Homein Sound isolation tested STC 45 acoustic steel door

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:

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.

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.