Acoustic office partitions

Acoustic office partitions for meeting rooms, boardrooms and HR offices: Rw ratings, doors, seals and ceiling void barriers, with typical UK costs.

In short: Acoustic office partitions are walls and glazing built to a higher sound reduction rating, with matched acoustic doors, seals and treatment of the ceiling void, so conversations in meeting rooms and private offices stay private. They suit boardrooms, HR and legal offices, video call rooms and focus spaces. In the UK double-glazed acoustic systems typically cost around £500 to £900 per linear metre.

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Sound insulation in partitions is measured in decibels as an Rw rating from laboratory tests. As a rough guide, around 35 dB lets normal speech be heard and partly understood, around 45 dB lets speech be heard but mostly not understood, and around 50 dB or more is suitable for confidential conversations. Achieving that on site needs the whole room to perform, not just the wall panels, because sound finds the weakest path.

The usual weak points are the door, gaps where the partition meets the ceiling grid, the ceiling void above the wall, back-to-back sockets, air conditioning ducts running between rooms and the junction with external glazing. A properly specified acoustic room deals with each of these: acoustic door sets with drop-down seals, a barrier in the ceiling void or a wall to the slab, sealed service penetrations and attenuated ventilation routes. It is also worth considering what happens inside the room, as hard glass and bare floors make speech echo and carry further.

What is included

Agreement of a target sound performance for each room
Partition build to the required Rw, glazed, solid or a mix
Acoustic door sets with perimeter seals and drop-down threshold seals
Ceiling void barriers or walls taken to the slab above
Sealing of junctions with walls, floors, mullions and ceiling grids
Acoustic detailing around sockets, cables and service penetrations
Advice on ventilation paths and cross-talk through ductwork
Advice on soft finishes and wall panels to reduce echo inside the room

Who it is for

Boardrooms and client meeting rooms
HR, legal, finance and medical offices handling confidential conversations
Video call rooms and phone booths
Private offices next to busy open-plan areas
Offices next to noisy plant, kitchens or breakout spaces

How much does it cost?

As a guide, double-glazed acoustic partitions typically cost around £500 to £900 per linear metre, and acoustic door sets roughly £1,000 to £2,500 each. Ceiling void barriers and acoustic upgrades to plasterboard walls are priced on top. See our full cost guide.

How it works

Set the target

We agree how private each room needs to be, from general meetings to confidential calls, and set a sound performance target to match.

Find the flanking paths

The survey checks the ceiling void, floor, external walls, ductwork and services for routes that would let sound bypass the partition.

Build and seal

The partition, doors, void barriers and seals are installed with every junction sealed, because small gaps cost a lot of performance.

Check

Doors are adjusted so seals engage fully, and the room can be tested on site if a measured result is required.

Acoustic office partitions: FAQs

What Rw rating do I need for a meeting room?

For general meeting rooms, around 40 to 45 dB Rw is common. For confidential rooms such as HR, legal and boardrooms, aim for around 45 to 50 dB or more, with an acoustic door and a treated ceiling void. Remember that the rating is a laboratory figure and site performance is usually lower, so specifying a little higher than the bare minimum is sensible.

Why is my new meeting room still not private?

The most common reasons are a standard door without seals, a gap under the door, the partition stopping at the suspended ceiling with an open void above, and air conditioning or return air paths linking rooms. Background noise also matters: in a very quiet office, speech carries further. Treating the door and ceiling void usually makes the biggest improvement.

Is double glazing always better acoustically?

Usually, but only when the panes and cavity are designed for sound. Panes of different thicknesses, laminated acoustic glass and a deep enough cavity give the best results. A double-glazed partition with a poorly sealed door can perform worse than good single glazing with an acoustic door. The whole room has to be considered as a system.

Can existing partitions be upgraded for sound?

Often, yes. Common upgrades include replacing doors with acoustic door sets, adding drop-down seals, fitting barriers in the ceiling void, adding a second layer of plasterboard to stud walls, sealing gaps and penetrations, and adding absorbent panels inside the room. A survey identifies which weak points are letting the most sound through.