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>

Is a radiant barrier better than insulation?

• <div><p>Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together. </p><p>Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.</p></div>

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Verified Reviews for Doorbell Installation pros in Dexter, OR

*The Angi rating for Doorbell Installation companies in Dexter, OR 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 Dexter, OR 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 November 21, 2025

Reviewed in November 2025
Tim from Spring Well Plumbing installed two faucets in the kitchen and bathroom and had to replace two shutoff valves which no longer worked. He did a great job in less than 2 hours. The price was very reasonable and I would hire him again in a minute.
Spring Well Plumbing, Inc.
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Reviewed in May 2025
Pierce Creek Electric was great to work with on our project, from the quote to the final install their communication was excellent . Jacob was professional in all aspects of the project and did a great job of coordinating with the other contractors working on the project. I would highly...
PIERCE CREEK ELECTRIC LLC
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Reviewed in June 2024
I have had Bill Christianson install many wood floors and carpeting in several properties over the years. He has Always done a wonderful job at a reasonable price. Upgrading the property. I would recommend him highly. He is a professional in his field.
Christiansen Floor Coverings
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Reviewed in November 2023
Sandy, the owner of Suite Home Customs, is very knowledgeable and detail oriented. She installed a stone fireplace mantle surround for us. I could have probably did the install, but there is no way I could have duplicated her expertise and craftsmanship. Would not hesitate to hire her for future...
Suite Home Customs LLC
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Reviewed in September 2023
They installed a perfect system for my business. Quickly and perfectly
Miles Security Solutions
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Reviewed in April 2023
They were on time, clean and respectful. The install was done well and looks great. We had one minor issue with a bad fitting and they were very responsive. It was fixed immediately
Harvest Valley Specialties
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Reviewed in April 2023
We were very pleased! Mike got us early installation and he and his crew were on time and good guys! Would use him again and again. Thanks to Mike and his crew.
Michael Hill Construction, LLC
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Reviewed in September 2022
I called them and they came right out and got my phone line installed in a very timely manner!! I was impressed how fast they came out and got things up and running.
TTC Communications, Inc.
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Reviewed in June 2022
Very accommodating with purchase options. Helped make it affordable. Quality install. Quality product.
DaBella - Eugene (Roofing)
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Reviewed in May 2022
Excellent pro install and love the quality flooring! Recommend highly
CVK Construction, LLC
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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.

Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together.

Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.

Insulation can be easy to install, depending on the condition of your walls, but there are many safety considerations and potential challenges involved. For example, most types of insulation are made from materials that can cause irritation if inhaled or if they come into contact with your skin. Additionally, installing insulation incorrectly can actually make moisture issues in your home worse.

Professionals can install a radiant barrier in a day or two, but DIY installation will take several days. The time it takes to install a radiant barrier depends largely on the size of the space and the installation method. Larger homes can take a pro two to three days to finish the job. It’s also quicker to lay foil over existing insulation.

Adding insulation to ceilings is an excellent way to increase the energy efficiency of your home. If your home's layout is such that you need insulation in the ceilings rather than in the roof, it's likely that at least some insulation already exists in the space. However, each additional inch of insulation you can add boosts the R-value by between 2.2 and 4.2.

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