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What to Consider Before Choosing to Install Sound-Proof Insulation

What to Consider Before Choosing to Install Sound-Proof Insulation

Peace and quiet seem like simple goals. But with many people under one roof, it can seem unattainable. Having a quiet space promotes relaxation, creativity, and productivity and makes it easier to focus

That's why many homeowners are turning to sound-proof insulation to minimize sound transfer through walls and finally get some peace and quiet. But there are a few things you should know about sound-proof insulation before choosing to install it. 

How Does Insulation Impact Sound? 

Just like insulation absorbs heat and energy, it also absorbs sound. By absorbing sound, the insulation stops its movement and keeps the sound contained within its originating room. The thicker and more airtight insulation is, the more sound it absorbs. 

3 Things to Consider Before Choosing to Install Sound-Proof Insulation

When sound-proofing your home, not just any insulation will get the job done. That's why it's important to keep these three things in mind. 

1. NRC and STC Value 

The Noise Reduction Coefficient (NRC) measures the insulation's ability to absorb sound. This value can range from 0.0 to 1.0, with higher numbers being more desirable. 

This shouldn't be confused with the Sound Transmission Class (STC), although they are both important measurements. The STC measures how much sound any given insulation material blocks, not how much sound it absorbs. STC ratings range from 25 to 55, with higher numbers being more desirable for sound-proofing.   

2. Potential Allergens 

The insulation used during sound-proofing is generally safe for your health. However, some materials can irritate allergies. 

The last thing you want to do is invest heavily in insulation that you or someone in your family is allergic to. That's why it's important to know your triggers before you start shopping to prevent lining your home with a potential irritant. 

3. Eco-Friendliness 

Different types of insulation are made from different materials. As such, not all insulation materials are eco-friendly. If eco-friendliness and sustainability are priorities for you, make sure you know where your insulation comes from and how it's made. Luckily, there are many eco-friendly options available today. 

Which Type of Insulation Is Best for Sound-Proofing?

Although there are several types of insulation to choose from, two stand out from the rest when it comes to sound-proofing. 

Fiberglass Insulation 

Fiberglass insulation is a popular choice for sound-proofing because it's economical, eco-friendly, and versatile. Fiberglass insulation uses up to 30% recycled materials and comes in a few different configurations, including batts, rolls, and loose-fill. 

It is easy to achieve a gap-free finish with fiberglass insulation, and it carries an impressive NRC value of 0.95. However, this type of insulation may irritate very sensitive allergies. 

Blown-In Cellulose Insulation 

Blown-in cellulose is super eco-friendly and is made from up to 85% recycled materials. This type of insulation is made from shredded paper products and is affordable on most budgets. 

Blown-in cellulose has a slightly lower NRC score of 0.80, but it is still generally considered one of the best options for sound-proofing rooms. 

Should You Call a Professional to Install Insulation? 

Whether you're renovating your home or building a new custom home from scratch, installing sound-proof insulation can be tricky. The job is made even trickier if you don't have the right equipment or protective gear. Additionally, your first choice of insulation might not actually be the best option for your home. 

That's why it's generally recommended to call in a professional insulation contractor for any insulation installation. This ensures the job is done right the first time around and eliminates the potential safety risks to you. 


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