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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Last update on September 20, 2024

Reviewed in September 2024
Joseph did what he promised, when he promised. From inspection, estimate, and install all were as communicated and exactly as promised. I would recommend him without hesitation.
Synergy Electric
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Reviewed in September 2024
We had an excellent experience with Renewal by Andersen. From the initial design to the final installation, the workers were very professional, communication was excellent, and craftsmanship was superb. They had excellent attention to detail, and the design consultant and installers were...
Renewal by Andersen of Montana
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Reviewed in May 2023
Our garbage disposal died, and Brian worked with us to find the right replacement and got it installed quickly (less than a week, closer to a couple days). When we had some trouble with it later, he responded to texts over the weekend and came back to adjust it within two days at no charge. He...
CC&K, LLC
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Reviewed in July 2022
We are very pleased with the installation of our pellet stove. Mark did a great job, and was very professional as well as friendly.
Orca Fireplace, LLC
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Reviewed in November 2020
This young man came down to Big Arm in an evening and repaired a gutter and cleaned them out. Then he checked other gutters and pulled out bird nests I didnâ t even know were there. He just returned to install gutter guards to be sure no more birdies make their home in my gutters. A very...
Flathead Valley Gutter Cleaners - Home Facebook
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Reviewed in January 2020
problem was the drum which was off balance due to an imperfection in it. I was quoted a price for a new drum to be installed, but decided due to age of the machine to buy a new one.
Hudson Appliance Repair
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Doorbell Installation questions, answered by experts

A radiant barrier is a form of insulation topped with a reflective material designed to keep homes cool during hotter months. It is generally considered worth the investment if you live in a hot, sunny climate, as the cost can be recouped over time through lower energy bills. Installation costs typically range from $0.10 to $1 per square foot. After installation, homeowners in warm climates may save between $7 and $15 per month, potentially reducing their electric bill by 5% to 10%. The exact savings will vary depending on your location and the type of barrier chosen.

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.

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.

Through R-value assessments based on climate and existing insulation.

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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