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: 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: How long does fiberglass insulation last?

• <div><p>The <a href="https://www.angi.com/articles/when-should-i-replace-my-insulation.htm">life span of fiberglass insulation</a> can be as long as 80 to 100 years, but because of changing building codes, it&rsquo;s best to get your insulation checked every 10 to 15 years. Signs of degrading fiberglass insulation include bits of batts on the floor or batts detached from frames. Having optimal, healthy insulation in your home will improve its energy efficiency, lowering your monthly bills.</p></div>

Q: Do you need to insulate your basement?

• <div><p>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.</p><p>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 <a href="https://www.angi.com/articles/basement-insulation-options-and-costs.htm">basement insulation</a> is <b>$2,400</b>.</p></div>

Q: Do I need a vapor barrier in my basement?

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

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Verified Reviews for Doorbell Installation pros in Eureka, MT

*The Angi rating for Doorbell Installation companies in Eureka, MT 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 23, 2025

Reviewed in December 2025
Dynamic Plumbing was quick to respond, personable and provided options to get me the deal I was happy with. I would 100% recommend and hire again!
Dynamic Plumbing LLC
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Reviewed in August 2025
Good product but the absolute worst customer service.
Montana Dock and Deck INC
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Reviewed in June 2024
Luke's Service & Repair is excellent! Luke is very knowledgeable, professional and prompt. I highly recommend him!!
Luke's Service and Repair LLC
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Reviewed in November 2023
Hired company to tear down and replace wood patio cover. I expected the same style of patio. However, I was surprised when a better, more architectural design was presented, at no extra charge. Lumber was hauled away promptly. Patio installed and neatly painted. Honest people who do a great job....
J&M Home Inspections
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Reviewed in May 2023
They were really nice and did a quality work. They had a reasonable price and were on time. They were respectful of my property.
Handy Homes
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Reviewed in April 2023
Clint really cares about what he is providing and matches it up with the needs of the client.
Post Water Works LLC
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Reviewed in May 2021
They are hard working, personable, professional and great painters. They stand by their work, as they should for their work is amazing!! Our home looks like a million dollars and they are more than fairly priced and the quality is Extrodinair.
Blue Skies Painting
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Reviewed in May 2021
Absolutely fabulous! Renewal by Andersen did a great job. The windows are amazing and the workmanship is top notch. Waylin’s installation crew was fast, professional and a pleasure to work with. They installed the windows cleanly, and you couldn’t tell they were even there after all was said and...
Renewal by Andersen of Montana
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Reviewed in October 2019
Very thorough,took time to get the preparation work done, work done with care and protection for the house, no mess for me to clean up, delightful personality and very professional work completed, timely,highly recommend without reservation
Darryl Johnson Services
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Reviewed in August 2016
Marty was very professional and methodical while trying to figure out what was wrong my hot water tank. He didn't want to have the tank on less he had to, come to find out, the previous plumber installed a line wrong. Problem solved, I will definitely call him again for my plumbing needs.
The Plumbing Master, LLC
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Doorbell Installation questions, answered by experts

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.

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.

The life span of fiberglass insulation can be as long as 80 to 100 years, but because of changing building codes, it’s best to get your insulation checked every 10 to 15 years. Signs of degrading fiberglass insulation include bits of batts on the floor or batts detached from frames. Having optimal, healthy insulation in your home will improve its energy efficiency, lowering your monthly bills.

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.

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

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