Should you remove old insulation before adding new insulation?

• <div><p>You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.</p><p>However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.</p></div>

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Q: What's the best insulation for a garage?

• <div><p>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. </p></div>

Q: Can I install insulation behind drywall myself?

• <div><p>Yes, you can <a href="https://www.angi.com/articles/how-to-install-insulation.htm">install insulation</a> behind drywall yourself, but only if your walls are not finished. If your studs are exposed, installing fiberglass insulation in roll or batt form is very straightforward and just requires a few tools and some safety equipment. If your walls are already finished and you&rsquo;re looking to add insulation, it&rsquo;s better to hire a professional, as you&rsquo;ll likely need blown-in insulation, which can be dangerous to work with and a challenge to get into the proper areas in your wall voids.</p></div>

Q: Do you have to staple insulation?

• <div><p>You don&rsquo;t need to staple insulation, as your drywall and studs will hold it into place. But if you already have a staple gun and staples lying around, it can help keep the product in place and avoid any shifting. But, most experts agree it&rsquo;s an unnecessary step.</p><p>If you&rsquo;re adding a vapor barrier, you will need to staple that in place.</p></div>

Q: Do I need to air seal my attic before installing insulation?

• <div><p>Air sealing isn't necessary for attic insulation, but it's incredibly helpful since it can help you identify and patch any existing air leaks. Failing to find these leaks before adding insulation can render your insulation less effective, leading to higher energy bills and potentially costly repairs down the line. </p></div>

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Verified Reviews for Doorbell Installation pros in Marcus, IA

*The Angi rating for Doorbell Installation companies in Marcus, IA 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 Marcus, IA 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 November 22, 2025

Reviewed in November 2025
Install seemed to go OK, crew was great - only reason I?m giving two stars. Communication with this company was horrendous. Scheduling my initial measurements was hilarious, because their staff doesn?t understand that I work on call and my schedule can change - I would give them at least 24...
1-800-HANSONS (Sioux Falls Windows)
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Reviewed in October 2024
I hired Cornbelt Concrete & Construction to pour a basement foundation, basement floor, garage footings, garage floor, and driveway approach for my new house and garage. They were professional, prompt, and did a high quality job! I would recommend them to anybody!
Cornbelt Concrete and Construction, LLC
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Reviewed in February 2024
They showed up, explained in detail how the carpet would be installed. They ran me through the steps of seaming carpet, stretching and finishing tips. I would hire this crew again for future projects!
Brimm Bros. Flooring
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Reviewed in November 2023
Brian helped me redesign the layout of my kitchen, installed new cabinets, and an island.
Kitchen Design Guys TN
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Reviewed in February 2023
Nov 2021- roof replaced. There were so many nails around my yard I lost count. Dec 2021 parts of said roof on two of the 3 structures blow off due to faulty installation. Debris all over the entire neighborhood, nails all over after we just cleaned up what was left after install, shingles in...
1-800 Hansons
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Reviewed in January 2023
Felt confident that they were the right ductwork company for us! Arrived on time and never stopped working the entire time they were here. I was able to be in the house while they were here so I witnessed their work ethic in doing a quality job for us. Really felt they went the extra mile in...
Swick's Duct Cleaning
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Reviewed in October 2021
The contractor was always in contact with me and did a beautiful job.
Gonzalez Contractors LLC
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Reviewed in October 2021
AGR is the company that we decided to use after a huge storm blew through and destroyed our roof, gutters, and siding. Zach came out with the insurance adjustor and made sure to point out every little detail that needed to be addressed. Zach took tons of pictures for proof, all while stating it...
AGR Roofing & Construction
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Reviewed in April 2021
We had no issues with the crew. They do a good job, do their best to make you happy. They installed new stairs at my mother's and did a great job. One of them remembered my mother on Thanksgiving and brought her a plate of food knowing her family was down with covid and she was on her own that...
Dominguez Construction 3:16
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Reviewed in February 2018
Installed windows, doors, siding extensive remodeling work for us. Prompt, accurate, willing to add on to initial work. Good communication as well. 5 stars +++
Brunst Construction
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Doorbell Installation questions, answered by experts

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.

Yes, you can install insulation behind drywall yourself, but only if your walls are not finished. If your studs are exposed, installing fiberglass insulation in roll or batt form is very straightforward and just requires a few tools and some safety equipment. If your walls are already finished and you’re looking to add insulation, it’s better to hire a professional, as you’ll likely need blown-in insulation, which can be dangerous to work with and a challenge to get into the proper areas in your wall voids.

You don’t need to staple insulation, as your drywall and studs will hold it into place. But if you already have a staple gun and staples lying around, it can help keep the product in place and avoid any shifting. But, most experts agree it’s an unnecessary step.

If you’re adding a vapor barrier, you will need to staple that in place.

Air sealing isn't necessary for attic insulation, but it's incredibly helpful since it can help you identify and patch any existing air leaks. Failing to find these leaks before adding insulation can render your insulation less effective, leading to higher energy bills and potentially costly repairs down the line.

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

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