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 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>

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>

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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*The Angi rating for Doorbell Installation companies in Dulac, LA 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 April 17, 2026

Reviewed in April 2026
Jacques with Blueair Heating and Air Conditioning installed my new AC system. They did a great job and I would recommend his service and company to all.
BlueAir Heating and Air Conditioning, LLC
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Reviewed in August 2025
Excellent skills and professionalism. Had a French door installed on my patio and couldn’t be more satisfied with the work done. Completed the work quickly and throughly!
We Got This Construction
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Reviewed in January 2024
In September 2017, I had surgery in New Orleans. On my way back home from the hospital, on a Saturday, my husband called to tell me that the AC was out. I called Lanes and by the time I got back to Houma, my AC was fixed and the guy was waiting in my driveway for the payment. Fast forward to...
Lane's A/C & Heating Services LLC
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Reviewed in September 2023
Fantastic experience. From the initial call through the complete installation of 13 new windows replacing 77 year old ones. Communication was very good and everything went as planned. I was particularly impressed with the quality of the workmanship of the two clearly experienced installers. ...
Acadian Windows and Siding LLC
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Reviewed in April 2023
I had them install 2 exterior doors that also needed repairing. They came in and fixed the problem with no hesitation. Some very hard workers I must say! Now I have two beautiful exterior doors. Next is my sunroom window. Thanks, guys!!
Harts Improvement, LLC
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Reviewed in August 2022
Hurricane Ida repairs: H & G was very professional at every step during the repairs. I am satisfied with the job that has been completed. Repaired interior walls due to water damage. Painters, Sheetrock Installers, and Carpenter for trim work were all excellent in the quality of their work....
H and G Construction, LLC
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Reviewed in July 2022
Replaced all outlets, switches and lighting in the entire house. They specialize in their recessed lighting and give an unbelievable price to install them. Their lighting prices are fair as well. He also found a celing fan that was already starting to catch fire. Would hire again, he will be...
Precision Electrical
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Reviewed in November 2021
Beyond my expectations! My technician’s name was Jacob and he was so sweet and patient, extremely knowledgeable and was very fast with the installation. I am so happy I decided to use Precision Door and I would 100% give my business to them again. Honestly such a humble and great technician....
Precision Door Service of New Orleans
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Reviewed in December 2020
They traveled hours to job site and even came back to exchange a factory dented coil. Price was excellent for the service. Complete install and correctly done
Bolton Mechanical Heating & Air LLC
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Reviewed in September 2020
They came as scheduled and quickly did an install of my 2 outdoor lights. Very reasonable price.
Rasfe Electric LLC
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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.

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.

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.

Depending on where you live and the conditions of your basement, you may not need to insulate your basement. Your best bet is to talk to a basement remodeling company to find out what they recommend doing.

Insulating your basement can help improve your home's energy efficiency, but it will also increase the cost of your basement remodel project. The average cost of installing basement insulation is $2,400.

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.

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