STC 45 Sound-Isolation Acoustic Steel Door by Homein
In today's modern buildings, whether commercial, industrial, or residential, noise control is more critical than ever. One of the most effective solutions for blocking sound transmission between rooms is the acoustic steel door. Homein’s STC 45 sound-isolation acoustic steel door combines high-level acoustic performance, durability, and design flexibility—making it a top choice for noise-sensitive environments.
1. What Is an Acoustic Steel Door?
An acoustic steel door is a specially engineered door designed to reduce sound transmission between spaces. It typically consists of a steel outer shell combined with internal sound-dampening materials. The performance of these doors is measured by their Sound Transmission Class (STC) rating. Higher STC ratings indicate better sound isolation.
2. Acoustic Steel Door Applications
Acoustic steel doors are essential in a wide range of settings, including:
- Recording studios
- Theaters and auditoriums
- Hotels and conference rooms
- Hospitals and healthcare facilities
- Office buildings and meeting rooms
- Educational institutions
- Data centers and control rooms
They are used anywhere privacy, comfort, and sound control are necessary.
3. Acoustic Steel Door Standards and Grades
Acoustic doors are tested and rated according to international standards, including:
- ASTM E90 / ASTM E413: Standard test methods for determining STC.
- ISO 10140-2 / ISO 717-1: International standards for airborne sound insulation.
Grades are typically defined by the STC rating:
- STC 35-40: Basic sound control
- STC 41-50: High-performance sound isolation
- STC 51+: Very high-performance soundproofing
Homein’s STC 45 door is considered a high-performance acoustic solution suitable for demanding environments.
4. Why Choose an Acoustic Steel Door?
Choosing an acoustic steel door offers numerous benefits:
- Superior sound insulation
- Enhanced privacy and comfort
- Improved productivity and concentration
- Fire-rated and secure
- Durable and low-maintenance
- Customizable design for aesthetics and functionality
5. STC 45 Acoustic Steel Door SGS Test Data by Homein
Homein’s STC 45 acoustic steel door has undergone third-party testing by SGS, a globally recognized inspection and certification company. The door achieved an STC rating of 45, confirming its ability to effectively reduce noise transmission by up to 45 decibels. The SGS test report verifies:
| Frequency (Hz) | Transmission Loss (dB) | Remarks |
|---|---|---|
| 100 | 35.7 | Lower TL at low frequency; typical for doors |
| 125 | 40.5 | Improved TL at low-bass range |
| 160 | 39.0 | Slight dip, but still good |
| 200 | 39.7 | Stable response in low-mid range |
| 250 | 42.6 | Strong performance starting here |
| 315 | 44.4 | Increasing TL, effective in mid-range |
| 400 | 45.8 | High TL in speech frequency range |
| 500 | 45.7 | Stable and consistent |
| 630 | 45.2 | Maintains performance |
| 800 | 43.9 | Minor dip, still within high isolation range |
| 1000 | 42.0 | Slight drop, but still good isolation |
| 1250 | 44.9 | Rebounding TL values |
| 1600 | 46.0 | Peak TL, excellent mid-to-high frequency blocking |
| 2000 | 46.5 | Strong performance continues |
| 2500 | 46.5 | Consistent with mid-high isolation pattern |
| 3150 | 43.3 | Slight dip, but minimal effect on STC |
| 4000 | 49.1 | Excellent high-frequency blocking |
| 5000 | 52.7 | Exceptional performance; useful for mechanical noise blocking |
Performance Interpretation
- Low Frequencies (100–250 Hz): The door performs adequately, with TL values between 35.7–42.6 dB. These frequencies are hardest to block due to longer wavelengths, and most doors show lower TL here.
- Speech Frequencies (250–2000 Hz): This is the most critical range for human speech. Homein’s STC 45 door shows strong performance (42–46.5 dB), making it highly effective for offices, studios, or conference rooms.
- High Frequencies (2000–5000 Hz): The TL values rise dramatically (up to 52.7 dB), indicating excellent attenuation of high-frequency noise such as alarms, whistles, or HVAC equipment.
This STC 45 rating means Homein doors are ideal for environments where confidentiality or quietness is essential.
6. Homein STC 45 Acoustic Steel Door Material and Construction
Homein’s acoustic door construction includes:
- Steel face sheets: Galvanized or stainless steel skins for strength
- Sound-insulating core: Multi-layer acoustic materials including Ultra fine fiber glass wool, sound boards, and damping layers
- Sealed frame system: Acoustic seals around the door perimeter
- Precision machining and ingenious structural design ensure that all door components fit tightly together, creating a seamless closure with no gaps, effectively reducing sound transmission.
- The multilayer laminated glass blocks sound transmission, while the broken-bridge glass frame reduces sound vibration transmission through the frame structure.
This multi-layer design is optimized to absorb and block a wide range of sound frequencies.
7. Homein STC 45 Acoustic Steel Door Hardware
High-quality hardware is essential for acoustic performance. Homein provides:
- Heavy-duty surface mounted hinges:
- Heavy-duty surface mounted hinges avoid mortising the door, preventing gaps that weaken sound isolation. By mounting externally, they reduce sound and vibration transmission through the door, maintaining structural integrity and improving overall acoustic performance.
- Airtight Door Handle:
- Designed to operate compression latches or cams that help pull the door tightly against a gasket
- Concealed or surface-mounted automatic door bottoms
All hardware is selected or engineered to maintain the acoustic integrity of the door assembly.
8. Homein STC 45 Acoustic Steel Door Features
Key features include:
- Certified STC 45 performance
- Fire-rated options available
- Durable powder-coated or stainless finish
- High-performance perimeter sealing
- Smooth and silent closing
- Leakage control for HVAC optimization
- Suitable for both single and double-leaf configurations
9. Customized Size and Color for Homein STC 45 Acoustic Steel Door
Homein offers full customization:
- Size: Standard and non-standard dimensions are available for a perfect fit
- Finish: Choose from powder-coated RAL colors, woodgrain laminates, or stainless steel
- Vision panels: Optional acoustic-rated glass inserts
- Louver options: Sound-rated ventilated panels if needed
This allows integration into any interior design without compromising acoustic performance.
10. Competitive Price
While high-performance acoustic doors are often costly, Homein strikes the balance between performance and affordability. With in-house production and bulk material sourcing, Homein offers STC 45 acoustic doors at competitive prices—ideal for projects that demand quality without breaking the budget.
Conclusion
The Homein STC 45 sound-isolation acoustic steel door is a robust, versatile solution for environments where noise control is crucial. With certified SGS test results, premium materials, advanced construction, and customizable options, it meets the needs of architects, contractors, and property owners seeking dependable acoustic solutions at a fair price. For inquiries, technical data, or quotations, contact Homein directly.
