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>

What are the four common types of insulation?

• <div><p>While there are many different kinds of insulation, spray foam, blown-in, foam board, and batt and roll are the four types you’re most likely to see. That doesn’t mean they’re alike, though. Each one varies drastically in terms of cost, materials used, and how they’re installed—not to mention, how well they limit heat transfer.</p></div>

Is bubble wrap or dish foam better?

• <div><p>Bubble wrap is better for moving since it can be cut to size, whereas dish foam comes in precut sheets that are harder to manipulate. However, if you’re packing items like dishes, wine glasses, picture frames, or mirrors, dish foam will protect them better. Ensure you measure your box beforehand so you know what size dish foam to purchase. </p></div>

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Q: Can you install a radiant barrier under insulation?

• <div><p>It&rsquo;s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat. </p></div>

Q: How do pros determine the right type and amount of insulation for my attic?

• <div><p>Through R-value assessments based on climate and existing insulation.</p></div>

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Verified Reviews for Doorbell Installation pros in Prague, OK

*The Angi rating for Doorbell Installation companies in Prague, OK 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 Prague, OK 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 09, 2026

Reviewed in May 2026
We have been very pleased with the work that Clemmons Home Care has provided for us. They have painted our kitchen and built in cabinets, and have also installed a sliding barn door in our master bathroom. We will be using Clemmons Home Care for future projects.
Clemmons Home Care Services
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Reviewed in December 2025
Removed old mailbox and replaced and installed a new mailbox. They arrived and completed the job in a timely manner and hauled off the old mailbox and the debris left over. I would recommend and hire them again.
Elite Services
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Reviewed in July 2025
Mike Freeman was fantastic to work with. He helped me design the yard I was hoping for. Installation was quick and communication was great. Any questions I had were answered promptly. I would highly recommend this company! Thanks Mike for the beautiful landscaping!
Freeman's Landscaping
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Reviewed in April 2024
Quick and easy going installer
West Shore Home Indianapolis
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Reviewed in June 2023
Mr. Rhodes and his daughter, Tara, came to our home to give a free estimate on replacing the front windows on our house. After receiving the estimate, we thought it was so reasonable so we asked for an estimate for all of our windows. They replaced all of our windows last week. Bob and Tara were...
M. Rhodes Company LLC
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Reviewed in June 2022
We just moved into our first house, a new build. The owner came out, he installed the opener fast as well as replaced some things that we had no clue that definitely needed to be fixed and helped educate us. He was amazing! Thank you again!!
Total Door Solutions
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Reviewed in July 2021
Adam came and installed a new fence around my lot, excellent service, good quality material, he is extremely professional, and a really good price, I strongly recommend his service.
Deep South Fencing and Specialty
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Reviewed in April 2021
They came in worked hard and did a very good install
Advantage Heating & Air
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Reviewed in April 2019
All information was upfront and explained well. The installation could not have gone better. I love this system so far. Financing was a breeze with a great % rate. Install was made 3 days after signing...so impressed.
Kinetico
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Reviewed in February 2019
Adding new line from house to garage and installed a new water heater. He showed up when He said he would and completed the job in a shorter time than it should have. Did a great job and very friendly. I Will be calling him back for more work.
Aqua Plumbing Services
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Doorbell Installation questions, 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.

While there are many different kinds of insulation, spray foam, blown-in, foam board, and batt and roll are the four types you’re most likely to see. That doesn’t mean they’re alike, though. Each one varies drastically in terms of cost, materials used, and how they’re installed—not to mention, how well they limit heat transfer.

It’s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat.

Bubble wrap is better for moving since it can be cut to size, whereas dish foam comes in precut sheets that are harder to manipulate. However, if you’re packing items like dishes, wine glasses, picture frames, or mirrors, dish foam will protect them better. Ensure you measure your box beforehand so you know what size dish foam to purchase.

Through R-value assessments based on climate and existing insulation.

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