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 you install fiberglass insulation yourself?

• <div><p>If you’re a savvy DIYer around the house, own the basic tools, and have enough time on your hands, you can definitely install fiberglass insulation yourself. Doing the work yourself will certainly keep overall <a href="https://www.angi.com/articles/how-much-does-insulation-cost.htm">insulation costs</a> down. However, if you’re not confident in your handy skills around the house, call in a professional.</p></div>

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Verified Reviews for Doorbell Installation pros in Irondequoit, NY

*The Angi rating for Doorbell Installation companies in Irondequoit, NY 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 Irondequoit, NY 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 17, 2025

Reviewed in November 2025
Installation went well, done quickly. Appreciated them coming out to Honeoye NY.
John Betlem Heating & Cooling Inc
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Reviewed in July 2025
Dan came when promised, had the lock installed in no time. He rekeyed it for me so that we didn't have to change the key. Very personable man! The price was indeed quite affordable. I'd hire him again in a heartbeat!
A-ffordable Locksmith
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Reviewed in February 2025
I had a great experience- punctual, professional, and knowledgeable. The installation was quick and my questions were all answered.
Affordable Plumbing
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Reviewed in July 2023
Highview Fence installed a shadow box wood fence at my house, and was great to work with. They were always able to answer any of my questions, and helped us throughout the entire process. They even helped me with another project installing a skylight above my kitchen. They went above and...
Flower City Fence
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Reviewed in August 2022
The installers showed up on time, were professional, did an excellent installation job, and answered all my questions. Kudos to Alexis Angulo! Thank you for a great job! I would have Rochester Glass Block Company again for window installations.
Rochester Glass Block
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Reviewed in January 2022
Excellent work, very customer-friendly, explaining everything clearly and answering all questions. Clean, tidy, polite. Bobby replaced all my first-floor outlets with 3-pronged outlets, installed a whole-house surge protector, and replaced my doorbell system. Everything is working well and I...
Nichols Electrical Contracting, Inc.
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Reviewed in August 2021
After door was installed the finished molding was not to our liking..We called Pace and they sent out Mike/Dan and they did a super job . This is our second door we have had installed. We would highly reccomend the company,the product and the installation. Thank you.
Pace Window & Door Corp.
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Reviewed in August 2021
Seemingly overcharged me and installed a replacement toilet flap that does not fit for reasons unknown to me.
Isaac Heating & Air Conditioning, Inc.
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Reviewed in July 2021
The installers were prompt and completed work in no time
VIP Gutters, LLC
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Reviewed in May 2021
Technicians installed and cleaned up after themselves. We were very pleased with the installation in an occupied rental unit.
Turnbull Heating & Air Conditioning
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Doorbell Installation questions, answered by experts

Ensures uniform application and maximizes insulation effectiveness and energy savings.

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.

Acoustic foam, fiberglass insulation, soundproof curtains, and specialized drywall are effective in reducing noise transmission.

The lifespan of crawl space insulation depends on how well you maintain your insulation and the type of insulation. Fiberglass will need replacing every 15 to 20 years on average if you don't have a vapor barrier in place. If you do have vapor barriers in place, then your insulation could last much longer. Spray foam insulation can last anywhere from 80 to 100 years.

If you’re a savvy DIYer around the house, own the basic tools, and have enough time on your hands, you can definitely install fiberglass insulation yourself. Doing the work yourself will certainly keep overall insulation costs down. However, if you’re not confident in your handy skills around the house, call in a professional.

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