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 Laurel Fork, VA

*The Angi rating for Doorbell Installation companies in Laurel Fork, VA 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 March 05, 2026

Reviewed in March 2026
Tommy arrived on time and did a great job installing a new dishwasher under a custom-made cabinet that had housed the old dishwasher for 16 years. Even though both dishwashers were standard size, there were some challenges with the new unit due to the customization of the previous installation....
Mega Plumbing Corp.
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Reviewed in January 2026
Upon discovering that when our now four-year-old home was built, the support beams in our crawlspace had not been properly installed, nor had adequate ventilation been provided resulting in the stability of our home being in jeopardy. We began a search for a reputable company to address our...
JES Foundation Repair
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Reviewed in November 2024
My family has a second home (for retirement) on 50 wooded acres in Virginia, where wildlife control is a very important issue. Since this house is unoccupied (by humans) for about 6 months out of the year, confidence that our home is free of undesirable wildlife is a priority for us. We...
Billy's Wildlife Control LLC
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Reviewed in March 2022
We hired BTR Heating and Air Conditioning Co to replace an old unit. The price was extremely reasonable. In fact, a good bit lower than a couple estimates I had received beforehand. And the installation was does quickly and professionally. I was so impressed that I plan to have them do the...
BTR Heating & Air
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Reviewed in September 2021
NOT TO BE TRUSTED and if you do, make sure you check not only their work but also what you already had. We hired him to install the seemless gutters. The product is good and they were quick to finish the job. We checked the gutters and paid them, as they were leaving, we had to call them...
Rock Solid Seamless Gutters
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Reviewed in November 2020
The installers were professional and friendly. We are very satisfied with the quality of their work.
West Shore Home Winston-Salem
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Reviewed in April 2020
Great experience from from our first meeting with James to quote the generator sale/installation until the date of completion. Neil and Chandler were professional, helpful and friendly throughout the installation process. Would recommend their service to all!
Blue Ridge Heating & Air
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Reviewed in March 2020
Good people to work with, professional in every way. Normally when we received 2" of rain water would start entering the basement. When we receive 3" the basement floor would be covered. Two days after installing their system our area received 8.5" of rain and our basement remained...
Fortress Foundation Solutions
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Reviewed in February 2020
Techs lost two hours because they did not have what they needed to do the job, and had to go back to their shop. Techs left the house when they finished installing, without verifying that the system was working inside. Consequently, it was not. I called office after hours to report. Customer...
JD Service Now - Plumbing
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Reviewed in January 2018
Joe was very knowledgeable and gave me a good and reasonable estimate. The installation was very smooth and final product looks amazing. I will recommend them anytime. They installed a vinyl ceiling in the outdoor porch. Anthony
Contract Exteriors, LLC
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Doorbell Installation questions, answered by experts

Yes, including recycled denim and cellulose from natural fibers.

When it comes to fiberglass insulation versus foam board, there are a few notable differences, both aesthetically and functionally. Fiberglass insulation is soft and flexible, meaning it can be squeezed into tight spaces more easily than foam board. Fiberglass insulation also has a higher R-value, making it a better pick for colder climates. However, foam board insulation can resist moisture and pest damage much better than fiberglass.

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.

While insulation is required for all exterior walls in a house, it is not typically required for interior walls. Local and state building codes mandate that new construction homes have adequate insulation in exterior walls and ceilings to suit the local climate.

However, there are several benefits to adding insulation to interior walls. It is excellent for sound-dampening between rooms and can help with temperature control by maintaining a regulated temperature in specific rooms and lowering heat transfer between adjacent areas. Insulating interior walls can also contribute to the overall energy efficiency of your home.

It's essential to use insulation materials specifically designed for air ducts. Common types of duct insulation materials include fiberglass, foam board, and reflective foil. These insulation materials have the right properties to withstand the temperature and airflow conditions within the ductwork. Using the appropriate insulation not only ensures efficient temperature control but also prevents potential safety hazards or the release of harmful particles into the air.

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