What is the downside of radiant barriers?

• <div><p>The primary downside of radiant barriers is their limited effectiveness in cold climates. They are designed to reflect radiant heat, making them less beneficial in cooler conditions where heat retention is more important. </p><p>Radiant barriers require proper installation to maximize effectiveness. Incorrect placement can lead to minimal benefits. They also do not provide insulation, meaning they should be used in conjunction with traditional insulation for optimal energy efficiency. </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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Last update on August 18, 2025

Reviewed in August 2025
Quick and easy assessment of problems and solutions. Honest and kind installation technicians. Competitive pricing and flexible scheduling all made this an easy project for us.
NEWTONIAN'S RENOVATION LLC
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Reviewed in February 2025
He cleaned up behind himself after completing the job. The paint job was excellent. I ordered curtains and blinds. I called asked if they could install them. He and his wife showed up installed both and didn?t over charge. I will definitely use them again.
Paint Unlimited, LLC
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Reviewed in June 2024
Tommy is my go to contractor for plumbing, electrical, carpentry, etc. He even installed my above ground pool. He does it all and does it right! Very dependable!
PERKINS CONSTRUCTION
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Reviewed in March 2024
Excellent. They made a great recommendation on what products to use, and completed the install quickly and carefully. Had water back in no time.
Pipemasters Construction
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Reviewed in January 2024
Yes! Daegan installed my Tesla wall charger, and I couldn't be happier with the service. Overall, I highly recommend his services for a seamless and reliable Tesla charger installation
Friends Electric LLC
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Reviewed in September 2023
Best value we found after shopping around and the service was wonderful. The installation crew was fabulous! Thank you (Randy B. Josh R. Carlos M. and Tyrone B) they did an awesome job. Very respectful, friendly, and left the house cleaner than they found it.
West Shore Home Raleigh-Durham
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Reviewed in July 2023
Kenneth Wynn came to install a generator transfer switch box inside my house and a plug for outside. He was very professional and was training two younger guys who were very nice and courteous. I was thankful that the Lord had put me in contact with somebody that I could trust! I would...
Wynn's Electric, LLC
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Reviewed in February 2022
I had to have a complete change out of my HVAC system. From the beginning of the service call with Joe the service manager to Drew the sales advisor it was a great experience. When the installers Rob and Seth arrived, they were on time. They were professional, courteous, and knowledgeable. They...
A Maynor Heating and Air Conditioning, Inc.
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Reviewed in May 2021
Dan Batchelder was excellent with his presentation & explained every detail so no surprises or additional expense. The install only took a few days to schedule. Roger Belanger our installer was also wonderful & timely. No mess to clean up & explained care for products. Both...
West Shore Home Denver
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Doorbell Installation questions, answered by experts

The primary downside of radiant barriers is their limited effectiveness in cold climates. They are designed to reflect radiant heat, making them less beneficial in cooler conditions where heat retention is more important.

Radiant barriers require proper installation to maximize effectiveness. Incorrect placement can lead to minimal benefits. They also do not provide insulation, meaning they should be used in conjunction with traditional insulation for optimal energy efficiency.

The time required for insulation installation can range from a few hours to a few days, with most projects taking 1-3 days to complete. The final duration depends on the project's size and complexity, the area size, and the type of insulation being installed.

According to a report from Energy.gov, radiant barrier installations can save between 5% and 10% on your energy bill each month that your HVAC cooling is in operation. That fact can mean savings of up to more than $325 per year for homes that experience frequent direct sunlight and high summer temperatures.

Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you’ll need to do down the line.

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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