Acoustic foam is essential for soundproofing and noise reduction, but over time, it can collect dust, dirt, and odors. Many wonder if washing it is safe or if it will damage the material. The answer depends on the foam type and cleaning method used.

Can You Wash Acoustic Foam?

Most open-cell acoustic foam (like polyurethane or melamine foam) should not be machine-washed or soaked, as water can break down the material and reduce its sound-absorbing properties. However, light cleaning methods can help maintain it without damage.

Safe Cleaning Methods for Acoustic Foam

1. Vacuuming (Best for Dust Removal)

• Use a soft brush attachment to gently remove dust.
• Avoid high suction, which can tear the foam.

2. Spot Cleaning (For Stains & Odors)

• Mix mild soap (dish soap) with warm water.
• Dampen a soft cloth or sponge (do not soak the foam).
• Gently blot stains—never scrub harshly.
• Let air dry completely before reusing.

3. Disinfecting (For Germs & Odors)

• Use a 50/50 mix of water and isopropyl alcohol in a spray bottle.
• Lightly mist the foam and let it air dry.
• Avoid bleach or harsh chemicals.

What NOT to Do When Cleaning Acoustic Foam

❌ Do not machine wash or submerge in water – It can deform or disintegrate.
❌ Avoid harsh scrubbing – This can tear the foam cells.
❌ Never use strong detergents or bleach – They can degrade the foam.

Alternative: Replace Heavily Soiled Foam

If foam is moldy, heavily stained, or crumbling, replacement is better than deep cleaning.

Conclusion

While you can’t wash acoustic foam like fabric, gentle vacuuming, spot cleaning, and disinfecting can keep it fresh. Always air dry completely before reinstalling to prevent damage. Proper care extends its lifespan and maintains sound absorption quality.