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>

Is a radiant barrier better than insulation?

• <div><p>Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together. </p><p>Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.</p></div>

Should wall insulation be faced or unfaced?

• <div><p>Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.</p><p>Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.</p></div>

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*The Angi rating for Doorbell Installation companies in Gallipolis, OH 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 September 05, 2026

Reviewed in September 2026
Worst experience with this company! We hired them to install a new front door and level our house. Paid half up front and waited 6 weeks for them to do the work. They mis-measured the door opening so they got the wrong size door. (Too wide) Without even discussing this with us, they took it...
Harrison Remodeling and Construction
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Reviewed in August 2026
This is the second time I have hired Mr Coblentz. He installed the metal roof on my hour and most recently a metal roof on my mother’s house. Both jobs were done expertly and look very nice. No hesitation at all about recommending him.
HC Construction
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Reviewed in March 2023
I was very pleased with the installation and work. My floors are beautiful. They were on time and stayed right with the job until it was completed
Mershon Contracting
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Reviewed in February 2023
From the sales team to the owner, everyone was extremely knowledgeable and friendly. The installation was expertly done and they cleaned up perfectly.
Sunrush Water
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Reviewed in December 2022
Hats off to Joe Russell and his crew at 3R Builders. They did a new roof, new deck, and installed some doors for us this past fall. Very dependable and professional workers. They answered our questions, told us about our options, and pointed out the pros and cons of what we wanted. I was...
3R Builders
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Reviewed in August 2022
THERE ARE NOT ENOUGH STARS IN HEAVEN TO SAY HOW WONDERFUL MR. ADKINS AND HIS CREW WERE TO US!!!!! OnJuly 1st. There was a very bad storm in Mason Co,. And we were without electricity for 7 hours. During that time the loss of power ruined our bladder tank in our well house. My husband and I have...
Adkins Plumbing & Contracting, LLC
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Reviewed in November 2021
These two guys were on time after calling to giving me a reminder before leaving the office. They worked outside all day and found the problem I was having and installed 5 light fixtures. They advised me during the day about things they found and what the progress was. Quiet and respect full....
Mr. Electric of Charleston
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Reviewed in January 2021
I hired Alltek to install a drainage system in my crawlspace. This company was very helpful, the quality of their work was awesome. The salesman came to my house, explained everything in detail and the estimate was FREE! I had gotten estimates from a couple other companies and Alltek was by far...
Alltek Environmental Services
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Reviewed in April 2016
Ted and his employees did a great job. Clean, neat and professional. Installed in 2 days.
DeLong Air Inc
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Reviewed in August 2014
professional installation, pleasant to work with and true to their word <br />
Kar Home Repair & Remodeling
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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.

Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together.

Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.

Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.

Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.

The time required for insulation installation can range from a few hours to a few days, with most projects taking 1-3 days to complete. The final duration depends on the project's size and complexity, the area size, and the type of insulation being installed.

Professionals can install a radiant barrier in a day or two, but DIY installation will take several days. The time it takes to install a radiant barrier depends largely on the size of the space and the installation method. Larger homes can take a pro two to three days to finish the job. It’s also quicker to lay foil over existing insulation.

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