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>

Does bathroom insulation need a vapor barrier?

• <div><p>Yes. Bathroom insulation requires a vapor barrier. As a matter of fact, bathrooms and kitchens are the two areas of the home that should always get a vapor barrier because of the excess moisture. If you don’t have a vapor barrier in place in these rooms, the moisture will build up and eventually lead to mold and bacteria, not to mention the destruction of the insulation.</p></div>

Does the paper on insulation go in or out?

• <div><p>If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process. </p><p>A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.</p></div>

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*The Angi rating for Doorbell Installation companies in Republic, 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 December 01, 2025

Reviewed in December 2025
Steven was awesome in everything he, & his team did…from arriving on time, to removing the old windows, to installing the new ones…to quickly cleaning up! They did it all in such a short period of time! Couldn’t ask for a better team to work with! I would highly recommend using Window Expo for...
Window Expo
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Reviewed in October 2025
Ed and Jim were our installers and did a fantastic job on our new shower. They were very professional and answered any questions that we had. It only took 2 days to finish. Would highly recommend them.
Bath Expo
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Reviewed in May 2024
Since covid controlled our lives several years ago, I was reluctant to have windows installed in our lanai due to horror stories of companies in this business that failed to perform as promised. This March, 2024, I contacted Discount Aluminum about new windows on chance they were a...
Discount Aluminum
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Reviewed in July 2022
Eric and his team did a nice job. I would gladly recommend them for others having a ceiling installed.
Meyer Drywall
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Reviewed in April 2022
The company in Oak Harbor Ohio was very easy to work with. They made sure things were done right. Good installation. No complaints. They did a good job.
Radiant Windows LLC
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Reviewed in January 2022
Efficient and considerate workers who installed the new shower.
Joyce Windows, Sunrooms & Baths
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Reviewed in December 2021
Hands down the best around . After assessing our home Billy Installed a new electrical service to our house , explained everything throughly and had the job completed quickly . Very knowledgeable and willing to do whatever it took to get the job done correctly . We thank you for your service !...
Hall's Premium Electric LLC
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Reviewed in July 2021
Workman got here on time, did the work, and had the attic antenna installed in approximately 45 minutes. I paid the bill and he was on his way.
AR's and Yours Antenna and Satellite
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Reviewed in December 2020
Shawn installed 3 lights for me. Did a great job at a good price. Update: 05/21/2021. This was a nightmare experience. Shawn said that he could build a cabinet in my bathrooms. He completed the 1st one, and the top was not straight, and there was a hole in the drywall. He then said he would be...
SC Construction
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Reviewed in October 2020
We were remodeling a master bathroom and we received a damaged vanity from Home Depot. They made sure to come back 2 weeks later to finish the install once we received a new vanity. Thanks guys and good job.
K's Construction
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Top-Rated Doorbell installation pros in Republic - Updated Nov 2026

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Doorbell Installation FAQs, 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.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

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.

Yes. Bathroom insulation requires a vapor barrier. As a matter of fact, bathrooms and kitchens are the two areas of the home that should always get a vapor barrier because of the excess moisture. If you don’t have a vapor barrier in place in these rooms, the moisture will build up and eventually lead to mold and bacteria, not to mention the destruction of the insulation.

If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process.

A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.

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