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>

What is the best type of attic insulation?

• <div><p>The best type of attic insulation depends on where you live, your budget, and what stage of construction the attic is in. For example, if you're building a house, then structural insulated panels are a worthy investment since they're easy to install during construction and they're the most energy-efficient type of insulation. </p><p>Additionally, if you live in a very warm climate, then you can potentially save quite a bit of money by opting for reflective insulation, which is more affordable than comprehensive insulation but doesn't work well for cool climates. Blown-in, loose-fill, and spray foam insulation are all great options for attics in moderate climates.</p></div>

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Q: What is the best insulation for HVAC ducting?

• <div><p>Fiberglass is the best insulation for HVAC ducting because it's inexpensive, widely available, versatile, and long-lasting. Fiberglass also offers acoustic insulation in addition to thermal insulation, which can contribute to a more peaceful home environment. You can use other materials like mineral wool, but fiberglass is the industry standard. </p></div>

Q: Do professionals handle attic, wall, and floor insulation?

• <div><p>Yes, professionals install and upgrade insulation for all home or business areas.</p></div>

Q: Is it OK to put plywood over insulation in an attic?

• <div><p>Installing sheets of plywood over <a href="https://www.angi.com/articles/attic-insulation-guide.htm">attic insulation</a> is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air&mdash;so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. </p><p>It&rsquo;s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you&rsquo;ll need to install a subfloor before putting plywood over insulation in your attic.</p></div>

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Verified Reviews for Doorbell Installation pros in Le Roy, MN

*The Angi rating for Doorbell Installation companies in Le Roy, MN 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 Le Roy, MN 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 May 13, 2026

Reviewed in May 2026
Great job! Looking great! Thanks Edgar!
Camacho's Concrete LLC
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Reviewed in January 2024
The crew that did our install was very professional and efficient! January install had me worried a bit, but I shouldn't have. The entire project was ahead of schedule and they communicated well throughout the whole process. Highly recommend this company! Job#782412
Mad City Windows & Baths
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Reviewed in October 2023
Prompt calls, came when he was supposed to come, did the job and suggested additional areas we should be aware of.
JMAX Specialty Contracting, Inc.
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Reviewed in August 2023
It was a good job; they did a really good job, like detailing everything and making sure that the bathroom was very clean, and it was like walking into a brand new space.
M&S Cleaning Services
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Reviewed in June 2023
Frank and Son Home Improvement was great and I highly recommend them. I called them and they came out the same day and I had an estimate the same day. They showed up the days and times when they said they would. The work was perfect. You couldn't even tell where the damaged celling was. ...
Frank and Son Home Improvement
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Reviewed in April 2023
Offered to help me out when I was far away.
Jerry Witt
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Reviewed in February 2023
The communication was great, the lights were beautiful and put up when they said they were going to!
Custom Christmas Lighting
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Reviewed in February 2023
My previous patio door was on its last life from when the house was built in 2005. I had towels in it to prevent the wind coming in. The floor would have snow occasionally because of the gaps in the door. Unfortunately, the builders put in a very cheap door. When I contacted ACE I knew I wanted...
All Craft Exteriors
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Reviewed in June 2022
We had an amazing experience with Samsons Const LLC . They installed a new standing seam metal roof on our personal home. They did an excellent job very professional and got the job done on time. Oh and the communication was awesome . Thanks Manny
Samsons Const. LLC
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Reviewed in September 2021
It went very well! It was Fast, quick and reliable!
K&M Unlimited
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Doorbell Installation questions, answered by experts

Fiberglass is the best insulation for HVAC ducting because it's inexpensive, widely available, versatile, and long-lasting. Fiberglass also offers acoustic insulation in addition to thermal insulation, which can contribute to a more peaceful home environment. You can use other materials like mineral wool, but fiberglass is the industry standard.

Yes, professionals install and upgrade insulation for all home or business areas.

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.

The best type of attic insulation depends on where you live, your budget, and what stage of construction the attic is in. For example, if you're building a house, then structural insulated panels are a worthy investment since they're easy to install during construction and they're the most energy-efficient type of insulation.

Additionally, if you live in a very warm climate, then you can potentially save quite a bit of money by opting for reflective insulation, which is more affordable than comprehensive insulation but doesn't work well for cool climates. Blown-in, loose-fill, and spray foam insulation are all great options for attics in moderate climates.

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.

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