenum barriers above the ceiling system.

    Learn More
  • Ceilings Alone

    It is not possible to achieve a better sound blocking rating of STC 45 with most modular, acoustic ceilings alone and an open plenum. Use full height walls or plenum barriers.

  • Image of office environment Full Height Walls

    A good sound blocking rating of STC 40 can be achieved by extending the appropriate demising walls full height from structural slab to structural slab or roof.

    Learn More
  • Plenum Barriers (Preferred)

    In lieu of full height walls, a good sound blocking rating of STC 40 can also be achieved using lightweight plenum barriers above the ceiling system.

    Learn More
  • Ceilings Alone (Not Advised)

    Trying to achieve a good sound blocking rating of STC 40 with modular, acoustic ceilings alone and an open plenum above is not advised. Use full height walls or plenum barriers.

    Learn More

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