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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Verified Reviews for Doorbell Installation pros in Dickinson, ND

*The Angi rating for Doorbell Installation companies in Dickinson, ND 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 Dickinson, ND 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 May 22, 2025

Reviewed in May 2025
They were extremely polite and prompt
Green Machine Pest Control
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Reviewed in May 2024
I had an exciting sales experience with Craig and James they were both extremely professional. They did a great job explaining their process. Tim the installer was amazing! His workmanship and eye for detail was outstanding talk about a man that is focused and dedicated to his craft! Highly...
Your Home Improvement Company, LLC
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Reviewed in March 2023
Martyniuk remodeling does a fantastic job! Highly recommended. Did my tile, my carpets and installed my deck. Phenomenal work!
Martyniuk Remodeling
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Reviewed in December 2021
Jason answered my phone call right away, set up a time to meet within a few days, scheduled to install the linoleum shortly after, and installed it in a very timely manner to complete the project!! He is very friendly and kind to work with! We highly recommend Jason Golden. He does good work!
The Golden Handyman, LLC
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Reviewed in July 2021
The work done was of a great quality. Even with a couple interesting twists when getting to installation of the new windows, the installers did a really nice job. The follow up after the installation was a good touch, making sure that it was done to our satisfaction and specifications.
Your Home Improvement Company, LLC
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Reviewed in February 2021
Very professional and easy to work with. They were knowledgeable and helpful with questions and did a tremendous job on the install.
Hellman & Sons Landscaping, LLC
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Reviewed in November 2020
Very satisfied with his work. He installed an insulated double door, put in a new window for me, and did electrical work in my chicken coop. Everything has been working great since he installed them over a year ago ?? Would definitely recommend Alpha Electric!
Alpha Electric
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Reviewed in May 2010
They came out and gave me an estimate for the gutters. Once I decided to use them I gave them a deposit and they were here later that same week to put up the new gutters. I do wish they had called before they came out instead of calling me at work once they were already here. Still everything...
Simon's Homes
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Reviewed in February 2007
PB&J did a magnifacent job in installing two shelves in my laundry room. They were very cooperative in meeting my limited schedule. I will most definitely rehire PB&J for later projects.
PB & J Remodeling
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Doorbell Installation questions, answered by experts

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.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

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.

Acoustic foam, fiberglass insulation, soundproof curtains, and specialized drywall are effective in reducing noise transmission.

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.

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