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>

Can I install a radiant barrier myself?

• <div><p>It is possible to install a radiant barrier yourself. However, knowing <a href="https://www.angi.com/articles/how-install-radiant-barrier.htm">how to install a radiant barrier</a> and actually doing it are two totally different things. For example, it’s important that they be installed in a straight line but at an angle that creates a gap between the roof panels and the foil or spray. If this gap is too large or small, it won’t function as it should, and that may be hard to avoid if you’re only a novice. When in doubt, leave this job to a pro.</p></div>

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Q: What is the best type of insulation for drywall?

• <div><p>The most insulative type of insulation for behind drywall is spray foam insulation, but this is the most expensive insulation available. The most common insulation&mdash;sometimes considered the best for the value you get for the money&mdash;is fiberglass roll or fiberglass batt insulation, which is significantly more affordable but also far less insulative. The <a href="https://www.angi.com/articles/best-types-insulation.htm">best kind of insulation for your house</a> will also vary based on the climate in your area, your budget, and more. A professional insulation company can help you decide which type is best for your home.</p></div>

Q: Is it worth it to insulate a garage?

• <div><p>Insulating a detached garage won't reduce your home's heating or cooling bills&mdash;and insulating an attached garage will only have a small effect on your home's energy efficiency. However, insulating an attached garage can reduce the transfer of heating and cooling to and from the outdoors, which can reduce the amount of energy your home needs to stay comfortable. Also, having an insulated garage is just more pleasant. Balance the cost of insulating your garage with how you'll use the space to determine if the project is worth it.</p></div>

Q: Does a monolithic slab need insulation?

• <div><p>Monolithic slabs don&rsquo;t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.</p></div>

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Verified Reviews for Doorbell Installation pros in Decorah, IA

*The Angi rating for Doorbell Installation companies in Decorah, IA 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 Decorah, IA 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 20, 2026

Reviewed in May 2026
We hired Aaron for a number of projects from lawn care to various repairs on a recently purchased property. He was prompt to respond to our inquiry, very thorough in his evaluation of the issues and timely in the tasks so far. His prices were fair. We will continue to work with him for many...
Aaron Bilicki
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Reviewed in December 2024
Laura is an excellent house cleaner. She has taken care of cleaning our house every other week for many years. I am so grateful i don't have to do this work and she does an excllent job. We are so happy to have Laura working for us!
Laura Gillespie Services
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Reviewed in October 2023
Brian did a great job cleaning. He was very thorough and made sure he was doing everything as I wanted. Communication was excellent throughout the process.
B&L Cleaning Service
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Reviewed in July 2023
DO NOT HIRE THEM!! Their supposed "window professionals" sub contractors installed our bathroom window the wrong direction and we can't open it, so I am going to hire another company to fix it as I don't want to work with them anymore. They didn't double check the window size on a very large...
Priority Construction Services
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Reviewed in August 2022
Tyler was professional, responsive, timely and did a great job in a short window So glad I found him on Angi He will go a long way if he keeps that business model
Brags Sewer And Septic
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Reviewed in July 2022
He did a great job and ended up uncovering needed repairs on a visit for an estimate. He was able to trouble shoot all issues with my irrigation system and took the time to correct deficiencies in my system and also quoted me a more efficient system for my watering needs. Will be using him in...
Aries irrigation specialist
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Reviewed in June 2022
Professional, prompt and reasonably priced.
Aqua Systems of Nebraska
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Reviewed in August 2021
We were pleased with the promptness and overall instruction and installation. All was very professionally done.
Dog Guard
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Reviewed in December 2018
He did a beautiful job, I paid for the materials, and he did a good job with the repairs. Major repairs was done on the boards that was done in 2011, and some was not installed properly, he came back to fix the boards up he was able to re-fixed the boards properly. He was able to provide...
Jim Siebenaler Construction
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Reviewed in May 2016
<p>showed up when I was told that they would told me what they would be doing</p> <p>after first window was installed showed me how it worked </p> <p>after finishing all the window they had me inspect the to make sure I was happy with them.</p> <p>removed all old windows and other trash...
Window Depot USA of Eastern Iowa
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Doorbell Installation questions, answered by experts

The most insulative type of insulation for behind drywall is spray foam insulation, but this is the most expensive insulation available. The most common insulation—sometimes considered the best for the value you get for the money—is fiberglass roll or fiberglass batt insulation, which is significantly more affordable but also far less insulative. The best kind of insulation for your house will also vary based on the climate in your area, your budget, and more. A professional insulation company can help you decide which type is best for your home.

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 possible to install a radiant barrier yourself. However, knowing how to install a radiant barrier and actually doing it are two totally different things. For example, it’s important that they be installed in a straight line but at an angle that creates a gap between the roof panels and the foil or spray. If this gap is too large or small, it won’t function as it should, and that may be hard to avoid if you’re only a novice. When in doubt, leave this job to a pro.

Insulating a detached garage won't reduce your home's heating or cooling bills—and insulating an attached garage will only have a small effect on your home's energy efficiency. However, insulating an attached garage can reduce the transfer of heating and cooling to and from the outdoors, which can reduce the amount of energy your home needs to stay comfortable. Also, having an insulated garage is just more pleasant. Balance the cost of insulating your garage with how you'll use the space to determine if the project is worth it.

Monolithic slabs don’t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.

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