How to Choose the Right Soundproof Wall for Your Room? (Decision Guide)

How to Choose the Right Acoustic Wall for Your Room? (Decision Guide)

: Choosing the appropriate acoustic wall must begin with thespecific requirements of each room, rather than simply opting for the highest STC rating. Meeting rooms require evaluating the desired privacy level against the STC value, bedrooms focus on solving noise issues from adjacent rooms through sound isolation, hotels must look at the entire system from walls, doors, ceilings, and flanking paths simultaneously, while cinemas or home theaters need to control both incoming and outgoing noise in both directions. Therefore, each space requires a different suitable system; there is no single soundproof wall that fits every room.

The most frequently asked question is "Which acoustic wall model is the best?", which is difficult to answer because the correct response depends entirely on the room's specific objective. Different types of rooms have completely different noise problems and expectation levels. This Decision Guide walks through common room types to show where to start considering for each space.

• Meeting Rooms

Requires Privacy → Consider STC

The main objective of a meeting room is to prevent confidential meeting content from leaking outside. The required STC level varies based on the sensitivity of the information, ranging from general team meeting rooms where STC 40-45 is sufficient, up to executive boardrooms or HR rooms that may require STC 55 and above. In addition to the main walls, glass partitions often used in meeting rooms for transparency should also be inspected, as they represent a weak point where solid walls lose their effectiveness if standard single-glazed glass is used.

• Bedrooms

Noise from Adjacent Rooms → Focus on Sound Isolation

A bedroom's objective differs from a meeting room because the goal is undisturbed sleep rather than confidentiality. Common problems include noise from adjacent rooms in condominiums or apartments. The appropriate STC level for typical bedrooms is generally around STC 45-50, which is sufficient to make normal conversations from next door barely audible. For bedrooms facing streets or external noise sources, both walls and windows must be considered together, as windows are usually where external noise penetrates much more easily than solid walls.

• Hotel

Requires Guest Privacy → Must Consider Wall + Door + Ceiling + Flanking

Hotels are among the most complex spaces for acoustic wall design because guest privacy depends not just on the guest room walls, but on the entire integrated system. Inter-room partitions must have a sufficiently high STC rating, guest room doors must be Acoustic Doors rather than standard doors, ceilings must extend to the actual structural floor to close flanking paths above the ceiling, and other high-risk points such as electrical outlets or M&E service penetrations must be inspected as they often pierce guest room walls. Since hotel guests are typically more sensitive to noise than usual in unfamiliar environments, no matter how high the wall's STC rating is, if other points in the system fail, the guest experience will still be affected.

• Cinema / Home Theater

Must Control Both Incoming and Outgoing Noise Simultaneously

This type of room differs from others in that it requires blocking sound in two directions simultaneously. The first direction is preventing external noise from disturbing the viewing experience, and the second is preventing heavy bass from the room's sound system from leaking out to disturb adjacent areas. This adds a challenge because low-frequency sounds penetrate walls much more easily than high-frequency sounds, even if the wall has a high STC rating by general standards. Therefore, such spaces typically require the highest level of acoustic wall systems combined with specific low-frequency Transmission Loss data evaluation, rather than just looking at a single STC number.

• Office: Meeting Room / Focus Room / Executive Room

Modern offices typically feature multiple levels of meeting spaces with distinct requirements.

• Meeting Room: General team meeting rooms used frequently, focusing on standard privacy where STC 45-50 is usually sufficient.
• Focus Room: Small rooms for individual phone calls or video conferences. Despite the small space, considerations should include both blocking external noise to maintain concentration and internal sound absorption so that voices transmitted through the microphone are clear, as small rooms are more prone to echo and reverberation issues than large ones.
• Executive Room: Executive boardrooms or rooms for discussing critical business data, requiring STC 50-55 and above, because the business impact of a data leak is much higher than in general meeting rooms.

Decision Summary Table

Trandar Acoustics offers the TSIS system under Trandar Hitech Wall, covering everything from STC 43 to STC 77 across all levels as shown in the table above, along with the Trandar Hitech Ceiling system for areas that require blocking flanking paths above ceilings, such as hotels or studios.

If you are still unsure where to begin for your room, feel free to chat with the Trandar Acoustics team and share your room details. We are happy to help analyze and recommend the system that specifically fits your requirements.