Should I remove old attic insulation before adding new?

• <div>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: <ul><li>If the insulation is over 15 years old</li><li>If the insulation is wet or moldy</li><li>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></li><li>If you see signs of pest infestation</li></ul>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</div>

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*The Angi rating for Doorbell Installation companies in Piney View, WV 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 Piney View, WV 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 27, 2025

Reviewed in November 2025
The process was proficient, from the materials needed, quote, the delivery and installation was was very timely. Also side note, they left my yard clean!
P. & M. Development, Inc.
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Reviewed in October 2025
These professionals are fantastic!!! They know what they're doing and do it well. They're efficient, thorough, kind, knowledgeable, and friendly. They are the best. When the situation is a mess, they work through it as though it's a "piece of cake". They had an emergency situation that gave...
Dynamic Plumbing & Mechanical LLC
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Reviewed in April 2025
Dave Hinkle Electric is an amazing company for your electric needs and repairs! They have great knowledge about what they’re doing, and very professional! Dave Hinkle Electric has been great help of mine and others that I know! Give them a call and they’ll get the problem fixed or installed!...
DAVE HINKLE ELECTRIC, INC.
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Reviewed in February 2025
He installed all of the trim in my house, his work is beautiful and he is very reliable in the work he does.
Cornerstone Renovations WV LLC
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Reviewed in September 2024
I called this company for an estimate on install. they came got the install done within two days of me calling for estimate and the price was very much around the estimate amount, a little cheaper to be exact. i love my new whirlpool. It has helped my arthritis very much already feels better. ...
Adkins Plumbing
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Reviewed in July 2024
North Carolina Water Consultants were easy to work with, they took their time showing the benefits of their system without pressuring me. They have upfront pricing and service after the sale. The installation was quick and professional.
North Carolina Water Consultants
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Reviewed in April 2023
I enjoyed that my Pros expressed the concern about being up to code, and had all of their materials ready to install same day. You can tell they have pride in their work and it really shows off at the end of the day knowing my home will be safe to use.
Disciple Electric Company, LLC
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Reviewed in November 2022
Tri County installed my gas furnace and my gas water heater. Both jobs completed as expected and done well. Rick is very professional, fair and honest. Highly recommend. I will be hiring them for another home project soon.
Tri-County Services, LLC
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Reviewed in April 2021
Installed the main ine and did not break the bank.
Hinton Plumbing
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Reviewed in May 2020
He went above and beyond everything I needed! Very affordable! We contacted him for a complete new landscape install include hardscaping. He came in at about 1/3 of the price of the competitors! He completed the job in a timely manner. All of the employees were very professional also! He even...
Veridian, Corp.
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Doorbell Installation questions, answered by experts

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation.

The most insulative type of insulation for behind drywall is spray foam insulation, but this is the most expensive insulation available. The most common insulation—sometimes considered the best for the value you get for the money—is fiberglass roll or fiberglass batt insulation, which is significantly more affordable but also far less insulative. The best kind of insulation for your house will also vary based on the climate in your area, your budget, and more. A professional insulation company can help you decide which type is best for your home.

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.

Yes, professionals can add extra insulation or backing for enhanced sound control.

Spreading tin foil over your windows works similarly to radiant barrier insulation, but not as well. It will reflect some of the sunlight that would otherwise come through the glass and warm up the inside of your home, so it might help a little to keep your home cool in the summer. However, the appearance isn’t preferable to blinds or drapes that can offer the same benefits. You might also consider tinting your windows instead, which is a more aesthetically pleasing change that can still block a good portion of the solar heat coming through your windows.

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