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>

Does insulating windows with plastic work?

• <div><p>Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and <a href="https://www.angi.com/articles/how-to-caulk-windows.htm">caulking your windows</a> to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.</p></div>

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*The Angi rating for Doorbell Installation companies in Opp, AL 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 February 11, 2026

Reviewed in February 2026
Very professional, did a great job installing our metal roof.
Henderson Roofing
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Reviewed in June 2025
Im very satisfied with the service i recieved from California Home Center. I had both my bathroom and kitchen remodeled in my vacation home in Temecula. The customer service was excellent. They kept me in the loop the entire time. They cleaned up well after too. I would definitely recommend...
California Home Center, Inc.
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Reviewed in May 2024
Honest business, respectful owner and very quick work.
Macks Pressure
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Reviewed in August 2023
For our seamless gutters, from initial phone call to installation, they were a pleasure to work with. We will use them again in about a year for our house gutters.
Southern Blend Property Solutions, LLC
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Reviewed in November 2022
Down to earth, customer driven, great communication. Will be calling them again!!
Adams Family Fencing
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Reviewed in August 2021
Got a call the same day and arranged for a meeting. Punctual, kept me informed and did great work.
Service Pro We Get It Done, LLC
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Reviewed in March 2021
Alex was very professional and very courteous and the workmanship he did was absolutely meticulous in installing our radon system!. I would absolutely hire him again!.
Colorado Radon Company
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Reviewed in February 2021
I needed some minor service on one of my garage doors. I figured it would take several weeks before I could get an appointment to have the work done. I received a phone call from Saltgrass the very next day, the tech. was in our area and came a couple of hours later. He had the parts he needed...
Saltgrass Garage Doors
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Reviewed in March 2013
Contacted me back after I left a voice mail and they showed up on time and talked to me about what I wanted done . They came back at the agreed upon time, completed the work as I had requested, cleaned up after themselves and charged me what I considered to be a very fair price. After they had...
MLB Electric Inc
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Doorbell Installation questions, answered by experts

Insulation is professionally installed by measuring spaces, cutting materials to fit correctly, and placing them without gaps for optimal thermal resistance.

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.

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

Upgrading insulation offers several benefits, including improved energy efficiency, which leads to lower heating and cooling costs. It also enhances indoor comfort by regulating temperature and can provide noise reduction. Additionally, better insulation has a reduced environmental impact and can increase your home's value and overall livability.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

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