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 Mccomb, MS

*The Angi rating for Doorbell Installation companies in Mccomb, MS 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 Mccomb, MS 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 November 12, 2025

Reviewed in November 2025
They were really quick and professional, everything is working right. They did a full gutter system cleaning, sealing and installing brackets.
LeafFilter Gutter Protection
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Reviewed in July 2024
Gary Johnson was very professional, courteous & knowledgeable while installing our new central A/C unit. He even stayed well into the evening to be sure everything was working properly & we understood the new system before leaving our home . He was very great at communicating...
Johnson's Heating & Cooling
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Reviewed in December 2019
Very professional installation. Thank you
Gas Installation
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Reviewed in December 2019
Very professional install at a fair price. Very satisfied with the product. Personal interaction with company owner, Brad McManus, was second to none. He made two personal onsite trips to our home all the way from Baton Rouge...about a 2 hour drive. Would recommend him without reservation.
Pro Level Foam Insulation
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Reviewed in November 2019
They responded to my request through Home Advisors in less than 5 minutes, came out for the free estimate the same day, a Sunday, and had the lowest bid by far. They completed the gutter installation in one day in less than a week from my request. They did a great jobs and my gutters look...
Precision Gutters
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Reviewed in March 2018
Very prompt service initially. The liner looks and fits great. Very satisfied with it. The team of three he had working on the replacement did a great job. However, the job wasn't completed. The Jets and return wasn't cut in and installed. I went ahead and paid in full for the job...
Dougie's Pool Service
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Reviewed in December 2017
Charged too much. Worked less than 2 hours and charged $350 for a 10 minute installation of a part plus $75 service charge. Will not use again!!!
Salvation Plumbing
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Reviewed in February 2017
Very quick to contact me. Great customer service...we needed an extension for the install so had to re-schedule after he came out. No issues after install. Definitely recommend.
Haney Door Service
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Reviewed in August 2016
Remove carpet that had an attached pad over concrete. This was a commercial job that was very difficult to do. Installers tried to remove the carpet by hand and after 4 hours...only had removed 100 square feet. Mr Rayburn with his equipment removed the entire gymnasium including bleacher...
FloorScrapper
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Reviewed in June 2014
He was great and professional. I had the carpet within a week. The gentleman who came to install it was awesome. I like how fast they acted on my need. Everything they did was effortless. They were professional. They explained to me why they have to do it this way. It took them two days...
Wallace Carpet Barn
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Doorbell Installation questions, answered by experts

Minimal maintenance is required, though regular inspections to ensure insulation hasn't shifted or deteriorated can improve performance over time.

DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.

Heat lost through uninsulated basement walls can account for up to 30% of the total energy lost through heat transfer to the outdoors. While homes in mild climates won't gain as much benefit from having an insulated basement as those in cold climates, the effects are still noticeable on your energy bill.

Yes, you can use too much bubble wrap. If you overdo it with the wrapping, it can strain the top of your box and break open the taped seal, risking the chance that the contents of the box could fall out or break. Use enough wrapping to fully cover your item without compromising the security of your box.

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.

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