No — and don't trust anyone who promises that with foam alone. Acoustic foam absorbs sound inside the room (NRC 0.74 here, which is studio-grade). To block sound through a wall you need mass — mass-loaded vinyl, double drywall, or a Green Glue assembly. Use this foam to make your room sound better on mics and calls. Use mass to stop sound passing through.

NRC = Noise Reduction Coefficient, a 0–1 scale of how much sound a material absorbs. 0.74 means roughly 74% of mid-band sound is absorbed instead of bouncing back. Anything above 0.70 is considered studio-grade. Most painted drywall scores around 0.05.

STC (Sound Transmission Class) measures how much sound a material blocks from passing through a wall. STC 27 is what we measured on this foam alone — it's a useful number for spec sheets, but foam is bought for absorption (NRC), not transmission loss. If your goal is to stop sound passing through a wall, you need mass plus the foam, not the foam alone.

On smooth, painted drywall in good condition: usually no — the adhesive peels off cleanly with slow, steady pressure. On older paint, eggshell, wallpaper, or freshly painted walls (under 30 days): it may pull off paint or adhesive residue. If you're renting and worried, use mounting putty or removable Command strips on the back of each tile instead of the factory adhesive.

You don't need to cover every wall. For a podcast/streaming setup, 12–24 tiles around the mic position is usually enough. For a home office, 24–36 tiles on the wall behind you and the wall facing your mic. For a full music room, 48+ tiles spread across walls and ceiling corners. Want exact numbers? Use our Tiles Calculator — punch in your room and tile size and it tells you how many to order (with a 5–10% buffer for cuts and mistakes).

It ships vacuum-sealed to cut shipping cost and carbon. Unbox the tiles and let them sit 24–48 hours — they expand back to full 2″ / 5 cm thickness on their own. Don't install while compressed; the adhesive bonds best at full thickness.

Yes — it's treated to be fire-retardant (Class B equivalent in most regions). It resists ignition and self-extinguishes once a flame source is removed. It is not fireproof — no foam is — so don't install it next to open flame, halogen bulbs, or unvented heaters.

Peel-and-stick adhesive works best on smooth, clean, painted drywall. On textured paint, popcorn ceilings, brick, or stone, the contact area is too small for the adhesive to grip. Use construction adhesive or polyurethane spray adhesive instead — or pick our non-adhesive version and mount with spray adhesive.

10″ tiles (25 cm) are easier to lay out in patterns and around outlets / vents. 20″ tiles (50 cm) cover ground faster — one large tile = four small. Order the 12-pack for a single mic wall, the 24-pack for a small room, two 24-packs for a full room. Mix colors for a checkerboard look.

Yes, but use a backup. The factory adhesive holds on smooth ceilings short-term, but ceilings collect dust and gravity isn't on your side. For permanent ceiling install, add a few dabs of construction adhesive on the back of each tile, or use foam-safe spray adhesive. Hang during cooler hours — warm ceiling drywall reduces grip.

Handling time is 1–2 business days before the package leaves our warehouse. Standard shipping to the US and most countries lands in 7–14 days. Express shipping arrives in 7 days or less. Free worldwide shipping on orders over $99. No surprise import duties on US delivery — the price you see is the price you pay.

100-day returns from the day you receive it. If the foam doesn't solve your echo / room-sound problem, send it back for a refund. Tiles must be in resaleable condition (don't glue them up if you might return them — do a small listening test first).