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>

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Q: How long does it typically take to install attic insulation?

• <div><p>It is generally completed in a day, depending on the attic size and access difficulty.</p></div>

Q: Will pros manage window drafts more effectively than DIY methods?

• <div><p>Yes, they address underlying issues, providing long-term seals and energy savings you might need help to achieve.</p></div>

Q: How long does open-cell foam last?

• <div><p>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.</p></div>

Q: Should ductwork be wrapped in insulation?

• <div><p>Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated. </p></div>

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Verified Reviews for Doorbell Installation pros in Advance, MO

*The Angi rating for Doorbell Installation companies in Advance, MO 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 Advance, MO 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 29, 2026

Reviewed in May 2026
John and his crew did a great job on my siding. They knocked it out in no time
YARBRO EXTERIOR HOME RENOVATION LLC
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Reviewed in April 2025
I would highly recommend Greg Hill. He’s a great guy and he knows what he’s doing. We appreciate all the work he did on our new church project. He took a 112 year old building and turned it into a modern day sanctuary, kids church and offices. We are totally loving it.
HILL AND HILL, LLC
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Reviewed in February 2025
She did a very good job cleaning for me. Will use her again
Weezer's Cleaning Service
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Reviewed in December 2024
I was so impressed not only with his knowledge but also his professionalism. He was incredibly cost efficient and was able to work me in so fast to get a much needed appointment completed. I will definitely be referring all of my friends and family.
Pobst Hardware & Farm Supply
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Reviewed in November 2024
Professional install and great service. MattÃ¢Â Â s very easy to work with. Contact you fast with an questions or concerns.
Comfort Kings Southeast Missouri
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Reviewed in October 2024
She did a very good job. Was thorough in her job. Good personality. I would use her again.
Weezer's cleaning service
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Reviewed in May 2024
Great company!!! Fast affordable and very professional!!! Will continue to use them for all my lawn care needs!
JP & BS Lawncare LLC
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Reviewed in October 2022
Excellent company! Good work and efficient!
Pates Construction
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Reviewed in November 2020
Installation went smoothly. Workers were very professional and efficient.
Jim Bollinger & Son LLC
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Reviewed in July 2014
Ken's crew worked very hard installing and cleaning up work site after making home improvements. Highly recommend this company.
SOUTHEAST HOME IMPROVEMENT
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Doorbell Installation questions, answered by experts

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.

It is generally completed in a day, depending on the attic size and access difficulty.

Yes, they address underlying issues, providing long-term seals and energy savings you might need help to achieve.

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.

Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated.

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