PET acoustic panels: rPET Panel, Groove and Flex Groove
PET acoustic panels turn post-consumer bottles into a dense polyester felt that absorbs sound, takes a CNC cutter like MDF and comes in a colour palette architects actually use. Re-Sound is a Stretch Group brand. We manufacture in our own plants in Beveren-Waas (Belgium) and Częstochowa (Poland); the rPET range is produced in Częstochowa. The range has three models. rPET Panel is the flat sheet: cut it, mill it, drill it and paint it for walls, ceilings and furniture. rPET Groove adds a grooved surface in the ten stock colours and three thicknesses for higher absorption on walls and ceilings. rPET Flex Groove keeps the grooved look but bends around columns and curved walls down to a 500 mm radius. All three are OEKO-TEX® Standard 100 certified, reach B-s1,d0 or B-s2,d0 under EN 13501-1 and can be taken back for recycling at end of life. Use the table below to compare PET acoustic panels by format, absorption and lead time, then open the model page for finishes and downloads.
Compare the models
Values as published on the model pages; measured values are quoted with their test standard.
| Model | Format | Thickness | αw (ISO 11654) | NRC (ASTM C423) | Fire class (EN 13501-1) | Recycled content | Finishes / colours | Mounting | Lead time |
|---|---|---|---|---|---|---|---|---|---|
| rPET - Panel | 2 800 × 1 220 / 2 440 × 1 220 mm | 9 / 12 mm | up to 1.00 | up to 0.95 | B-s1,d0 / B-s2,d0 | 100 % | 10 colours | Direct screw fixing or adhesive, no pre-drilling | ≈ 3–4 working weeks |
| rPET - Groove | 600 / 1200 mm wide | 12 / 24 / 36 mm | — | 0.55 / 0.75 / 0.90 | B-s1,d0 / B-s2,d0 | 100 % | 10 colours | Adhesive, Z-clips, screws or battens | ≈ 3–4 working weeks |
| rPET - Flex Groove | — | 9 mm | — | — | B-s1,d0 / B-s2,d0 | 100 % | 10 colours | Adhesive mounting on curved substrates | ≈ 3–4 working weeks |
Choose your model
Why Re-Sound
Our own plant in Częstochowa
Re-Sound is a Stretch Group brand. We manufacture in our own plants in Beveren-Waas (Belgium) and Częstochowa (Poland).
Free take-back programme
At end of life we collect the panels and process them back into raw material — free of charge within Belgium, at logistics cost elsewhere in the EU.
Certified where it counts
Every rPET model is OEKO-TEX® Standard 100 certified; the EN 13501-1 classification reports are available on request.
Where they are used
- Open-plan offices and call centres
- Schools, lecture halls and libraries
- Restaurants and hospitality
- Healthcare waiting areas
- Retail, showrooms and exhibition stands
- Curved walls and columns (Flex Groove)
Frequently asked questions
Are PET acoustic panels really made from recycled bottles?
Yes. The felt is made from post-consumer PET bottle fibre: rPET Panel and rPET Flex Groove are made entirely from recycled PET, and rPET Groove is made from the same recycled PET felt. Every model is OEKO-TEX® Standard 100 certified, so the material is suitable for schools and healthcare.
How much sound do PET acoustic panels absorb?
It depends on thickness and mounting. The rPET Panel datasheet gives the 12 mm panel αw 0.25 (class D) fixed directly on the wall, 0.60 (C) with a 50 mm air cavity and 1.00 (A) with a 50 mm cavity and 50 mm stone wool; the 9 mm panel is not yet measured. rPET Groove is rated NRC 0.55 (12 mm), 0.75 (24 mm) and 0.90 (36 mm). Panels glued directly to the wall absorb less than panels with a cavity behind them.
What fire class do recycled PET acoustic panels have?
Reaction to fire to EN 13501-1 depends on the colour, for all three models: white, grey and black reach B-s1,d0, all other colours B-s2,d0, in the Standard and the FR version alike. Classification reports are available on request.
Can I cut and paint PET acoustic panels on site?
Yes. rPET Panel behaves like MDF: cut, mill, drill and screw it with standard tools, and paint it in any RAL or NCS colour. The grooved panels are cut to size on site with a fine-tooth blade.
What is the lead time for PET acoustic panels?
About 3–4 working weeks from our Częstochowa plant, delivered EXW; minimum order one panel. Made-to-order colours and large projects are scheduled in production batches — ask us for a binding date before you order.
Is PET felt fire-safe?
Yes. Reaction to fire to EN 13501-1 depends on the colour: white, grey and black rPET panels reach B-s1,d0, all other colours B-s2,d0, in the Standard and the FR version alike, which suits both private homes and public buildings. Classification reports are available on request; check the exact requirement for your project with your acoustician or fire-safety adviser.
Can I cut and paint rPET panels?
Yes, rPET panels can be both cut and painted. Cut them with a knife (even a ceramic kitchen knife), a circular saw, a panel saw or an angle grinder fitted with a metal-cutting blade. Re-Sound UV-prints rPET panels in-house, so you can order custom graphics, or you can paint the panels yourself and use them as a canvas for your own acoustic artwork.
How much sound does a PET panel absorb?
It depends on the thickness and, above all, on the mounting. Measured to EN ISO 354, the 12 mm rPET Panel reaches αw 0.25 (class D to EN ISO 11654) fixed directly on the wall, 0.60 (class C) with a 50 mm air cavity and 1.00 (class A) with a 50 mm cavity and 50 mm stone wool behind it; the 9 mm panel is not yet measured. So an air cavity or mineral wool behind the panel raises the absorption sharply and reaches lower frequencies. Check the exact requirement for your room with your acoustician.
See and feel the material
Order a free sample kit or send us your drawings for a quote — our team answers within one working day.