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>

How do I choose the right type of insulation?

• <div><p>Your home's location, budget, and the type of insulation you’re using are just a few of the factors that can help you <a href="https://www.angi.com/articles/r-you-using-right-type-home-insulation.htm">choose the right insulation</a>. For example, blown-in insulation is typically used in attic spaces, while batts and rolls are ideal for floors and walls. Blown-in insulation is usually a good option if you're adding more insulation to an area that already has some, but not enough.</p></div>

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*The Angi rating for Doorbell Installation companies in Big Pine Key, FL 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 Big Pine Key, FL 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 March 03, 2025

Reviewed in March 2025
Alex & associates did a complete kitchen remodeling at our home. He did an excellent job, we're thrilled with our new kitchen which included taking out old cabinets and counter tops, installing all-new solid wood cabinets, crown moldings,install large farm sink,& new garbage disposal, new...
A&S Developers and Service LLC
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Reviewed in December 2022
Mike and his team were very professional and handled my window and door installation in the lower keys recently. We had every door and window replaced in the house and it was a huge job. I would highly recommend them for a job like this to anyone in South Florida. Mike always answered the phone...
Hurricane Managment Group LLC
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Reviewed in September 2022
So pleased with the outcome of our kitchen cabinet install. It was tricky as they are from Denmark and not as commonly used here. Dominick was skilled and very efficient. We would definitely hire him again.
Conch Remodeling, LLC
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Reviewed in May 2022
Was on time and did a Great Job on our storm door installation!
MLD Rentals & Remodels, LLC
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Reviewed in December 2021
Nathan's is a wonderful company. They do quality work at a fair price. They installed a wood floor in my house that previously had a combination of carpet and tile over a concrete floor, as well as new trim work around all my doors and windows and new crown moulding. The installers were...
Nathan's Carpet and Flooring
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Reviewed in August 2021
They installed a dual-zone Mitsubishi mini split system in my home, did a wonderful job! Best purchase I've made, I love my mini splits. They are quiet and cool the house in a short time, they look great and were installed professionally with required permits. Highly recommend this...
Powerhouse Air Conditioning, LLC
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Reviewed in June 2021
2020 has passed and we couldn't be happier with our completed first floor project, thanks to Jim Rutherford Construction. Jim was willing to tackle what other local well known contractors were either unwilling to consider or bid so high as to be unaffordable. Our project proved to be a technical...
Jim Rutherford Construction & Remodeling LLC
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Reviewed in December 2020
His craftsmanship is next level up and his knack for detail is amazing. He came to us with ideas and also listened to what we wanted and made it absolutely amazing. We did not discuss the floor boards and he installed them and glad that he did, it now looks very modern. They did a great job, it...
OJs Renovations & Custom Carpentry - Home Facebook
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Reviewed in November 2020
Very professional from the beginning contact for an estimate to conclusion of installation. Work crew was outstanding.
P Saylor Fence Co
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Reviewed in April 2020
Responded quickly , good price and installers did an excellent job and listened to what I wanted . Will recommend to others .
Cool Aid Air Conditioning
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Doorbell Installation questions, answered by experts

Fiberglass is the best insulation for HVAC ducting because it's inexpensive, widely available, versatile, and long-lasting. Fiberglass also offers acoustic insulation in addition to thermal insulation, which can contribute to a more peaceful home environment. You can use other materials like mineral wool, but fiberglass is the industry standard.

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.

Vapor barriers in attics are a bit outdated and most areas no longer recommend them for attic spaces. For vented attics, the best method is usually to install drywall and cover it with latex paint before attaching insulation fiberglass, cellulose, or foam insulation. When renovating an attic to use as a living space, a contractor can guide you on the best way to cover insulation.

If you feel your energy bills are too high or your HVAC system is working harder than necessary to maintain the correct temperature in your home, you may have an under-insulated home. If you’re unsure, consider having your system’s efficiency assessed by a local independent energy auditor.

Your home's location, budget, and the type of insulation you’re using are just a few of the factors that can help you choose the right insulation. For example, blown-in insulation is typically used in attic spaces, while batts and rolls are ideal for floors and walls. Blown-in insulation is usually a good option if you're adding more insulation to an area that already has some, but not enough.

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