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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Last update on September 22, 2025

Reviewed in September 2025
The job was very well done and I received an excellent result. The entire process was professional from estimate to completion. Floors were completely demoed to the floor joists and the source of the damage was revealed and corrected with the installation of a French drain. I was kept informed...
Service Group as a Service - General Construction
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Reviewed in July 2022
Installed backsplash in three bathrooms and a laundry room. Was prompt, and started and completed the job in the same day. I was very satisfied with the quality and professional of the installers. An extremely reputable company!
702 Flooring and More
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Reviewed in October 2020
Took a long time to find the right business for this job. Had met with several contractor/ tile guys for a bathroom remodel. This was a marble tile install with converted bathtub to shower remodel. John was extremely professional and thoughtful in his approach to the project and In his...
AJ Tiles, LLC
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Reviewed in May 2020
I had them come out to install a system as part of a real-estate transaction. It has now been 2 weeks since the system has been installed and i still have not recieved any paperwork from them. I have tried calling atleast a dozen times with no call back. I have had to postpone the closing on my...
Affordable Radon Services
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Reviewed in October 2019
Friendly and professional installer and customer service representative. Had a very nice experience.
Precision Door Service of Memphis
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Top-Rated Doorbell installation pros in Wesson - Updated Nov 2026

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Doorbell Installation FAQs, answered by experts

Yes, including recycled denim and cellulose from natural fibers.

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

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.

Improves water efficiency, reduces oversight, and enhances landscape health.

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.

The Wesson, MS homeowners’ guide to doorbell installation services

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