Acoustic doors and windows are the most critical links in the sound-insulation chain. No matter how high a wall's performance, a weak door or glazing brings the total Rw down to that level. Certified acoustic doors deliver Rw 32-44 dB, acoustic glazing Rw 38-46 dB. Automatic drop seals, twin-lip gaskets and correct frame installation are essential.
What is an acoustic door? How does it differ from a standard door?
An acoustic door is a door system whose frame, leaf and seals are specifically designed for sound-transmission loss. A standard interior door is rated at Rw 22-25 dB; a certified acoustic door delivers Rw 32-44 dB. The 10-20 dB gap is huge in acoustic terms (every 10 dB roughly halves perceived loudness).
Which performance level is required where?
- Rw 28-32 dB: internal residential, standard office
- Rw 35-38 dB: hotel room door, meeting room
- Rw 40-44 dB: studio, recording room, cinema, premium hotel
- Rw 45+ dB: professional recording studio (double-door system)
Acoustic-door components
- Steel or densified MDF leaf (min. 35-45 kg/m² density)
- Twin-lip continuous seal around the door
- Automatic drop seal pressing against the floor when closed
- Acoustic glass (vision panel) — for Rw 32+ glazed versions
- Certified frame installation — mortar of the same mass density as the wall
What is acoustic glass?
Acoustic glass differs from single or standard double glazing through a specific lamination and varying-thickness combination designed for sound-transmission loss:
- Asymmetric double glazing (e.g. 6 mm + 16 mm air + 4 mm) — Rw 38-40 dB
- Laminated acoustic glass (44.2 + cavity + 6.2) — Rw 42-46 dB
- Triple glazing (4-8-4-12-4) — Rw 40-44 dB
Most common mistake: frame installation
The most common acoustic-door mistake we see in the field is installing a high-performance door's frame with PU foam. Foam transmits vibration and does not seal properly; it can drop the door's Rw by 5-10 dB. The correct installation uses mortar + acoustic mastic.
Door + window for facade insulation
A facade's Rw is calculated as a weighted sum of surface areas. Even with a wall at Rw 55 dB, if a window covers 30% of the area at Rw 30, the overall facade caps near 35 dB. Acoustic glazing must therefore be selected close to wall performance.
Certificates
- EN ISO 717-1 Rw: certified sound-transmission loss (always demand it)
- EN ISO 10140-2: laboratory test method
- EN 13501-1: fire-resistance class (EI 30/60 for doors)
Products in This Category
For each sub-service we apply a dedicated engineering approach and certified material selection. Click on a title to explore.
Sound-rated acoustic door
DetailsAcoustic window / sash window
DetailsAcoustic gaskets and threshold systems
DetailsWhy Dedatek Products?
Expert Team
With our acoustic engineers and experienced application team.
Guaranteed Results by Measurement
Pre and post application dB measurement, detailed report.
Turnkey Delivery
Survey, simulation, application, inspection — the entire process at Dedatek.
Certified Materials
BS476 Class 0, UNI 9175, Firex non-flammability standards.
Supply & Installation Process
Inspection & Measurement
On-site acoustic measurement and noise source identification.
Simulation & Design
Acoustic simulation and detailed project with professional software.
Installation
Installation with certified materials by our experienced team.
Inspection & Report
Result measurement and performance guarantee report.
Certifications & Standards
- BS476 Class 0 (non-flammable)
- UNI 9175:2008 M1
- Firex non-flammability certificate
- CE / ISO / TSE compliance