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 Aurora, SD 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 May 25, 2025

Reviewed in May 2025
Absolutely horrible experience. The windows came in weeks after expected delivery date. They were 6 hours late to do install. Didn?t schedule for proper amount of crew required for our size bay window AND didn?t show up with correct trim size for framing window inside!!!! The bay window bench...
1-800-HANSONS (Sioux Falls Windows)
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Reviewed in June 2020
We needed an outdoor spigot replaced, as the pipe was leaking into our basement whenever we turned on the spigot. He was quick in coming over, did an excellent repair job, and when one of the newly installed pipes proved to be defective, quickly replaced the damaged pipe at his own expense. The...
JF Property & Building Maintenance Facebook
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Reviewed in December 2019
They came out in a timely manner to visit with us and show us the different guards. Once they were ordered, the gutter guards were put on quickly & the installers were very efficient. We were very pleased with their work.
Rykhus-Nelson Siding, Windows and Seamless Gutters, Inc.
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Reviewed in November 2016
 We installed new carpet in our house about 5 years ago. The carpet in the hallway, which gets a lot of traffic, was becoming quite dirty along with spots on the living room floor. We called Dennis Schepker to see if he would be able to...
Michaels Irrigation LLC
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Reviewed in June 2016
The salesman was excellent and the team that installed my gutters were quick and willing to do an extra job that is out of the norm. I would recommend this company to anyone needing some house work. They go the extra mile to ensure you are happy with their product.
Your Home Improvement Company
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Reviewed in June 2016
The company was very professional. We knew exactly what we were getting and were left with no questions after ordering and installment. The installment crew was wonderful and very great with my children running around!
Your Home Improvement Company, LLC
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Doorbell Installation questions, answered by experts

For your safety, you should always wear a mask when cutting batts of fiberglass insulation. We also recommend wearing eye protection, safety gloves, and long sleeves to protect your skin. Properly suiting up helps you avoid several fiberglass issues, such as cuts from the tiny shards of glass and inhaling small bits of fiberglass.

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.

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.

Depending on the item, several different materials are beneficial for long-term storage. Bubble wrap and plastic wrap help ensure delicate ceramics or furniture are safe and secure. High-quality moving boxes made of durable materials like plastic also help ensure the longevity of your storage, as cardboard will degrade faster over time.

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