Acoustic Stretch Ceilings: Benefits, Test Data and How to Specify Them

Hard, minimal interiors look calm in a render and sound anything but calm once a room fills with people. Glass, stone, plaster and polished floors all reflect sound, and the ceiling is usually the largest uninterrupted surface available to put that right. An acoustic stretch ceiling treats that whole plane without tiles, grid or visible fixings. Here is what it does, what the test data shows, and what to check at specification stage.

What an acoustic stretch ceiling actually does

An acoustic stretch ceiling pairs an acoustically open membrane with an absorbent core behind it. Sound passes through the membrane, is absorbed in the core and converted to a tiny amount of heat, so less of it is reflected back into the room. The result is shorter reverberation time, clearer speech and a room that feels less tiring to be in.

It is worth being precise about what this does not do. Absorption controls sound within a room. It does not stop sound passing through walls or floors into the next room; that is sound insulation, measured as Rw, and it belongs to the partitions, doors and ceiling void detailing rather than to the ceiling finish.

The test data

We publish two independent results, both tested in a reverberation room to EN ISO 354 and rated to ISO 11654:

• Polyester acoustic stretch: αw 1.00, Absorber Class A (the highest class ISO 11654 awards), in a 55 mm total build-up with a 50 mm polyester core.

• PVC micro-perforated acoustic stretch: αw 0.85, Class B, with an 80 mm foam absorber.

The practical takeaway: where a project calls for Class A or the plenum is shallow, lead with polyester. Where moisture resistance or a gloss finish matters, as in pools and spas, PVC delivers a strong, honest Class B. Every figure belongs to the build-up it was tested on, so ask for the report that matches your construction.

BB93 and BREEAM: what a ceiling can and cannot claim

BB93 sets acoustic performance standards for school rooms, and BREEAM awards acoustic credits, but both are judged at room level. A ceiling cannot meet BB93 on its own. What it does is supply the absorption figures your acoustician uses in the reverberation-time calculation, and a Class A ceiling plane makes those targets considerably easier to hit. We provide the test data in a form that drops straight into those calculations.

Where acoustic stretch ceilings earn their place

• Offices and meeting rooms: less background chatter carrying across open-plan floors.

• Schools and lecture spaces: absorption that contributes to BB93 reverberation targets.

• Restaurants and hospitality: conversation across the table without the room roaring back.

• Home cinemas: controlled reflections and a clean, dark ceiling plane.

• Pools and spas: moisture-resistant PVC membranes that keep their finish in humid air.

Specification checklist

• Confirm the target: reverberation time, absorption class, or both.

• Match the membrane to the room: polyester for Class A, PVC for wet areas and gloss finishes.

• Check the build-up depth against the tested construction.

• If confidentiality between rooms matters, deal with partitions and the ceiling void separately; the ceiling finish will not provide sound insulation.

• Coordinate lighting, sprinklers and ventilation early so penetrations do not compromise the finish.

Made in Wellingborough, backed for ten years

We manufacture our stretch ceiling systems in Wellingborough, Northamptonshire, so specifiers deal directly with the people who make the product, with no import lead times. Installations are carried out by our own teams or accredited Trade Partners, and every installation carries a 10-year warranty.

Compare the systems on our acoustic solutions page, see the polyester acoustic stretch in detail, or contact our technical team for test reports and samples.