Should I remove old attic insulation before adding new?

• <div>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: <ul><li>If the insulation is over 15 years old</li><li>If the insulation is wet or moldy</li><li>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></li><li>If you see signs of pest infestation</li></ul>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</div>

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Verified Reviews for Doorbell Installation pros in Onamia, MN

*The Angi rating for Doorbell Installation companies in Onamia, MN 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 Onamia, MN 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 March 11, 2025

Reviewed in March 2025
These guys are absolutely awesome! We had a cracked heat exchanger and it was dangerous to continue heating because of carbon monoxide leaking. The original duct work was all done incorrectly and caused the furnace (and A/C} to overwork. We had their representative, Danny come to our house one...
Total Comfort Heating and Cooling
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Reviewed in January 2024
No mess was left behind after completing the install. Process was quite seamless. I would hire Richard again for future projects.
Brown's LLC
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Reviewed in May 2020
David Kottke came to do our annual inspection for the waterproofing job on our basement. It was the first inspection since we bought the property and he explained everything that had been done and answered all of our questions. We inquired about a battery back up on our sump pump and he was able...
Groundworks
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Reviewed in May 2020
We bought this property last year and this was our first inspection-David Kottke did a great job explaining to us everything we have going on. We inquired about a battery back up on our sump pump and he was able to install it on the spot! Great work!
Groundworks
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Reviewed in November 2019
The owner is very professional, sells a top quality product, and does a professional job of installation. I am also confident he will stand behind his product and work.
Rny Day Service, Inc.
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Reviewed in October 2019
Great service and very good group of installers. They did a great job and did it quickly. Very fair on Price. Joe was a pleasure to work with. I highly recommend these guys. Thanks again guys. Jeff Nelson, Isle, Minnesota
Ferrara's Heating, Air Conditioning and Refrigeration, Inc.
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Reviewed in December 2018
Steve designed a new Combi-Boiler System to replace an old water heater set-up used for DHW and in-floor heat. This is a much more efficient system and the installation was very professional and aesthetically pleasing to boot. He also came up with a relay setup so the thermostat in place would...
Anderson Aire
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Reviewed in June 2018
Showed up on time and invoiced amount was the same as quoted amount. Did a great job installing water heater and dishwasher.
Dusty's Drain Cleaning
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Reviewed in May 2017
Extremely expensive, excellent quality but do not question there work and make sure you pay close attention to what you agree to have done and what actually is done. When you receive your call to set up an appointment for your estimate you will be told any estimate is good for 18 months but when...
Your Home Improvement Company
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Doorbell Installation questions, answered by experts

Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated.

Cellular shades, also known as honeycomb shades, are the most energy-efficient and insulating window treatments. Their honeycomb structure is made of soft fabric that forms layered cell pockets. These pockets trap air, creating a thermal barrier that reduces heat loss in the winter and blocks heat gain in the summer. For even greater insulation, consider double- or triple-cell varieties. Side-tracked cellular shades, which seal the edges of the window frame, can further minimize air leaks and maximize energy efficiency.

Depending on where you live and the conditions of your basement, you may not need to insulate your basement. Your best bet is to talk to a basement remodeling company to find out what they recommend doing.

Insulating your basement can help improve your home's energy efficiency, but it will also increase the cost of your basement remodel project. The average cost of installing basement insulation is $2,400.

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.

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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