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>

Does insulating windows with plastic work?

• <div><p>Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and <a href="https://www.angi.com/articles/how-to-caulk-windows.htm">caulking your windows</a> to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.</p></div>

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Last update on March 20, 2026

Reviewed in March 2026
Thank you Paul for assisting me with my new flooring purchase and install of 3AQUACORE XL 9"X72"X8MM EIR. As I am aware this flooring is made for Busenbark. My installer was a 10+ and great to work with. He installed Living Room, Dining Room and bathrooms. He was careful with items in the home...
Busenbark Carpet Inc
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Reviewed in January 2026
Randy and crew arrived and installed new storm door and front door on front of house. They also installed new French doors in place of our old sliding glass doors downstairs. Loved the work.
Power 2 Construction & Remodeling
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Reviewed in April 2025
Gaven did excellent work installing an aluminum railing and a new set of stairs for my deck.
Bell's Carpentry & Construction
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Reviewed in February 2025
I hired Mr. Bell to install some kitchen cabinets at my cabin on the lake. He very professional and his workmanship is top notch. Showed up on time and his installation price was more than fair. Definitely would hire him again.
Bell's TrimWork
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Reviewed in June 2023
Ethan Crocker and crew have done repairs and complete roof installation on two different storm damages in two years. If quality, integrity,work ethic, and good communication are important to you, you need look no farther. I will recommend to all my family and friends.
Direct Contractors, LLC
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Reviewed in July 2021
The crew did an excellent job. I was highly satisfied with the septic system they installed and the clean up that followed. I highly recommend this company. Bill Boyd
Ross Contractors LLC
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Reviewed in June 2021
Easy to work with and Did a great installing our new door.
Elite Overhead Doors, LLC
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Reviewed in June 2021
Our sales person Kirk was extremely knowledgeable and even went over ways that we could combine two windows into one in order to save money on our large project.. This suggestion actually created an impressive look that both my husband and I LOVE and havenâ t stopped commenting on since the...
Universal Windows Direct of St Louis
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Reviewed in June 2020
Had a bathroom install in basement. I got a competitive bid, quick start time, and they listened to what I wanted and did it well! He also responded well to email or text and was easy to communicate with. I would defitely hire them again for remodeling projects in the future!
Grace Renovations, LLC
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Reviewed in June 2020
Had this company come out and repair an land line problem that was not our problem but ATT, no cost. Brought them out again in a timely manner to install a 55" flat screen tv to a wall mount. Work done timely and efficient. Saved the best for last and had closed circuit television system...
Prestige Technology, LLC
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Doorbell Installation questions, answered by experts

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.

According to a report from Energy.gov, radiant barrier installations can save between 5% and 10% on your energy bill each month that your HVAC cooling is in operation. That fact can mean savings of up to more than $325 per year for homes that experience frequent direct sunlight and high summer temperatures.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

Costs depend on area size, material thickness, and site preparation needs.

Adding insulation to ceilings is an excellent way to increase the energy efficiency of your home. If your home's layout is such that you need insulation in the ceilings rather than in the roof, it's likely that at least some insulation already exists in the space. However, each additional inch of insulation you can add boosts the R-value by between 2.2 and 4.2.

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