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 Oregon, OH

*The Angi rating for Doorbell Installation companies in Oregon, OH 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 Oregon, OH 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 May 12, 2026

Reviewed in May 2026
I can’t say enough about the installer Todd , very professional and did a great job. I rate him a A+ . Thanks Todd for all your hard work , and a superior quality job 👍🏻 Randy -Oregon OH
Target HVAC
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Reviewed in November 2025
They did a perfect job on my install! Their craftsmanship far exceeded even the highest of my expectations. Not easy finding good work. Bravo!!
Hometown Networks LLC
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Reviewed in January 2025
I cannot say enough great things about this company, the ease of making the appointment, the salesman was very knowledgeable and offered many options and the follow up was very timely. The install turned out beautifully and extremely happy with the end result! Thank you! I can let out my dogs...
Superior Fence & Rail of Greater Toledo
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Reviewed in October 2024
The process was easy to schedule & finance, had to wait a little while to get all the pieces to schedule the job but seeing the pieces were all custom made it was expected. Installers Eric & Bob did a nice job working with us during the installation process including a few modification...
Premier Home Pros, LLC
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Reviewed in March 2024
Best company around. The owner Ryan is a friendly, honest, kind, genuine person. He makes your concerns his. He was always up to par when I had questions and was always there to answer them. The installers were all wonderful. They went over everything with me as to what they were going to do,...
The Energy Savers Roofs Plus More
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Reviewed in January 2024
He was extremely prompt in his reply and getting out to my home to install my stove awning. He was extremely professional, polite and was very quick with the project. I will definitely being using his services again with my future projects.
CT handyman services
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Reviewed in December 2023
He was initially hired for both fence installation and repair. His work was meticulous. We then hired him for another small project. He is kind and professional. Will hire again.
Jeremy's Handyman Service
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Reviewed in July 2023
Had (2) storm doors installed - service was very good. He was very informative on what he was doing or any extras he had to do. Excellent work and would recommend Darryl for your services.
Darryl's Handyman Service
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Reviewed in September 2022
Knowledgeable and experienced. Dan did a great job, was efficient and friendly. He was able to correct the damages caused by 2 other "professionals" sent by Angi. Pricing was rather high compared to other quotes to install exterior doors, but you get what you pay for in the end. I learned my...
My Handyman of Ann Arbor, Saline, and Chelsea
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Reviewed in July 2022
Installers did a fabulous job! Windows look great perfectly trimmed… Jobsite was left clean and orderly absolutely would use this company again. Their entire staff was a joy to work with.
Residential Renovations
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Doorbell Installation questions, answered by experts

Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you’ll need to do down the line.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

Natural fiber batts and spray foam insulation both work great for soundproofing. Newer materials, such as hemp batts, are more expensive but more effective for insulation and sound blocking. They are also more sustainable. There is also a professional system called Blow-In Blanket Insulation (BIBS) that is soundproof and moisture-resistant. However, BIBS must be installed professionally and can be a costly investment.

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.

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home.

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

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