What is the best type of attic insulation?

• <div><p>The best type of attic insulation depends on where you live, your budget, and what stage of construction the attic is in. For example, if you're building a house, then structural insulated panels are a worthy investment since they're easy to install during construction and they're the most energy-efficient type of insulation. </p><p>Additionally, if you live in a very warm climate, then you can potentially save quite a bit of money by opting for reflective insulation, which is more affordable than comprehensive insulation but doesn't work well for cool climates. Blown-in, loose-fill, and spray foam insulation are all great options for attics in moderate climates.</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>

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: What are the pros and cons of DIY insulation installation compared to hiring professionals?

• <div><p>DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.</p></div>

Q: Is it OK to put plywood over insulation in an attic?

• <div><p>Installing sheets of plywood over <a href="https://www.angi.com/articles/attic-insulation-guide.htm">attic insulation</a> is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air&mdash;so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. </p><p>It&rsquo;s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you&rsquo;ll need to install a subfloor before putting plywood over insulation in your attic.</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

DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.

The best type of attic insulation depends on where you live, your budget, and what stage of construction the attic is in. For example, if you're building a house, then structural insulated panels are a worthy investment since they're easy to install during construction and they're the most energy-efficient type of insulation.

Additionally, if you live in a very warm climate, then you can potentially save quite a bit of money by opting for reflective insulation, which is more affordable than comprehensive insulation but doesn't work well for cool climates. Blown-in, loose-fill, and spray foam insulation are all great options for attics in moderate climates.

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home.

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

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.

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.

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