Should I remove old attic insulation before adding new?

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

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*The Angi rating for Doorbell Installation companies in Dover, VT 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 August 02, 2025

Reviewed in August 2025
We hired Josh / Osborne Excavating to install a driveway for our cabin in Snow Mountain Farms. I can't say how happy we are that we decided to use him! He was courteous, prompt,through and did a great job. He also c kept us informed about a delay that arose. What more can I say? Use this guy,...
Osborne Excavating & Property Maintenance, LLC
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Reviewed in April 2025
Tanner Bell was professional from start to finish. He came and inspected out the job, ordered the parts, installed and delivered on time. Have had no problems and been pleased with the results.
TAB BUILDERS LLC
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Reviewed in January 2024
I hired DCS to renovate a house for my mother. They had to re-frame walls, move doorways, gut reno 2 bathrooms and the kitchen. They finished the drywall, installed the new tile and cabinets, replaced flooring, and installed a new tile fireplace surround and built a custom wood mantle. Great...
DCS Custom Builder, LLC
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Reviewed in November 2023
Brian built a addition consisting of a garage with and finished upstairs. I would say that the end result is amazing and Brian has always responded to me when I needed him. We moved into the area and we bought a farm with many challenges over the first few years and Brian and his crew were...
Betit Property Service, LLC
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Reviewed in May 2023
Norman's not just a skilled professional - he's an actual craftsman! Replaced the knob and deadbolt on my front door, which was a tricky job, as the door was very old and actually starting to disintegrate. Previous guy I had in refused to touch it, and told me to buy a new door, but Norman...
Norman Calkins
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Reviewed in November 2021
installing not quite finished but was not held up by Berard Electric. Was always here when he said he would be.
Berard Electric
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Reviewed in November 2021
Patrick was great to work with. He provided us with a quote quickly, ordered our parts, and was quick to arrive and install a switch for our portable generator. He is professional, tidy, and a joy to work with. We will definitely have him back!
Patrick Regan Electric
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Reviewed in September 2021
I have had a freedom fence in my yard for over 15 years installed by Hal Kessler. It is by far the most durable product I have ever installed. It has been through 2 large doge and has always worked beautifully.. Hal has been there with me throughout and has been very responsive to everything...
Freedom Fence
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Reviewed in April 2021
Very positive,they were installing an online automatic Generator, 22 Volts. Efficient, coordinated connection with the propane company. They also had to add a new panel as the old one was really old...Adding a surge detector to the AC system. They were neat and orderly
PowerHouse Home Service, LLC
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Reviewed in December 2020
Andrew and Michael installed a trampoline for my 2 kids. Great work!!!! On time and got the job done in good time.
Nailit Handyman
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Doorbell Installation questions, answered by experts

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.

Yes, you can use too much bubble wrap. If you overdo it with the wrapping, it can strain the top of your box and break open the taped seal, risking the chance that the contents of the box could fall out or break. Use enough wrapping to fully cover your item without compromising the security of your box.

Yes, they address underlying issues, providing long-term seals and energy savings you might need help to achieve.

Experts use advanced techniques and tools to assess existing insulation levels and identify gaps. They implement strategic placement of new insulation to ensure complete coverage, optimizing thermal resistance and energy efficiency.

Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you’ll need to do down the line.

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