Acoustic Demountable Wall Systems for Commercial Projects
We engineer our high‑acoustic demountable wall systems with precision laminated glass configurations to deliver predictable, lab‑verified STC performance you can rely on — from standardized testing to real on‑site installation.
Lab Tested Assembly ASTM E90 / ISO 10140 compliant
System Options for Acoustic Performance
Single Glazed Systems (SG-40 / SG-86 / SG-100)
- Optional laminated glass upgrades (PVB 0.38 / 0.76 / 1.14 mm).
- Double glazed or dual laminated setups featuring an internal air cavity.
- Ideal for spaces requiring a balance of natural light and speech privacy.
Solid Panel Systems (SG-100)
- Robust steel-faced panel construction.
- Optional mineral wool core based on your specific STC requirements.
- Fully sealed perimeter with fire-rated treatments.
- Engineered to provide complete visual separation and maximum acoustic isolation.
Acoustic Performance Depends on Configuration, Not Material Category
Acoustic performance comes from the overall system design, not just whether you choose glass or solid panels.
Do High-STC Systems Require Mineral Wool Panels?
High acoustic performance relies on three core principles:
- Damping: A damping layer effectively blocks the transmission of mid-to-high frequency sounds.
- Decoupling: You can introduce an air gap between two high-density panels, or fill the cavity with 80K/96K acoustic insulation to act as a resilient layer.
- Sealing Continuity: If your wall system has small gaps or holes, the first two principles lose their effectiveness entirely.
Why Laminated Glass Can Perform Like Solid Construction
- PVB Interlayer: This acts as a viscoelastic damping material. It converts the vibration energy from sound waves into heat, effectively stopping sound transmission.
- System Air Tightness: If gaps exist in the door frame or at the bottom of the door, sound will travel through the air and bypass the glass. This renders the PVB layer useless. Proper sealing is mandatory.
Where Acoustic Performance Is Won or Lost
Ceiling and Plenum Interfaces
- Continuous head-of-wall sealing.
- Unbroken plenum barriers.
- Eliminating sound paths through ceiling grids.
Perimeter Sealing Continuity
- Continuous gasket lines.
- Tight corner transitions.
- Secure floor-channel sealing.
Door Assemblies as the Weakest Link
- Frames fitted with continuous gaskets.
- Proper contact pressure from automatic drop seals.
- Glazing compatibility within the door leaf.
Typical STC Ranges by System Configuration
The ranges below represent typical lab-tested configurations. For a detailed explanation of system-level risks and common failure points, please refer to our Acoustic Risk Guide.
| Configuration | Typical STC Range | Suitable Spaces |
|---|---|---|
| Single Glass | 23–30 | Open spaces / Low privacy areas |
| Laminated Glass Upgrade | 30–35 | Manager offices / Moderate speech privacy |
| Double Glazed / Dual Laminated | 35–40 | Meeting rooms / Executive offices |
| Solid Panel + Infill | 40–45 | Confidential spaces / High-control areas |
Note: The values above represent typical ranges. Actual performance varies based on glass thickness, panel material, air gap width, infill material, sealing workmanship, and specific on-site ceiling and floor conditions. We highly recommend a system-level acoustic assessment during the early stages of your project.
Before you finalize your partition design, make sure your acoustic expectations align with system-level realities, rather than just isolated material specifications.
Project Inputs for Acoustic System Selection
You need more than just an STC number to finalize your partition solution. You need professional advice tailored directly to your project conditions.
1. Project Inputs Required
Submit the following details so we can evaluate your space:
- Space type and target privacy level.
- Floor-to-ceiling height.
- Ceiling condition (open plenum, suspended grid, or sealed slab).
- Floor condition (raised floor, tile, or concrete).
- Door type (glass or timber).
- Hardware requirements (drop seal type, closer brand).
- Maximum delivery dimensions (for elevator access).
2. What You Will Receive Within 24 Hours
Our acoustic engineering team will provide:
- A preliminary configuration recommendation.
- An estimated STC range based on your inputs.
- Key interface detail drawings in CAD format.
- A summary of relevant test reports.
- Interface coordination notes covering the ceiling, perimeter, and doors.
We require no minimum order quantity. We also provide rapid sampling within 3 to 4 days.
Acoustic Control Built into the System
True acoustic performance starts with upfront system design and strict manufacturing quality control. You should never have to rely solely on the skill of field installers.
1. Project Inputs Required
Submit the following details so we can evaluate your space:
- Space type and target privacy level.
- Floor-to-ceiling height.
- Ceiling condition (open plenum, suspended grid, or sealed slab).
- Floor condition (raised floor, tile, or concrete).
- Door type (glass or timber).
- Hardware requirements (drop seal type, closer brand).
- Maximum delivery dimensions (for elevator access).
2. Field-Verifiable Performance
- Seal Continuity: You can easily ensure installers place seals at all perimeter contact points between panels and frames, leaving no acoustic gaps.
- Drop Seal Contact: You can verify that the automatic drop seal fully activates and makes continuous, solid contact with the floor.
- Ceiling Bypass Inspection: You can check that a solid barrier (like a bulkhead) sits above the partition to completely block sound from traveling through the ceiling plenum.
Design for verifiability leads to easy on-site verification, which guarantees true performance.
Selecting the Right System for Your Space
SG-86 Platform
- Privacy Level: Moderate Privacy (STC 30–35)
- Best For: Open offices and manager rooms.
- Recommended Setup: Laminated glass or single glass with a sealing upgrade.
SG-100 Platform
- Privacy Level: Confidential Meetings (STC 38–45)
- Best For: Boardrooms and meeting rooms.
- Recommended Setup: Double glazed panels with an air cavity and an acoustic door.
Performance / Isolation Platform
- Privacy Level: High-Control Zones (STC 42–50)
- Best For: HR, legal departments, and executive suites.
- Suggested Systems: SG-100 double glazed configuration or a solid panel system with acoustic infill (when you also need visual privacy).
Technical Documentation & Engineering Support
We provide much more than a basic STC lab certificate. We tailor the entire acoustic system to your exact goals, ceiling conditions, and door setups. Then, we deliver all the technical documentation you need to install it correctly.
What You Receive
1. Assembly-based acoustic test reports for both glass and solid systems.
2. Pre-engineered CAD details for head-of-wall, doors, and plenums.
3. Tender-ready specification wording.
4. Pre-bid acoustic configuration reviews.
All our documentation is system-based and specific to your exact configuration.
FAQs
Q1: Does laminated glass always achieve a higher STC than solid panels?
A: No. Acoustic performance depends on the complete wall assembly — including damping, decoupling, and airtight sealing. While laminated glass uses a PVB interlayer for effective sound damping, our SG‑100 solid panel system with acoustic infill can achieve equal or higher STC ratings when properly configured and sealed.
Q2: Can demountable glass walls reach STC 45 or higher?
A: Yes. Our SG‑100 double‑glazed or solid panel systems can achieve STC 45 and above. Performance requires strict control of perimeter sealing, acoustic door integration, and elimination of sound bypass through ceiling plenums.
Q3: How does ceiling condition affect acoustic performance?
A: Sound travels through the path of least resistance. If a high‑STC wall ends at a suspended ceiling without a plenum barrier, sound will leak over the wall through the ceiling cavity. A sealed slab or plenum barrier is required to achieve the wall’s full rated performance.
Q4: Are STC ratings based on full wall assemblies?
A: Yes. All our STC ratings are based on lab tests of complete wall systems — including frames, glass or solid panels, gaskets, seals, and door interfaces. Testing individual materials alone does not reflect real‑world performance.
Q5: What is the typical STC rating for a double‑glazed demountable wall?
A: A standard double‑glazed demountable wall provides an STC rating between 35 and 45. Our SG‑100 double‑glazed system reaches the higher end of this range when paired with acoustic doors and proper ceiling sealing.
Q6: Do acoustic glass walls provide enough privacy for HR or legal departments?
A: Yes. For high‑control zones such as HR, legal, and executive offices, we recommend our SG‑100 double‑glazed or solid panel system, which delivers STC 42–50. Full confidentiality requires acoustic swing doors, automatic drop seals, and a continuous plenum barrier.
Q7: Are sliding doors as effective as swing doors for sound insulation?
A: No. Sliding doors typically have lower acoustic performance because tracks create small gaps for sound leakage. For speech privacy, swing doors with continuous gaskets and automatic drop seals are always the recommended choice.