Can Insulation Be Used For Soundproofing?
If you’ve ever tried to relax at home only to hear every car that drives by, the TV from the next room, or even footsteps from upstairs, you know how disruptive noise can be. Maybe you’ve tried rugs, curtains, or even sound machines, but the noise is still there. At some point, the question pops into your mind: Does insulation help with sound?
While no material will create total silence, the right insulation can dramatically reduce unwanted noise and make your home feel calmer and more private.

Does Insulation Help With Sound?
Insulation does more than keep your home warm in winter and cool in summer. It also absorbs sound waves, which keeps noise from moving so easily through walls, floors, and ceilings. Think of it like putting a cushion between you and the sound. It won’t block every noise, but it makes a huge difference in how much you actually hear. Noise dampening insulation is often one of the easiest and most effective upgrades for a quieter home.
Is Fiberglass Insulation Good for Soundproofing?
Fiberglass is widely used because it’s affordable, easy to install, and effective at absorbing sound. It can noticeably cut down on noise between rooms and even help with sound from outside. When used inside walls or between floors, fiberglass batts increase the sound transmission class (STC) rating of the structure. It may not block all sound on its own, but it’s a reliable option. Though it’s not the only option.
Which Insulation Materials Are Best for Sound Reduction?
When you’re searching for soundproof insulation for walls, you have a few options:
- Mineral Wool (Rock Wool) – Mineral wool is dense, fire-resistant, and excels at absorbing sound—making it ideal for walls, between floors, and ceilings.
- Fiberglass – Fiberglass is widely used, cost-effective, and offers solid acoustic performance. It notably improves a wall’s STC (sound transmission class) rating by about 5–10 points, especially in steel stud assemblies.
- Cellulose – This eco-friendly, dense option can provide good noise dampening, is often cheaper than fiberglass, and is treated for fire and mold resistance.
- Spray Foam (Especially Open-Cell) – Open-cell spray foam insulation expands into gaps and cavities, creating an airtight, sound-dampening layer which is great for attics, crawl spaces, and between floors. Closed-cell foam is denser, but less effective at absorbing sound.
- Combination Strategies – The best noise reduction comes from layering materials or combining mass (like dense insulation) and decoupling methods (like resilient channels). More mass and thickness generally equal better performance.
So, what type of insulation is best for soundproofing? The answer depends on your home and the kind of noise you’re dealing with. A professional can recommend the right solution for your walls, ceilings, or floors.
Where Noise Dampening Insulation Helps Most
If you’re serious about quieting your home, here’s where insulation makes the biggest difference:
- Interior Walls – Keep bedrooms, offices, and living spaces more private
- Between Floors – Reduces footsteps, voices, and everyday movement overhead
- Attics and Ceilings – Keeps outdoor noise or echoes from filtering through
- Basements – Turns noisy, echo-prone areas into a comfortable living space
Why Choose Westside Drywall & Insulation?
At Westside Drywall & Insulation, we don’t just install insulation. We focus on building smarter, energy-efficient homes that feel better to live in. Here’s what sets us apart:
- Noise Reduction + Energy Savings – Our team uses materials that dampen sound while also lowering energy bills.
- Trusted Expertise – With decades of experience, we know what type of insulation is best for soundproofing and comfort.
- Clean, Reliable Service – From drywall to insulation, we handle it all, leaving your home clean and ready to enjoy.
- Peace of Mind – Every project comes with a 1-year touch-up guarantee, because we stand behind our work long after installation.
So, Can Insulation Be Used For Soundproofing?
While “soundproofing” might be an exaggeration, insulation can go a long way toward noise reduction, especially when you choose the right materials and a skilled installer. With our energy-smart expertise and customer-first approach, you’ll enjoy quieter, more comfortable spaces with lasting value.
Make Your Home Quieter With Westside Drywall & Insulation
At Westside Drywall & Insulation, our experts in the Pacific Northwest can help you choose the best Insulation that does help with sound. With clean, reliable service and a 1-year touch-up guarantee, your home will feel quieter and more comfortable. Schedule your free estimate today and let our team make a lasting difference.