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>

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 July 30, 2026

Reviewed in July 2026
Very quick to help. Professional, courteous and kind. Would hire again in a heartbeat and recommend to anyone needing this service!
LIPINSKI Plumbing HVAC Company
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Reviewed in May 2024
We contacted Matt to install an EV charger and a ceiling fan. Matt responded right away and scheduled an appointment. Matt showed up at the scheduled time and got right to work. We had previously had Oak Ridge do the electrical for our solar project. Both times work was done professionally. Oak...
Oak Ridge Electric, LLC
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Reviewed in August 2023
Very knowledgeable on hvac saystems. They installed a new furnace, a/c, electric filter, humidifier, heat exchanger and a uv light to kill germs and bacteria. This was a pretty big job and took extra effort. They stayed until after 8:00pm on a Friday night to finish the job and make sure...
Buckle's HVAC Solutions
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Reviewed in May 2023
The general contractor, moving company recommended, flooring installers, painter, and plumber were all absolutely amazing. They were professional, communicated every step of the way, on time, efficient, and their work is beautiful. I recommend each of them at the highest of level. Iâ ve...
Holtzman Remodeling, LLC
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Reviewed in April 2023
It went great very caring and thorough work. The house looked and smelled amazing. We are having them back to clean the windows inside and out in May. Completely happy with the attention to detail and professionalism. Very personable and willing to go above and beyond our expectations. ...
B3 Cleaners
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Reviewed in September 2022
Jared is my go to guy I count on! He has done many projects for us at multiple locations including siding, replacement windows, drywall, flooring and repairs. He is always reliable, courteous, hard working, and above all does impeccable work. We highly recommend Rising Ridge Construction LLC ...
Rising Ridge Construction LLC
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Reviewed in March 2022
Evan is super honest, pleasant, knowledgeable, and skilled. I have known him for six years. I appreciate that I can call on him to help with a wide variety of tasks. (Painting, changing filters, installing water filtering system, moving furniture, installing shelving units, repairing damaged...
Nice Job!
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Reviewed in June 2019
He was fast to contact us and give us a bid. (Next Day). Job was done very fast and very good. Cleaned up afterward. Contacted him on Sunday. Called and gave bid on Monday. We gave him our OK on Tuesday. Started job on Wednesday and finished early Thursday afternoon. This was old...
Blackhawk Contractors, Inc.
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Reviewed in April 2017
Tom is an extremely knowledgeable and honest person who has a wealth of experience. We have an old farmhouse with original wood siding, much of it rotted and not a single 90 degree angle on the house. Also our roof was suffering from many ridge top shingle blow-offs and was in need of repair. He...
TOM GEIER CONSTRUCTION
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Reviewed in March 2014
Excellent. I love that you are able to purchase high end appliances close to home. The service provided is over the top. I love the one on one, no big store service! They know you by name! When they came to the house to install/setup our new appliances they were very professional and friendly. ...
MITBY'S TV & APPLIANCE
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Doorbell Installation questions, answered by experts

They recommend sustainable materials and water-saving fixtures, tailoring choices to balance sustainability and style.

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.

Fiberglass is considered a favorite garage insulation choice due to its combination of affordability, ease of installation, and overall effectiveness. Fiberglass provides good thermal resistance, helping regulate garage temperatures and minimize heat transfer. Additionally, fiberglass is moisture-resistant, reducing the risk of mold or mildew formation.

Air sealing isn't necessary for attic insulation, but it's incredibly helpful since it can help you identify and patch any existing air leaks. Failing to find these leaks before adding insulation can render your insulation less effective, leading to higher energy bills and potentially costly repairs 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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