Should you remove old insulation before adding new insulation?

• <div><p>You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.</p><p>However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.</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 Lewiston, UT

*The Angi rating for Doorbell Installation companies in Lewiston, UT 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 Lewiston, UT 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 October 07, 2025

Reviewed in October 2025
I needed an air conditioning unit installed. He was very knowledgeable and it worked perfectly. He did the entire job in a very timely manner. He is very friendly and easy to talk to. He cleaned up behind himself. I would call on him again, in a minute.
DDIY Construction LLC
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Reviewed in June 2025
Everything went well from start to finish. The sales person was thorough and answered my questions. Documentation was provided to my HOA and quickly approved. The installers did a phenomenal job. And the follow-up visit was complete. Very happy.
Power Home Remodeling
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Reviewed in May 2025
Dustin went above and beyond!! Such an amazing guy to work with. He and his team were fast and efficient getting my fence installed. So grateful I hoped on Angi and gave it a try definitely recommend using him you won't be disappointed!
Dustin Stokes Custom Fence LLC
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Reviewed in May 2025
The two installers were friendly, experienced, efficient, and well trained. When asked, both were willing to take the time to explain what they were doing and why they were doing it. They made sure the new equipment was working correctly and that we knew how to safely operate and use it. They...
WESTERN STAIRLIFTS & MOBILITY PRODUCTS COMPANY
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Reviewed in January 2025
Jon and Zack installed all the electrical in our new home from start to finish. They were knowledgeable and professional. We will continue continuing calling on them in the future.
JZ Electric LLC
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Reviewed in August 2024
The best service and work. Ideal Siding did an excellent installation and left the driveway spotless! I was amazed how quickly they could book us and get us done!
Ideal Siding Salt Lake City
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Reviewed in August 2024
Carlos and his crew did an amazing job. They dis landscaping work & installed 60 L.F of fence with an automatic gate operator. I would highly recommend them in any project you are looking for.
Sanchez Construction
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Reviewed in September 2022
Aaron is professional, communicative, and a problem solver. He went above and beyond for us and in a timely manner that allowed us to list our house on the market asap. He saved us from having to replace the entire cabinets (and countertops), by repainting the boxes and installing all new solid...
Impact Wood Refinishing, LLC
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Reviewed in August 2022
For the price we paid, we were disappointed in the defects that were noticed after the installation, debris in the glass pane and one of the decorative grids was not aligned properly.
Sears Home Improvements - Windows
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Reviewed in February 2022
I was impressed with the timing as I was installing solar and had a deadline to meet. Quality work and very clean work!
Hansen Quality Roofing, LLC
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Top-Rated Doorbell installation pros in Lewiston - Updated Nov 2026

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Doorbell Installation FAQs, answered by experts

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

Improves water efficiency, reduces oversight, and enhances landscape health.

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.

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.

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.

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