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 Hatton, ND 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 July 12, 2025

Reviewed in July 2025
Very professional all around! My house has never been cleaner! Very hard workers! I would recommend using this cleaning service! They have very affordable rates!
Mary's Cleaning
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Reviewed in August 2023
Very thorough work. He showed up to do a quote the same day I called and was here to do the work 2 days later. House was clean when the project was done and he even took the time to clean the driveway. Very impressed, would definitely have them do some more work in the future.
Skilled Craft Remodeling and Design LLC
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Reviewed in October 2022
I live out of state and was able to call the Hermoso brothers to help my grandma who lives in Escondido. She called me saying her sink did not work and was backed up. I called Eric and he was able to fit her in that day. As a grandson I am extremely grateful for the kindness shown, and as a...
Mighty Plumbers
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Reviewed in February 2022
Great. On time. High quality. Intuitive thinker
K2 Building
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Reviewed in October 2021
Upbuilders did a great job on my deck repair project. They came to get me an estimate promptly, they did their job a week earlier than they said, the repair work is great and they cleaned up the job quickly! I can highly recommend Nephi and his crew!!! It doesn't pay to higher the guy that can...
UpBuilders, LLC
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Reviewed in August 2021
workmanship super, but quite a bit overpriced
Your Home Improvement Company, LLC
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Reviewed in January 2021
Lee was, prompt, professional, and fairly priced. Would hire again, and highly recommended.
Clean Air Solutions, Inc.
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Reviewed in August 2020
Eddie did an amazing repair on a customer s drywall that was damaged by our hand truck. You would never know there was damage now. He did a proper repair, matched the paint, and made it simple. Not only did he take care of us he pleased our customer which helped us save the business. All at a...
ECM CEILINGS & WALLS LLC
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Reviewed in July 2019
Did a ceiling fan nice job
North Star Electric
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Reviewed in February 2013
It was great! They did an excellent job of installing the windows, and we have no complaints with the work whatsoever.
Windows Plus
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Doorbell Installation questions, answered by experts

Yes, including recycled denim and cellulose from natural fibers.

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.

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.

Spreading tin foil over your windows works similarly to radiant barrier insulation, but not as well. It will reflect some of the sunlight that would otherwise come through the glass and warm up the inside of your home, so it might help a little to keep your home cool in the summer. However, the appearance isn’t preferable to blinds or drapes that can offer the same benefits. You might also consider tinting your windows instead, which is a more aesthetically pleasing change that can still block a good portion of the solar heat coming through your windows.

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