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>

Should wall insulation be faced or unfaced?

• <div><p>Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.</p><p>Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.</p></div>

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

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Last update on December 21, 2025

Reviewed in December 2025
Helped me install two Ring cameras to my house. My main complaints are that the doorbell camera was installed tilted and my gutter was dented by their ladder.
Burglar Busters
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Reviewed in February 2025
Jonathan recently installed a central A/C in my home, and I couldn't be happier! The installation was quick, professional, and hassle-free. Highly recommend his services!
General Precision HVAC & Heating
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Reviewed in December 2024
Joel was amazing with the installation of my computer and installations of the wiring for my home
JMZ Solutions LLC
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Reviewed in October 2024
Mark Vieto -Repaired the doorbell, changed a ceiling light and installed a new dimmer. His work is first rate. He explains what needs to be done and came to do the repairs. We recommend Mark for any electrical work.
Vieto & Son, LLC
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Reviewed in July 2022
TO OFTEN PEOPLE ARE TOO QUICK TO COMPLAIN AND NOT TO PRAISE. WHAT CAN I SAY ABOUT MAJOR HOMES EXCEPT THAT THEIR WORK WAS GREAT, QUICK AND EFFICIENT, AND EXTREMELY NEAT. ANTHONY TOLD ME THE JOB WOULD TAKE ABOUT FOUR HOURS AND THAT’S EXCACTLY WHAT IT TOOK. ANTONY, THE PROJECT MANAGER WAS VERY...
Major Homes Corp
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Reviewed in May 2022
Nice people courteous, arrived in time to do the work, very organized. I recommend if you have project tiles installed i recommend S & P TILES INSTALLATION,LLC to do the installation. Fantastic job and very professional.
S&P Tile Installation, LLC
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Reviewed in February 2022
Excellent carpet installation and attention to detail. James installed a runner for our stairs and created 3 matching rugs for our entrances. Awesome work.
James S Gerdvil, LLC
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Reviewed in September 2021
Christian did an amazing job in my apartment. He installed a hard wired google doorbell, cable/internet communication box and wired those cable through the wall so theyâ re not visible. Also he installed HDMI in wall points with ports and relocated a few outlets that were previously installed...
Dalessa Construction LLC
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Reviewed in July 2020
Not only were they on time, but they knew exactly what needed to be done. Got the installation of my Ring Doorbell done quickly & neatly. Thank you, Everything Home!
Everything Home, Inc.
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Reviewed in November 2019
Jeff and his son were very polite and friendly and professional. Our appointment was for 3 pm and the doorbell rang at 3 pm. They were fantastic.
Jeffs Electric Inc
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Doorbell Installation questions, answered by experts

One of the clearest signs that your insulation isn’t working as well as it should be is a noticeable difference in temperature throughout your home. One room might feel icy while another is hot as Arizona—this indicates that some parts of your home are either retaining or losing heat more than others. Additionally, a sudden increase in your energy bills, evidence of pests or rodents, or evident water damage are other signals that warrant a thorough inspection of your insulation and potential replacement.

While not every wall requires a vapor barrier, if you do need one and don’t install it, moisture can get between the walls of your home. This can lead to water damage from mold growth or rot, and the excess moisture could also attract pests, including termites, cockroaches, or ants.

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.

Installing insulation helps reduce energy usage, improve home comfort, and lower utility bills by maintaining stable indoor temperatures year-round.

Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.

Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.

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