Should I remove old attic insulation before adding new?

• <div><p>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: </p><ul><li><p>If the insulation is over 15 years old</p></li><li><p>If the insulation is wet or moldy</p></li><li><p>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></p></li><li><p>If you see signs of pest infestation</p></li></ul><p>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</p></div>

Can I install a radiant barrier myself?

• <div><p>It is possible to install a radiant barrier yourself. However, knowing <a href="https://www.angi.com/articles/how-install-radiant-barrier.htm">how to install a radiant barrier</a> and actually doing it are two totally different things. For example, it’s important that they be installed in a straight line but at an angle that creates a gap between the roof panels and the foil or spray. If this gap is too large or small, it won’t function as it should, and that may be hard to avoid if you’re only a novice. When in doubt, leave this job to a pro.</p></div>

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Verified Reviews for Doorbell Installation pros in Jayess, MS

*The Angi rating for Doorbell Installation companies in Jayess, 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 Jayess, 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 03, 2025

Reviewed in November 2025
From start to finish RidgeCrest handled everything quickly and efficiently to get me my beautiful new roof.
RidgeCrest Roofing and Restoration, LLC
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Reviewed in September 2025
The job was very well done and I received an excellent result. The entire process was professional from estimate to completion. Floors were completely demoed to the floor joists and the source of the damage was revealed and corrected with the installation of a French drain. I was kept informed...
Service Group as a Service - General Construction
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Reviewed in September 2024
Very professional, prompt , very good communication & I will definitely use them again!!!!
Dumpster Dog
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Reviewed in February 2023
Angel did multiple jobs for me including replacing rotted wood on front eaves of house and painting outside. Inside, he not only did painting, he built a bookcase into the alcove by the fireplace. Replaced hinges on kitchen cabinet doors, and a member of his team installed an outdoor ceiling...
Garcia's Remodeling Services
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Reviewed in February 2022
Fantastic person and worker. Communicated very well. He was always on time. He has a lot of skills that help do multiple jobs. He is the very best handyman that I have ever hired from Angi. I highly recommend this gentleman and his company. I will call him back every time I need help in any area.
Sunday Handyman
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Reviewed in June 2021
very polite and knowlageble of business and know what you want done.
D Nova Garage Doors
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Reviewed in May 2019
We were still living in another State when we purchased our home that needed some updating. We were confident enough to give the owner a key, and although we were far away; when we finally saw our new home-Step by Step had done an amazing job on the granite and marble they installed in our...
Stepp by Stepp Granite Services, LLC
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Reviewed in September 2016
<p>Very Professional company.. Company rep came out and measured for sizing. He explained to me my options and efficiency ratings compared to costs. The unit was installed as promised and on time. Very neat and organized job. When trim out time came, technician came in with boot covers on his...
Southern Air of Mississippi
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Reviewed in October 2012
He did all the work and hired electrical worker and made sure the central air and heat was properly installed <br />
Wesley Vaughan Construction
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Reviewed in August 2007
Couldn't have asked for better service. Initially, I contacted them on a Tuesday and was told they would be out here on Friday at 1pm. I had ordered a replacement windshield for an '02 Honda. When he arrived (2 hours early but he was in the neighborhood so he thought he'd try and do this job...
ASAP Auto Glass
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Doorbell Installation questions, answered by experts

It’s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat.

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.

It is possible to install a radiant barrier yourself. However, knowing how to install a radiant barrier and actually doing it are two totally different things. For example, it’s important that they be installed in a straight line but at an angle that creates a gap between the roof panels and the foil or spray. If this gap is too large or small, it won’t function as it should, and that may be hard to avoid if you’re only a novice. When in doubt, leave this job to a pro.

According to a report from Energy.gov, radiant barrier installations can save between 5% and 10% on your energy bill each month that your HVAC cooling is in operation. That fact can mean savings of up to more than $325 per year for homes that experience frequent direct sunlight and high summer temperatures.

Monolithic slabs don’t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.

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