Can I use fiberglass insulation to soundproof a room?

• <div><p>We do not recommend fiberglass insulation for soundproofing purposes, especially if you are working on a room that’s part of your living space. <a href="https://www.angi.com/articles/diy-dangers-fiberglass-insulation-hazards.htm">Fiberglass insulation is dangerous</a>, and the installation process is hazardous. It is also harmful to the environment. When there are so many newer, healthier non-fiberglass alternatives in the market, the lower cost of fiberglass insulation simply doesn’t justify the harm and danger it poses.</p></div>

Should I remove old attic insulation before adding new?

• <div><p>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: </p><ul><li><p>If the insulation is over 15 years old</p></li><li><p>If the insulation is wet or moldy</p></li><li><p>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></p></li><li><p>If you see signs of pest infestation</p></li></ul><p>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</p></div>

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Verified Reviews for Doorbell Installation pros in Devon, PA

*The Angi rating for Doorbell Installation companies in Devon, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Doorbell Installation needs.

*The HomeAdvisor rating for Doorbell Installation companies in Devon, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Doorbell Installation needs.

Last update on July 14, 2026

Reviewed in July 2026
The whole experience was very good.The door was good quality and the installers were professional.
Graboyes Window & Door
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Reviewed in June 2025
Juan did a great job with mounting a large number of blinds in some challenging window openings that I had been struggling with. He is also a very nice guy, and I will be using his services again (likely for doorbell camera systems in the near future). I would highly recommend him.
JCS Low Voltage LLC
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Reviewed in June 2025
Did a great job installing a video doorbell. Was on time and was able to quickly sort out the situation. Would definitely hire again.
J and J Audio and Visual Installation
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Reviewed in September 2023
Bruce removed an old front entrance storm door and installed a new one. He was there on the job on time, did great work and his cost was very reasonable.
Stellfox Carpentry
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Reviewed in August 2023
Professional installers, friendly, courteous. Customer service available and responsive
Surf & Turf Construction, LLC
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Reviewed in February 2023
Installers were great and my project manager John was on site the entire job making sure everything went smoothly.
Home Genius Exteriors
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Reviewed in January 2023
Great prompt service for installation of electric range.
RAS Electric
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Reviewed in June 2022
I hired DiGregorio Electric for a large recessed lighting installation project. They quickly gave a fair quote, were able to rapidly schedule installation, and did an absolutely fantastic job on the project. I look forward to working with them again in the future.
DiGregorio Electric
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Reviewed in November 2021
We love our new garage door. It was installed quickly and for a great price.
Leon Garage Doors
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Reviewed in July 2021
Install went very well. The two men were professional and helpful.
Advanced Drains and Plumbing Repairs, LLC
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Doorbell Installation questions, answered by experts

We do not recommend fiberglass insulation for soundproofing purposes, especially if you are working on a room that’s part of your living space. Fiberglass insulation is dangerous, and the installation process is hazardous. It is also harmful to the environment. When there are so many newer, healthier non-fiberglass alternatives in the market, the lower cost of fiberglass insulation simply doesn’t justify the harm and danger it poses.

Ensures uniform application and maximizes insulation effectiveness and energy savings.

Insulation can be easy to install, depending on the condition of your walls, but there are many safety considerations and potential challenges involved. For example, most types of insulation are made from materials that can cause irritation if inhaled or if they come into contact with your skin. Additionally, installing insulation incorrectly can actually make moisture issues in your home worse.

Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation:

If the insulation is over 15 years old
If the insulation is wet or moldy
If it is vermiculite insulation
If you see signs of pest infestation

Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

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