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 Bangs, TX 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 Bangs, TX 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 16, 2025

Reviewed in May 2025
Installed mulch beds, natural rock work, hardscape walkways, driveway entry features, gate and more. Great work!
88 Outdoor LLC
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Reviewed in August 2022
It would be very difficult to explain all of our complaints with such a small character limit, so I will sum it by saying that in the over 70 years I have been on this earth, I can’t readily recall a worse home improvement experience than what I had with Abundant Solar and Fred Brimhall....
Abundant Solar LLC
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Reviewed in February 2022
Wesley was great. We not only had a full septic tank to pump out, Wesley found that both toilet exit tubes were clogged, and he resolved this issue as well. My wife and I didn’t have the funds for this emergency pump-out, and Wesley agreed to do the work now and just send us an invoice to pay...
WS Septic Pumping & Installation, LLC
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Reviewed in August 2021
Quick response to my inquiry. They showed up when they said they would, diagnosed the problem and returned when they said they would to install the part. No excuses, just excellent customer service.
Appliance Guardian
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Reviewed in December 2020
Ranch Pro Fence Co. just completed a job for us at our home in Brownwood. Timothy Hall removed our old chain link, cleared all the vegetation that had grown up and around the fence, installed a beautiful cedar privacy fence and trimmed and lifted the canopy on our trees. He did a phenomenal...
Ranch Pro Fence Company
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Reviewed in April 2020
Attention to detail was beyond my expectations!!! The installation was quick and easy. They even put my furniture back! These guys are fair and professional from start to finish! Will definitely be calling them again.
Fair Price Pros
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Reviewed in August 2019
My experience with Portal Granite in the beginning was excellent he met with us to pick up the slab , install was within two days. During the install his people broke the countertop.... during The process of pulling up old. put a hole in my wall. was not going to come back that day when the...
Portal Granite Designs
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Reviewed in October 2018
They arrived when they said and did a professional job installing. The value was excellent. I am using them again to repair a garage door opener that I did not replace at the time I put the door in.
Reliant Overhead
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Reviewed in September 2017
The carpet quality is excellent as was the install and entire process. The quality is better than Home Depot and the price is far lower. Overall excellent experience.
Minuteman Carpet Services Inc
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Reviewed in July 2017
Wonderfully. Professionally installed high quality windows on time and according to the contract. Good customer service, making sure we were happy with the job.
Battles Home Improvement
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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.

It is generally completed in a day, depending on the attic size and access difficulty.

Fiberglass is considered a favorite garage insulation choice due to its combination of affordability, ease of installation, and overall effectiveness. Fiberglass provides good thermal resistance, helping regulate garage temperatures and minimize heat transfer. Additionally, fiberglass is moisture-resistant, reducing the risk of mold or mildew formation.

Adding insulation to ceilings is an excellent way to increase the energy efficiency of your home. If your home's layout is such that you need insulation in the ceilings rather than in the roof, it's likely that at least some insulation already exists in the space. However, each additional inch of insulation you can add boosts the R-value by between 2.2 and 4.2.

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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