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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Verified Reviews for Doorbell Installation pros in Troy, VT

*The Angi rating for Doorbell Installation companies in Troy, VT 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 Troy, VT 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 08, 2025

Reviewed in May 2025
The Village of Orleans is extremely pleased with the exceptional kitchen renovations completed by M&R at the Orleans Municipal Building. From start to finish they demonstrated outstanding professionalism, attention to detail, and craftsmanship. The scope of the project included installing...
M&R Maintenance and Repair LLC
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Reviewed in June 2024
Travis completed ground work that included leveling the back yard and putting In two stone walls. Travis also build a deck on the back of my house and installed a sliding glass door. Travis works long hours to complete projects. .
Martin Excavation
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Reviewed in November 2022
Failed to complete contract. Improper installation of rain gutters resulting in over flow of water causing erosion of soil around foundation. Failed to install flashing around chimney causing water to leak in under Steel roof panels. Failed to install flashing on gable where garage roof meets...
Doug Hodge
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Reviewed in July 2022
Tim was very professional. Shows up on time. The installation was done well and the site left cleaned. I would recommend.
Sun Shield Products
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Reviewed in January 2022
Super! I have been putting in Select Blinds through our house since we moved in a couple of years ago. as we have worked on sections. Some rooms had nothing, others had old foreign-made blinds. Directions for measuring were great, emails communicated through the process, delivery was always...
SelectBlinds.com
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Reviewed in February 2021
Roger did a very nice job installing our antenna. He was very knowledgeable and had much better equipment than I was able to get on my own. I am amazed at all of the channels we can get.
Roger's Antenna Service
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Reviewed in July 2020
Outstanding experience, from day one to completion. I have never experienced previously this level of customer service, from initial discussions, planning, signing the contract to installation, and paperwork. I am not exaggerating when I say that every single person at the company delivered a...
Lumina Solar, Inc.
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Reviewed in October 2016
I asked if they could also drill wholes for the curtain rods and shade hooks and they took care of it. They broke a casing and bought new lumber and re-framed the door. They couldn't remove the old door knob and purchased another one to finish the job for me. They did not charge extra for...
G. L. Hall Masonry
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Reviewed in November 2013
It went very well. Jason was punctual and efficient. This installation was for the final section. All Seasons had completed most of the house for us previously, and did the same fine job then. Gutters and downspouts look nice, are easy to clean and are doing the job and holding up well after 3...
All Seasons Seamless Gutters
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Reviewed in February 2013
Their service worked out wonderfully. They were very helpful, friendly, and did what they said they were going to do when they said they said they would do it. I was very pleased. They had the best price for purchase and installation than the other big stores we looked into.
Lapierre's Decorating Center
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Doorbell Installation questions, answered by experts

Insulation can be easy to install, depending on the condition of your walls, but there are many safety considerations and potential challenges involved. For example, most types of insulation are made from materials that can cause irritation if inhaled or if they come into contact with your skin. Additionally, installing insulation incorrectly can actually make moisture issues in your home worse.

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

It is usually possible to install insulation yourself, but it’s often better to hire an insulation professional. An experienced insulation pro can determine which type of insulation is best for your space and the R-value get the most value and comfort in your home. Certain types of insulation can cause skin, eye, and lung irritation, and a professional will have the equipment necessary to keep themselves safe and limit the effect on your indoor air quality after the installation. Certain types of insulation—like blown-in and loose-fill insulation—demand a professional for proper functionality and safe installation.

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 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.

The Troy, VT homeowners’ guide to doorbell installation services

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