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 Carmi, IL

*The Angi rating for Doorbell Installation companies in Carmi, IL 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 Carmi, IL 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 June 11, 2026

Reviewed in June 2026
We have had the best experience with Kitchens & Baths by Sho-Pro of Indiana. Joe came out to the house, told us the details of their product and went through what our options would be. He took care to listen to our needs and concerns. From materials to colors we were confident our...
Sho-Pro of Indiana, Inc.
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Reviewed in January 2025
Our sales respresentative was very personable and knowledgeable about the products that Window Shopping offers. We did not feel any pressure to make a purchase. The quality of the windows sold themselves. Our installers were professional and did an excellent job installing all of our windows....
Window Shopping
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Reviewed in April 2023
I used this company for repairs and installation. They were very professional my floors remained clean they threw all trash away a cleaned up. And most importantly they returned my call promptly and completed my work in a very timely manner. The work that was done was excellent and they cleaned...
Shutt's Heating And Cooling LLC
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Reviewed in June 2022
We had a ceiling fan light combo installed in our living room. The staff was super friendly and helpful. They were there to answer any questions as well as address any concerns I had. Job was performed in a timely, cost effective manner as well as the quality of his work. Iâ ll definitely use...
Ghost Electric, LLC
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Reviewed in November 2015
They installed a drip irrigation system around the entire foundation and installed a new controller to separately manage the drip system from the sprinkler system. They dug the trench, installed the line and controller, tested the system and then filled in the trench. I really enjoy doing...
DFW Eagle Foundation Repair Inc
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Reviewed in August 2015
when I called,the woman indicated they could not do a "repair on a gutter they had not installed, but they would gladly quote a complete replacement. Not a good approach.....
GutterMaxx, LP Dallas
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Reviewed in July 2013
Mr. Crochet completed the dormer repair and I am very satisfied with his work and work ethic. Watching how the repairs were done and his statement is that "this is what I would do in my own home" has given us confidence with his ability. We contracted with Mr. Crochet with a kitchen and bathroom...
Dimmett's Home Repair Service
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Reviewed in June 2013
The estimate person and the installers were very professional, polite and concerned about our needs and wants on the new roof. Installation was done quickly and the results are perfect. Could not have asked for a better job.
Graber Post Buildings Inc
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Doorbell Installation questions, answered by experts

When it comes to fiberglass insulation versus foam board, there are a few notable differences, both aesthetically and functionally. Fiberglass insulation is soft and flexible, meaning it can be squeezed into tight spaces more easily than foam board. Fiberglass insulation also has a higher R-value, making it a better pick for colder climates. However, foam board insulation can resist moisture and pest damage much better than fiberglass.

Cellular shades, also known as honeycomb shades, are the most energy-efficient and insulating window treatments. Their honeycomb structure is made of soft fabric that forms layered cell pockets. These pockets trap air, creating a thermal barrier that reduces heat loss in the winter and blocks heat gain in the summer. For even greater insulation, consider double- or triple-cell varieties. Side-tracked cellular shades, which seal the edges of the window frame, can further minimize air leaks and maximize energy efficiency.

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.

Insulation is professionally installed by measuring spaces, cutting materials to fit correctly, and placing them without gaps for optimal thermal resistance.

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

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