Soundproofing With Sound Insulation

Sound Proofing


Many sound reduction options exist, and each have their strengths and weaknesses.

In many settings, people prioritize space and looks. This is why home and business owners often utilize the empty space inside of walls, floors, and ceilings for soundproofing. Certain soundproofing contractors can install sound insulation into walls without removing the the drywall.

Soundproofing Challenges

The two main challenges with sound dampening are coverage and sound bridging.

Coverage: Sound reduction doesn’t work well without covering all nearby critical surfaces. This means covering just the walls with soundproof panels will only reduce sound a little. Sound control works best with full coverage -gaps quickly diminish the overall sound barrier quality.

Sound Bridging: Common building materials like drywall and lumber resonate and pass along sound, particularly lower-pitched sounds like bass or footsteps. These types of vibrations often prove difficult to dampen.

The Soundproof


If you’re interested in soundproofing services, below is our typical process:
  1. Initial on-site inspection and price estimate
  2. Confirm and schedule project
  3. Home owner prepares target area
  4. Team arrives to complete soundrpoofing project

Please note – This process can be incredibly dusty, and our team will contain the particles as much as possible. However, additional cleanup by the homeowner is typically required after airborne dust settles.

Know YOUR Numbers

Planning with general numbers often leads to inaccurate estimations and budgets. That’s one of the many reasons we offer free estimates. Whether you need a quick fix or are planning for work next year, work with actual numbers specific to you. 

In-Wall Sound Proofing Options

Can or will the drywall be removed in the area you’d like to soundproof? If the answer is no or preferably not, check out Soundproofing Without Removing Drywall below.

Cellulose insulation is an excellent sound reducer. It also can be injected into each wall / ceiling / floor cavity through a tennis ball sized hole (every 18″ – 24″). Hole are plugged after to allow for easy patching and repainting – rather than full wall replacement.

If the drywall can or will be removed, such as during construction or a renovation, the use of closed cell foam is possible (though cellulose may be a more effective option).

If you are concerned about particularly loud noises such as a workshop, heavy bass, or loud footsteps, it may be worth considering closed cell foam or cellulose with foam in critical locations (both detailed below).

Either way, we are more than happy to answer any questions you have about which product and process is best for you.

Best Soundproofing Approach

is Highly Situational

Soundproof panels can be purchased and installed by the homeowner. However, covering enough area to functionally reduce sound often costs nearly as much as hiring a contractor. It’s probably worth considering your objective and getting a free estimate for budgeting. 

Soundproofing Walls


An understandably common homeowner question is how to soundproof a wall that’s already built without requiring major renovations like replacing drywall.

The process involves blowing natural shredded cellulose insulation into each wall cavity.

Soundproofing Walls Without Removing Drywall & Soundproofing Interior Walls

When soundproofing walls without removing drywall, we use a method called dense pack cellulose. Technicians inject cellulose through tennis ball sized holes into each wall cavity rather than pulling off entire sheets of wall. This way, the drywall can be patched and re-painted rather than requiring a complete replacement–a huge difference in cost and mess.

This process works with blown-in insulation like cellulose, but unfortunately soundproofing spray foam for existing walls doesn’t work. Spray foam requires open wall cavities and “flooding” a wall cavity will cause it to rip the drywall right off the framing as the foam expands. This same type of foam is actually used to lift concrete!


In-Wall Sound Dampening Materials


Efficient and Effective

This versatile building material primarily known for its exceptional and cost effective insulation capacity. However, the material’s ability to absorb vibrations allows it to double as an equally impressive sound dampener.

Contractors with the right equipment are able to install it into open wall cavities during construction projects or into existing walls without removing the drywall. A nice final touch to cellulose is that it also resists fire and repels insects and rodents.

Spray Foam

Stops Sound Bridging

nother highly insulative material, closed cell foam reduces sound by blocking air and reducing the total sound that can pass through drywall, lumber, and other rigid materials. Rather than absorbing sound, foam blocks and prevents it.

This difference means foam does well in reducing impact-based sounds, like footsteps or heavy base. While these types of sounds are inherently difficult to dampen, foam or a combination of foam and cellulose can have a big impact.

Reduce Mold

Health & Safety First

Mold requires 4 things to grow: air, moisture, warmth, and food. The use of polyurethane as insulation eliminates condensation on surfaces to reduce or fully eliminate moisture accumulation. This kills existing mold and prevents future growth by indefinitely cutting off a lifeline.

Closed-cell foam is so good in high-moisture areas that it’s approved by FEMA for use in flood regions.

Lasting Application

A Permanent Solution

Good insulation contractors will conform foam to the specific requirement of your building. It doesn’t sag or collapse over time, and doesn’t have seams for air and heat to slip through. 

Spray foam is a permanent and custom-fit solution every time.

Reduce Pests

Extra Rodent Control

The best insulation contractors use equipment that allows for highly expanding foam. This means tiny passageways that mice and pests use for access into the building get blocked off.

Rodents rarely manage to burrow through closed cell foam, making this a lasting solution to rodent and pest issues.