Soundproof Panels FAQ

Soundproof panels work on echo, not on noise coming through your walls: a 2 in. foam or fiberglass panel soaks up most of the mid-range sound that hits it (NRC 0.75 for an Auralex Studiofoam Wedge, 1.00 for Owens Corning 703) but does almost nothing about the sound passing through the wall behind it.

No, acoustic panels don't soundproof a room: they're rated by NRC, which measures how much echo they absorb, and a 2 in. Owens Corning 703 panel rates NRC 1.00, lists no STC at all and weighs just 0.5 lb/sq ft. So do acoustic panels soundproof anything?

Yes, acoustic panels work on echo: by the standard Sabine formula, eight 2 by 4 ft panels of 2 in. fiberglass take the echo time of a bare 12 by 15 ft room from about 1.8 seconds down to 0.7.

No, acoustic panels don't keep sound out or in. They soak up echo in the room they hang in, and at 0.5 lb/sq ft for a 2 in. fiberglass panel (Owens Corning 703) they're far too light to change what gets through the wall.

No, acoustic panels don't help with outside noise. Traffic gets in through windows, vents and gaps, and a 2 in. fiberglass panel adds only 0.5 lb/sq ft (Owens Corning 703) to a wall that already does better than its windows.

Soundproofing panels don't work for noisy neighbors if they're the usual foam, fiberglass or fabric absorbers: a 2 in. panel weighs 0.5 lb/sq ft and adds almost nothing to an insulated 2x4 wall, rated STC 34 in USG lab tests, when loud speech stays audible until STC 50 (Johns Manville).

Soundproof panels work one of two ways: absorbers (foam, fiberglass, felt) turn sound bouncing around a room into tiny amounts of heat, which cuts echo, and barriers (vinyl, drywall, damped boards) use mass, decoupling and damping to stop sound from crossing a wall.

Acoustic panels soak up sound bouncing around inside a room, so echo dies away faster: six 2 by 4 ft panels can cut the echo time of a hard 12 by 15 ft room from 1.8 seconds to 0.8.

Acoustic panels are made of a porous core, usually fiberglass, mineral wool, open-cell foam or pressed polyester (PET) felt, that's wrapped in fabric or faced with wood slats.

The best material to block sound is the heaviest airtight layer you can add, built so the two sides of the wall don't touch.

Rigid fiberglass and mineral wool board absorb the most sound per inch: 2 in. of Owens Corning 703 rates NRC 1.00 and 2 in. of Rockwool Comfortboard 80 rates 0.95, compared with 0.75 for 2 in. acoustic foam.

Go with a breathable polyester acoustic fabric rated ASTM E84 Class A, like Guilford of Maine FR701, which its maker rates 95% acoustically transparent (Duvaltex FR701 spec).

Most rooms need acoustic panels on 15 to 25% of the wall area, which works out to 9 to 14 panels of 2 by 4 ft for a 12 by 15 ft room with an 8 ft ceiling. That's Primacoustic's starting point; studios want 25% or more.

Put acoustic panels at the first reflection points first: the spots on the side walls where sound from your speakers or your voice bounces once on its way to your ears.

No, you don't need to cover the entire wall with acoustic panels: Primacoustic's starting point for cutting echo is 15 to 25% of a room's wall area.

There's no required spacing for acoustic panels: they can butt edge to edge or sit several feet apart, because where each panel hangs matters a lot more than the gap next to it.

Acoustic panels work flush on the wall, and if you've got the room, hang them 2 to 4 in. off it: GIK Acoustics says a gap that size "can increase low-frequency performance." So how far off the wall should acoustic panels be?

Hang acoustic panels with their center at seated ear height, about 4 ft off the floor, so a 2 x 4 ft panel stood on end runs from 2 ft to 6 ft. That height catches seated eye level, 43 to 51 in. in ADA design figures, and standing eye height from 56 in. (5th percentile women) to 69 in. (95th percentile men) in the Army survey data tabled by NC State's Ergonomics Center.

The 38% rule in room acoustics says to put your listening seat 38% of the room's length from the front wall, which is usually where the bass is flattest.

Yes, put acoustic panels behind speakers that sit more than 8 in. from the front wall, and make them 3 in. thick or more.

To install acoustic wall panels, screw a mounting clip into a drywall anchor and hang the panel on it: Z-clips for panels with a wood frame, impaling clips for bare fiberglass board.

Screw acoustic wall panels up with clips, unless it's lightweight foam you'll never move.

For Z-clip mounting, ATS Acoustics' kit uses #8 x 3/4 in. screws to fix the wall clips into plastic anchors and #6 x 1 in. screws to fix the panel clips into the wood frame (ATS Z-clip kit).

To hang acoustic panels on a ceiling, drive four eye-screws per panel into a joist (or into butterfly anchors where the ceiling is hollow), then hang the panel on cables with at least 2 in. of air above it.

To install wooden acoustic panels, drive black drywall screws through the felt backing in the gaps between slats, into studs, wall anchors or furring strips: Primacoustic recommends at least 20 screws per panel for its ECOScapes Slat Wall, tightened "only enough to hold the panel in place" (owner's manual).

To install a TV on acoustic wall panels, bolt the mount through the panels into the studs, and swap the slats and felt behind the mount plate for a solid plywood spacer.

To cut acoustic panels, pick the tool that fits the core: an electric carving knife for foam, a serrated insulation knife for fiberglass or mineral wool board, and a fine-tooth saw for wood slat panels.

You can paint acoustic panels that are made to be painted, but even those lose absorption: Primacoustic says painting its Paintables panels cuts NRC by at least 0.05 to 0.10 (Primacoustic painting guide).

You can put acoustic panels on a door, and they'll soak up echo on your side of it, but they barely cut the noise coming through.

How you remove soundproof panels depends on how they went up: clip-hung panels lift straight off and leave small anchor holes, pinned panels leave pinholes, and glued foam has to be cut free and the wall cleaned up.

To make acoustic panels, set a 24 x 48 in. board of 2 in. rigid fiberglass inside a 1x4 wood frame and wrap the whole thing in breathable fabric.

Acoustic panels cost $49.95 to $119 each for fabric-wrapped panels 2 x 2 ft to 2 x 4 ft, at maker list prices as of October 2026.

You can buy acoustic panels at Home Depot, Lowe's, Costco and Amazon, or straight from makers like ATS Acoustics and GIK Acoustics.

The best soundproof panels for echo are fabric-wrapped fiberglass or mineral wool at least 2 in. thick, rated NRC 0.95 to 1.05; 2 in. Auralex Studiofoam trails behind at 0.75.

The best soundproof panels for bedrooms are fabric-wrapped fiberglass or mineral wool panels rated NRC 1.00 or higher, like GIK's 3.5 in. FlexRange Acoustic Panel at NRC 1.05.

Soundproof foam panels work on echo, but not on noise through walls.

The best foam for soundproofing a room's echo is open-cell acoustic foam (polyurethane or melamine) that's sold with a lab-tested NRC.

The biggest disadvantage of acoustic panels is that they don't block noise.

Acoustic wall panels aren't outdated: a room with drywall, glass and hard floors echoes just like it always has, and panels are still the easiest fix.

The biggest downside of soundproofing is that every extra point of blocking costs more than the last: doubling a single wall's weight buys you only about 6 dB, and NRC Canada concludes "it is not economical to continually double the wall or floor thickness" (CBD-239).

Wood paneling makes poor soundproofing. 3/8 in. plywood weighs 1.0 to 1.2 lb/sq ft (Boise Cascade), about half of a layer of 5/8 in. drywall at 2.2 lb/sq ft (USG), and that full drywall layer only took an insulated 2x4 wall from STC 34 to 37 in USG lab tests.

Slat walls do absorb sound, but it's the felt and the space behind the slats doing the work, not the wood.

Yes, mass-loaded vinyl works for soundproofing when it's sealed into a wall or ceiling: a 1 lb/sq ft sheet rates STC 26 all on its own in Johns Manville's lab test.

The best mass-loaded vinyl for soundproofing is the heaviest sheet you can handle that comes with a published ASTM E90 lab test.

Yes, you can put MLV directly on drywall, as long as you screw it through the drywall into the studs, seal every seam and cover it with a fresh layer of 5/8 in. drywall.

Soundproof panels work on ceilings for echo, but not for noise from upstairs.

The cheapest way to soundproof a ceiling is to seal it: caulk the perimeter and close up the recessed lights, because one unsealed 1/8 in. gap 1 ft long dropped a partition from STC 46 to 36 in PABCO's Sound Design Guide.

You can soundproof an existing ceiling without tearing it out by sealing it and adding mass: caulk the perimeter, box in the recessed lights, and screw a second layer of 5/8 in. drywall (2.2 lb/sq ft, USG) through to the joists.

To soundproof your ceiling from noisy neighbors, hang a new ceiling that doesn't touch the joists: in Kinetics lab tests, putting the drywall on spring hangers took one floor from IIC 40 to 62 for footsteps.

The cheapest way to soundproof a wall is to seal its leaks with acoustical caulk and outlet putty pads, since one unsealed 1/8 in. gap 1 ft long drops a wall from STC 46 to 36 in PABCO's Sound Design Guide.

The cheapest way to soundproof a room is to seal the door: in NRC Canada tests, weatherstripping a solid-core door took it from STC 22 to as much as 30, close to the STC 34 of a typical insulated wall (Quirt, Canadian Acoustics).

The cheapest DIY soundproofing is sealing air leaks with acoustical caulk, outlet putty pads and door weatherstrip, and all of it goes on with a caulk gun and a utility knife.

The best cheap alternative to acoustic panels is a bare 2 x 4 ft board of 2 in. rigid fiberglass wrapped in breathable fabric: Owens Corning 703 rates NRC 1.00 on its data sheet.

Block noise from a shared wall by sealing its leaks first, since one unsealed 1/8 in. gap 1 ft long drops a wall from STC 46 to 36 in PABCO's Sound Design Guide.

To soundproof against loud neighbors, seal the gaps their noise comes through (the entry door, the outlets and the wall base), then add mass to the shared wall if you own it.

Soundproof panels work in apartments for echo, not for neighbor noise. A 2 in. fiberglass panel soaks up nearly all the mid-range sound that hits it (NRC 1.00 for Owens Corning 703), but it only weighs about 0.5 lb/sq ft (3.0 lb/cu ft x 2 / 12), and blocking takes weight.

Soundproof apartment walls by sealing the spots where sound leaks through them (outlet boxes, the gap at the wall base and pipe holes), then the entry door, using fixes that come out at move-out.

Soundproof a bedroom by sealing its gaps first (door, window, outlets and wall base), then adding mass or decoupling to whichever wall the noise is coming through.

Acoustic panels help with insulation only a little: a 2 in. fiberglass panel core is rated R-8.7, but two 2 x 4 ft panels on a 12 x 8 ft R-13 outside wall only cut the heat passing through that wall by about 7%.

Fiberglass and stone wool acoustic panels are fire resistant: unfaced Owens Corning 703 has an ASTM E84 flame spread index of 5 (data sheet), well inside the Class A range of 0 to 25, and Rockwool Safe'n'Sound stone wool scores 0 and is noncombustible (Rockwool data sheet).

Yes, acoustic panels are safe once they're up on the wall, and that includes fabric-wrapped fiberglass panels: the International Agency for Research on Cancer puts insulation glass wool and rock wool in Group 3, "not classifiable" as human carcinogens (IARC Monograph 81).

No, acoustic panels aren't waterproof: their cores are porous so sound can get in, and water gets in the same way.

Most acoustic wall panels are 1 to 2 inches thick, decorative felt panels run about 1/2 inch, and panels meant for bass are 4 inches or more.

Yes, acoustic panels absorb sound: a 2 in. fiberglass panel rated NRC 1.00 soaks up nearly all the mid-range sound that hits it, and 2 in. Auralex Studiofoam soaks up about three quarters (NRC 0.75).