Soundproofing Insulation: How To Install Panels & Test Them

Soundproofing insulation is one of the best ways to reduce noise from the outside or other oom because the insulation sandwich between walls will easily capture sound waves before they even reach your ears. While putting up insulation requires significantly more work than just hanging a soundproof panel or installing a curtain, this is the perfect material if you’re going to open up your wall anyway, or if you need a major reduction in noise because this is one of the best and most complete ways to soundproof a room or even your whole house.

Picking the Right Material

Before getting started, you have to make sure you pick the right material for your needs. There are dozens of choices, but we will go through the most popular. Mineral wool is extremely popular, and there are two types to choose from: high-performance and multipurpose. High-performance is best for interior walls and if you only need soundproofing because this is best at reducing noise. Multipurpose can be used for interior and exterior walls, and while it’s not quite as good at soundproofing, it also adds thermal insulation.

Fiberglass has many of the same properly as mineral wool, but it’s significantly more expensive. At the same time, it gives you soundproofing like high-performance mineral wool with the added benefit of thermal insulation. Cotton insulation is affordable and provides both warmth and soundproofing, but it’s best for small projects.

Removing and Cutting

Removing insulation from its package is easy, but one small mistake can drastically reduce its effectiveness. When opening the package, be sure not to cut or pierce the insulation at all, just cut the packaging and then allow the insulation to reach its full volume.

When cutting the insulation to fit your specific spaces, be sure to measure twice and cut once. Secure the insulation against a sturdy backstop and make it about an inch wider than the space to ensure it properly fits. Cut on the unfaced side of the batt and only use very sharp knives as to avoid ripping or tearing.

Pushing Into Place

With the insulation properly measured and cut, push it into the wall cavity. Allow the soundproofing insulation a second or two to fill in the space. Be sure to adjust the material as needed to make sure it fits snugly. Most pieces will have to be jostled a little to get it in just right.

Stapling or Friction

Friction is often the best way to ensure insulation stays in place, but some builder codes in certain states require you to staple the insulation. If you must, don’t stretch the face too much as this can warp the insulation over time. Do your best to avoid puckers or gap as these will drastically reduce the insulation’s effectiveness.

After this point, just put up the rest of the wall as needed and you’ll be all finished.


Soundproof insulation is a great way to reduce noise all over your living space. Not only is it affordable and fairly easy to put up, but you’ll finally get that peace and quiet you always wanted. Just be sure to choice the best material first, and then commit to a safe and smart installation to ensure the best effectiveness.