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 June 25, 2026

Reviewed in June 2026
Jeff did a good job on the fence repair and door installation.
Premier Remodeling
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Reviewed in March 2026
Very friendly and communicative. Upgraded our electric panel and also happened to notice our doorbell wasn't working and helped with that too! Registered contractor with Focus on Energy so costs for panel upgrade are reduced based on income. Absolutely will call again when future needs arise.
All Nations Solar and Electric LLC
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Reviewed in January 2026
I was very impressed with Eli and his team. I wanted to update the bathroom and his team brought a great experience from customer service to installation.
Home Improvement Of Wisconsin Inc
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Reviewed in January 2025
Brent did great work installing my LVP Flooring.
Punchlist Pro Services
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Reviewed in November 2023
I had my windows installed last year and was so pleased with the service and quality that I called them this year for my tub/shower install. They were very professional, made sure they covered my flooring with tarps before working on the project, and cleaned up everything perfectly. My shower...
Mad City Windows & Baths
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Reviewed in June 2023
Scott installed a barn door and some closet shelving for us. He stained the door installed the accessories. Looks great!
Custom Storage Solutions LLC
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Reviewed in May 2023
Great service, affordable pricing for the product, wonderful follow-up and installation process. They send someone out to follow-up post-install to make sure everything was done proper and to expectations. Very pleased with experience.
Creative Home Technologies LLC
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Reviewed in January 2023
From estimate to installation everything went right on time. They worked with us around the holidays. The installation crew did a great job and cleaned the house before leaving. We had to move a piano so they could work and they even helped move it back in place! Thom, Mike, Jordan and Dave...
Windows of Wisconsin Inc
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Reviewed in October 2022
The installers were efficient and professional.
All Weather Insulation
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Reviewed in April 2022
I love how easy it is to operate our theater system now plus I can control our lighting, fireplace and heating from one remote. The installer was knowledgeable and professional. Our system works better than I could have imagined
Intelligent Home Systems
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Doorbell Installation questions, answered by experts

Yes, they address underlying issues, providing long-term seals and energy savings you might need help to achieve.

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.

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.

Doubling the insulation in your home also doubles the R-value of said insulation. In other words, by adding more insulation, you can reduce the heat loss by half. Most homes benefit from increasing insulation. Older homes, in particular tend to have less insulation as is, so doubling your insulation could drastically reduce your energy bills, keep your home more comfortable, and take the strain off your HVAC system.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

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