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>

Can I use fiberglass insulation to soundproof a room?

• <div><p>We do not recommend fiberglass insulation for soundproofing purposes, especially if you are working on a room that’s part of your living space. <a href="https://www.angi.com/articles/diy-dangers-fiberglass-insulation-hazards.htm">Fiberglass insulation is dangerous</a>, and the installation process is hazardous. It is also harmful to the environment. When there are so many newer, healthier non-fiberglass alternatives in the market, the lower cost of fiberglass insulation simply doesn’t justify the harm and danger it poses.</p></div>

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*The Angi rating for Doorbell Installation companies in Upsala, MN 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 August 06, 2026

Reviewed in August 2026
From first contact through completion of the project, Kacey from All About Remodeling was professional, thorough and pleasant. He removed a tub/shower combination and replaced it with a walk in shower. Additionally, Kacey removed the flooring in this bath and a half bath with a LVT product. We...
All About Remodeling LLC
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Reviewed in October 2021
I was pleasantly surprised. Keith and Tyler were very helpful answered all the questions are very respectful. Their installation was neat been done in one day. I’ve been a maintenance person and or a carpenter for several years and I was thinking about doing this installation myself. After...
Total Comfort Heating and Cooling
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Reviewed in February 2021
Evan was super to work with! I've had him working on multiple projects, from detailed new trim work to match in a 100+ year old house (that he blend perfectly I might add) to appliance work installing a boiler radiator, to fixing my garage bay doors, to laying tin on my addition roof, he...
Mader Core
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Reviewed in November 2020
Fluency in English was a problem, otherwise the installers were personable and accommodating. They accidentally cut a wire in our security system, so a further contractor had to be hired to fix the problem.
Empire Today - Indianapolis
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Reviewed in October 2020
We had a new security system installed effectively by Mitch with Premier Provider-ADT. Nothing troublesome or negative to report. 10/10 in every category of service, price, and product.
ADT
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Reviewed in August 2020
Innovative Basement installed a partial drainage system in our basement, to interface with an existing system. The interface was incorrectly addressed, and there was further leakage at the site of the interface. The first technicians that came from IBS to look at it did not recognize any problem...
Groundworks
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Reviewed in July 2020
Excellent work. Very Professional team. If you're looking for a professional Minnesota based team to install a radon mitigation system for you, you will be happy going with Radon Stoppers.
Radon Stoppers
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Reviewed in October 2019
Very happy with Greensource Inc services. I received a call back the next day when I inquired about the windows and siding. Prices were reasonable, quality of windows and siding are good. Installation is done very neat. Installers cleaned up afterward and left my place very clean. The installers...
Heritage Restoration LLC
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Reviewed in August 2019
Great people to work with. Every step of the installation process was done on an agreed upon schedule and when extra time was needed (the cabinets did not arrive assembled), they got it done. They also completed a repair of cabinets at another house that I own. They were awesome. They...
Creative Cabinetry
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Reviewed in September 2016
Everything went well! We truly like the blinds that were installed by AllBrite Blinds. Exceptional consultation prior to us selecting our blinds. We had an idea of what we wanted but with the help of AllBrite Blinds we were able to select the best blind for the two rooms that were in need of...
AllBrite Blinds
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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.

We do not recommend fiberglass insulation for soundproofing purposes, especially if you are working on a room that’s part of your living space. Fiberglass insulation is dangerous, and the installation process is hazardous. It is also harmful to the environment. When there are so many newer, healthier non-fiberglass alternatives in the market, the lower cost of fiberglass insulation simply doesn’t justify the harm and danger it poses.

The life span of insulation is between 20 and 100 years. At that time, existing insulation can fall victim to gravity, resulting in compression, which reduces its insulating protection or R-value. If you can't simply add more insulation over the existing material, removing the old to increase the effectiveness of the new can reduce your energy bills and make the project worth the time and money investment.

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

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

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