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>

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>

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>

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Last update on May 20, 2026

Reviewed in May 2026
Great work and prompt. The work done was actually installing new well pump and rewire. They had my well back up and running quickly and kept me informed of the progress. Price was reasonable.
Pride Services, LLC
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Reviewed in October 2025
We had Ryan come out and install a privacy fence and chain link fence in our front yard. The quality of work done was phenomenal. We are so happy with our new area. Very kind and professional as well. Will definitely call for my next fencing project.
Fulcher Enterprises, Inc.
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Reviewed in March 2025
Chandler and the owners installers did an incredible job, very cautious and careful at the same time very sympathetic with us and our situation.
Crawlspaces And More
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Reviewed in August 2024
Did great work, showed up on time as promised. I had two ceiling fans installed.
REDSTONE ELECTRIC LLC
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Reviewed in May 2024
Austin did an awesome job, he was on time and provided a professional install. He makes sure the customers experience is second to none. I highly recommend using Snellings Contracting LLC for any of your electrical needs!
Snellings Electric
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Reviewed in April 2024
They installed drywall and laminate flooring. After Mike Flaker secured all the money from my insurance for putting in the flooring and drywall, this is what my family was left with. He never came back to finish the job nor returned any calls from my insurance or myself. UPDATE: Mr. Flaker...
Flaker Flooring, LLC
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Reviewed in April 2024
They seem to be very well established and did a very good job on installing our tub / shower. If I am very interested in an interview and having my aunt's put one into
Premier Home Pros, LLC
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Reviewed in November 2023
Hired them to install a self purchased water heater and accessories. Did a great job and were very professional.
Next Plumbing
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Reviewed in October 2023
Derek was prompt in getting to our problems and his prices very fair. He installed two new sprinklers and moved some other around for me. Highly recommend. Also installs Christmas lights and landscape lights.
Clean Cut Landscaping and Irrigation, LLC
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Reviewed in September 2023
Had a great experience from beginning to end, installers were professional and courteous.
West Shore Home Greenville
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Doorbell Installation questions, answered by experts

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.

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.

Monolithic slabs don’t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.

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.

Yes, including recycled denim and cellulose from natural fibers.

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