How to Use Acoustic Panels
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
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Use acoustic panels to absorb echo inside a room: let them expand fully, mount them on the walls sound hits first, and space them out instead of covering every inch. Start with the wall behind the mic, then add panels where the echo remains.
Let the panels expand to full size
Vacuum-sealed foam arrives flat, so open the pack and give the panels time to regain their shape before you mount them. The TOUO panels expand within 24-48 hours, or soak them in warm water for 3-5 minutes, wring them dry and place them in a dryer at medium heat for 20-25 minutes. The Knightsacoustic panels recover their shape within 3-5 hours of dispersal and ventilation.
Mount the panels where sound hits
Put panels on the walls the sound hits first: behind and beside the mic, at ear height, and on the wall you face while you record. The SD SODOCT panels mount on walls and ceilings with construction adhesive or nano double side tape, and the Temgcuam panels mount with 270 adhesive pads and no drilling. Press each panel flat and hold it until the adhesive grips.
Arrange the panels in a pattern
Space the panels out in a grid or a checkerboard instead of packing them into one corner, and leave gaps so the wall still takes some sound. The Temgcuam wedge-cut panels can be arranged in various configurations to suit different room layouts, and the TOUO panels come in multiple colors for mix-and-match combinations. Step back, listen for echo, and move a panel before you add more.
Keep the panels clean and in place
Foam holds on a clean, dry and smooth wall, so check the wall before you mount and keep dust off the panels. If a panel peels off, clean the wall again and remount it with fresh adhesive, since dusty, uneven, damp or peeling walls will not hold the pads. The SD SODOCT pyramid panels also work on ceilings, so use the same clean-wall check overhead.
What you need
SD SODOCT 24 Pack 2” Thick Pyramid Acoustic Foam
A 24 pack of 2 inch thick pyramid panels covering 24 sq ft, for walls and ceilings in home studios, podcast rooms and home theaters, with flame retardant foam.
- Thickness: 2 in
- Fire-rated
- Panels in pack: 24
- Material: Acoustic Foam
- 6-month warranty stated
TOUO 12 Pack Acoustic Panels
A 12 pack of 1 inch thick wedge panels that expand within 24-48 hours, with 60 pieces of double-sided adhesive tape for walls in studios and offices.
- Thickness: 1 in
- Fire-rated
- Panels in pack: 12
- Material: Foam
Knightsacoustic 50 Pack Sound Proof Foam Panels
A 50 pack of 2 inch thick wedge panels that recover their shape within 3-5 hours, for walls, doors and ceilings in studios, theaters and game rooms.
- Thickness: 2 in
- Panels in pack: 50
- Material: Foam
Temgcuam 54 Pack Acoustic Foam Wall Panels
A 54 pack of 1 inch thick wedge panels with 270 adhesive pads for tool-free mounting on clean, dry and smooth walls and ceilings.
- Panels in pack: 54, the most here
- Material: Acoustic Foam
These come from our ranked list Best Acoustic Foam, which compares them spec by spec.
Frequently asked questions
How long do acoustic panels take to expand?
The TOUO panels expand within 24-48 hours, or soak them in warm water for 3-5 minutes and dry them at medium heat for 20-25 minutes. The Knightsacoustic panels recover their shape within 3-5 hours of dispersal and ventilation.
Can acoustic panels go on the ceiling?
Yes. The SD SODOCT panels install on walls and ceilings, and the Temgcuam panels install on walls or ceilings with adhesive pads. Mount them the same way as on a wall, on a clean, dry and smooth surface.
Do acoustic panels keep outside noise out?
No. Foam absorbs echo and reverberation inside the room; it does not keep outside sound out, and the SD SODOCT panels are not intended for full soundproofing or noise isolation from outside. Use them to manage the sound already in the room.
What holds acoustic panels on the wall?
The Temgcuam panels come with 270 adhesive pads, and the TOUO panels come with 60 pieces of double-sided adhesive tape. The SD SODOCT panels mount with construction adhesive or nano double side tape, and the Knightsacoustic panels need adhesive bought separately.
Ranked acoustic panels lists
More how-to guides
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