Category: Finishes
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
Acoustic ceilings are suspended ceilings of mineral fibre tiles, perforated gypsum, timber or fabric panels designed to absorb sound. Their performance is given by the noise reduction coefficient (NRC) from zero to one; higher means more absorption.
Why it matters on a project
In offices, classrooms, mosques and restaurants, echo decides comfort and speech clarity. The right ceiling is cheaper than acoustic treatment later.
Measurement and pricing
Per square metre per type including the suspension grid, with trims and angles per linear metre.
Common mistake
Choosing tiles by look and price only without checking absorption, so large halls stay echoey.
Frequently asked questions
What NRC suits offices?
Tiles of 0.7 or more are common in open offices, with the designer setting the value for each space.
Does an acoustic ceiling block sound between rooms?
Absorption cuts echo inside a room; separation between rooms needs walls up to the structural slab.
Related terms
- Suspended (false) ceilingA secondary ceiling hung below the structural slab to conceal services and improve acoustics and lighting.
- Gypsum board (drywall)Gypsum panels on metal framing for dry walls and ceilings.
- Reflected ceiling planA drawing of suspended ceilings, their levels, lights and diffusers.
- Mock-upA full-size sample built to approve appearance and quality before full production.
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