Interior design

The 7 Types of Open Ceilings

Explore 7 types of open ceilings with sound absorption that leave the plenum exposed for a raw, industrial aesthetic and easy access to building services.

Modern public concourse with suspended circular acoustic rafts, exposed ventilation services, reception desk, ticket gates, and floor-to-ceiling windows bringing natural daylight into the space.

Baffle Ceiling

A baffle ceiling consists of vertically suspended acoustic elements such as Rockfon Contour that absorb sound while keeping the plenum visually open. The spacing between the baffles allows services and structure to remain visible, making this open ceiling type well suited to interiors with exposed soffits. The acoustic baffles can be arranged in parallel rows or in more expressive layouts, introducing rhythm while supporting acoustic comfort.

Open Plan Office in WPP in Manchester United Kingdom with Rockfon Contour

Floating Ceiling Panels

Floating ceiling panels use individually suspended acoustic panels such as Rockfon Eclipse or Rockfon Canva Island panels positioned below the soffit to absorb excess noise without closing the ceiling. Available in a range of shapes, sizes, and colours, the panels can be suspended at different heights to define zones, frame circulation routes, or even integrate lighting while maintaining an open ceiling.

Open Plan Office in Biuro Solano Group in Warszawa Poland with Rockfon Eclipse Colour A-Edge

Direct Fix Ceiling Tiles

A direct-fix ceiling uses acoustic ceiling tiles bonded directly to the soffit, preserving the maximum ceiling height while improving acoustic comfort. Without the need for a suspended grid, this ceiling type is a convenient way to reduce reverberation in spaces where maintaining room height is a priority or where suspended ceilings are not practical. Rockfon acoustic ceiling tiles with the B edge can be installed using the adhesive method.

Open Plan Office in Omroep Brabant in Son en Breugel Netherlands with Rockfon Color-all, Charcoal, B-edge

Hybrid Plenum Ceiling

A hybrid plenum ceiling combines suspended acoustic ceiling areas with exposed services within the same space. Acoustic treatment is introduced only where required, while other areas remain open – or feature suspended acoustic solutions such as the method featured this image – to reveal the structure and building services. This approach supports acoustic comfort while preserving the spacious character often associated with open-plenum interiors. This image features Rockfon Color-all acoustic ceiling tiles in combination with Rockfon Eclipse in the Square shape.

Canteen in Grodan Office in Roermond Netherlands with Rockfon Color-all A-Edge and Rockfon Eclipse Colour A-Edge

Floating Raft Ceiling

A floating raft ceiling consists of largescale suspended ceiling sections positioned below the soffit to provide targeted acoustic treatment while leaving the surrounding plenum exposed. Rafts can be created using framed modular ceiling systems such as Rockfon OneFrame or oversized floating ceiling panels, making them suitable for defining activity zones within open-plan interiors.

Related: 18 Examples of Floating Raft Ceilings

Security in Copenhagen Airport in Copenhagen Denmark with Rockfon Blanka X-Edge, Rockfon OneFrame

Open Beam Ceiling

An open beam ceiling leaves structural beams exposed while introducing acoustic solutions such as Rockfon Color-all or the seamless solution Rockfon Mono Acoustic between them. This technique preserves the architectural rhythm of the structure while reducing reverberation in the room. Depending on the design and noise control strategy, the acoustic solutions can be installed selectively.

Related: 21 Inspiring Acoustic Ceiling Design Ideas  

Auditorium in Manufacture des Tabacs de l'Université de Strasbourg in Strasbourg France with Rockfon Color-all

Mixed Suspended Solutions

A mixed suspended ceiling combines two or more suspended acoustic solutions – such as baffles, floating panels, rafts, or ceiling tiles – all within the same space. Each installed solution responds to the different acoustic or spatial requirements, allowing for variety, zoned areas, and a highly dynamic ceiling composition.

Open Plan Office in ACS Dublin in Dublin Ireland with Rockfon Contour  and Rockfon Eclipse