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 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 you wear a mask when cutting insulation?

• <div><p>For your safety, you should always wear a mask when cutting batts of fiberglass insulation. We also recommend wearing eye protection, safety gloves, and long sleeves to protect your skin. Properly suiting up helps you avoid several fiberglass issues, such as cuts from the tiny shards of glass and inhaling small bits of fiberglass.</p></div>

Q: How do you insulate windows without plastic?

• <div><p>Insulating windows without plastic is usually the better method. Outside of simply replacing your windows, you could buy cellular shades, which trap air between the window and the home, add a window film that blocks UV rays and traps heat, or cover your windows with a low-emissivity coating called &ldquo;low-E.&rdquo;</p></div>

Q: Does an attic floor need a vapor barrier?

• <div><p>Vapor barriers in attics are a bit outdated and most areas no longer recommend them for attic spaces.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.</p></div>

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Verified Reviews for Doorbell Installation pros in Salem, SD

*The Angi rating for Doorbell Installation companies in Salem, SD 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 Salem, SD 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 June 07, 2026

Reviewed in June 2026
TNT tree removal was very friendly and professional. The service was very quick. They cut me a great deal and away the trees and removed the stumps. I like that I came home to a clean removal each day. I would recommend and use them again.
TNT Tree Service
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Reviewed in July 2025
did a good job. also was checking other possible issues and explanations on those issue and suggested possible solutions. very happy with the job.
The Grand Rising Group
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Reviewed in June 2025
Great job!!! Would definitely hire again!
Deckers
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Reviewed in May 2024
Very well! Very friendly and kept asking if everything was alright make my sure it was exactly how we wanted it!
R&C Home Repair LLC
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Reviewed in July 2023
His quality of work is amazing! This was a very challenging project. He was prompt, courteous, and went above and beyond. Excellent communication.
Neighborhood Mason, LLC
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Reviewed in February 2023
She is flexible, on time, and always dependable.
Leslies Cleaning
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Reviewed in December 2022
These guys are fantastic! Super nice crew and very flexible! Definitely are top notch!
Buckets & Brushes
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Reviewed in December 2021
Project went smooth from start to finish. Definitely added insight onto how the project should work versus what I was originally expecting and the finished product turned out way better than what I had envisioned.
JP Contracting LLC
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Reviewed in August 2020
He went over and beyond what I was looking to have done and was very flexible with my schedule and the weather. Would HIGHLY recommend!!!
Focus Land Management
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Reviewed in August 2019
I don’t think she understood what was expected. It was more of a light cleaning. She came at one and left at 5:30 saying she had to cook supper for her husband. So she shorted me three hours. She did say maybe she could make them up next time? She ran the dishwasher withthree things and one was...
Handy -- Sioux Falls
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Doorbell Installation questions, answered by experts

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.

For your safety, you should always wear a mask when cutting batts of fiberglass insulation. We also recommend wearing eye protection, safety gloves, and long sleeves to protect your skin. Properly suiting up helps you avoid several fiberglass issues, such as cuts from the tiny shards of glass and inhaling small bits of fiberglass.

Insulating windows without plastic is usually the better method. Outside of simply replacing your windows, you could buy cellular shades, which trap air between the window and the home, add a window film that blocks UV rays and traps heat, or cover your windows with a low-emissivity coating called “low-E.”

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.

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