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 Bradenton, FL 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 March 19, 2025

Reviewed in March 2025
Great quality on the installation, the tile installer communicated effectively and addressed my concerns or questions promptly plus the job was completed within the agreed-upon timeframe
Elevate Home Solutions
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Reviewed in March 2025
All of the Sunview Rescreen team from the office to the estimates to the installers were very friendly and professional. They created and installed a front entryway enclosure, installed a privacy/sunblocking screen on the lanai and repaired screens on the pool cage.
Sunview Rescreen
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Reviewed in October 2024
Great price, short time between order and installation, arrived on time and installer did an excellent job. Installer also took time to explain features and web app for remote system management.
Affordable Solar & Pool Heating, LLC
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Reviewed in November 2023
Quick and efficient pool heater evaluation and replacement. Quality equipment and professional installation . Did not let rainy weather slow down the installation.
Platinum Pools SRQ
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Reviewed in May 2023
Larry and Lisa of Nu_Vue Flooring did a fantastic job installing our new floors. This is the second time we've had Larry install floors for us. They start on time and are very meticulous with their work. We're going to have more floors installed and will not hesitate to have Larry and Lisa...
NU VUE FLOORING
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Reviewed in April 2023
I recently had this central air conditioning installation service install a new system in my home and I am so happy with the results! Their team was very knowledgeable and professional, and they were able to complete the installation quickly and efficiently. I would definitely recommend them to...
HVAC Florida
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Reviewed in April 2023
The installation crew just completed the work. Very professional installations, done perfectly. I am very satisfied with work. They cleaned up and let the outside spotless.
The Brothers That Just Do Gutters
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Reviewed in January 2023
Don Busse -owner came out and gave me an estimate on installing a mini split a/c, heat pump system for my lanai. He explained all the details of the installation gave me a installation date and performed the installation as purposed. Very impressed with his services and would highly recommend...
Florida Air Comfort Services
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Reviewed in February 2022
Koala Installation is terrific, excellent service, very responsive and easy to work with. They were meticulous during the installation process.
Koala Insulation of Coastal Carolina
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Reviewed in April 2021
Outstanding. The installers Joshua and Jake were great installers, neat, clean and professional. My installation went smoothly and the end result was fantastic. Really pleased with a job well done.
West Shore Home Atlanta
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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.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation.

Yes, including recycled denim and cellulose from natural fibers.

Mineral wool has an excellent life expectancy of up to 50 years, provided it's kept dry and free of pests. Compared to fiberglass, with a life span of 20 to 30 years, mineral wool stacks up well for long-term cost savings. Sheep wool maintains a similar life span to fiberglass, while estimates for hemp wool insulation life expectancies are all over the board, ranging anywhere from 20 to 100 years.

They recommend sustainable materials and water-saving fixtures, tailoring choices to balance sustainability and style.

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