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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*The Angi rating for Doorbell Installation companies in Narrows, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Doorbell Installation needs.

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Last update on August 19, 2026

Reviewed in August 2026
Matthew installed a new well pump. He did an outstanding job, even though technical difficulties were encountered. He persisted and got the job done. I will definitely hire him again. He is honest, prompt, and definitely knows what he's doing.
Providence Construction
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Reviewed in February 2026
Super easy to work with, kept us informed, shared photos with us while we were 1000 miles away. Did an absolutely amazing job, even installed additional exhaust vent for us. I can't say enough how much we appreciate Noah and rest assured should we have any needs we will be reaching out to him....
Cornerstone Renovations WV LLC
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Reviewed in October 2024
Had my kitchen updated. Everything from cabinets to flooring and everything in between even including the installation of new appliances. CouldnÃ Â¢Ã Â Ã Â t have asked for a better job done!! The professionalism well exceeded my expectations! I would HIGHLY recommend this company! LOVE MY NEW...
Appalachian Fix-It
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Reviewed in June 2023
Great it was a fast install
B&J Energy Savers
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Reviewed in March 2023
This company was quick to respond got the job done in a timely manner ! We are 100% satisfied and would highly recommend this company . Installed outlets for outdoor areas Complete electrical installation for game room Garage and gym . Light fixtures and electrical work in home and outdoor
East River General Contractors
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Reviewed in December 2022
Chad quoted our project and he was knowledgeable about the design and materials needed for our fence. The team showed up on time and installed the fence in two days. They made sure everything was cleaned up before leaving. Outstanding customer service and communication. Thank you!
Chad Hall Landscaping & Fencing
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Reviewed in July 2022
He installed dishwasher, new faucet in kitchen sink, leak in bathtub, replaced light bulbs in light I could not reach, put in a new kitchen floor. I called on him for most all repairs while renting the unit.
Stonie Creek Services
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Reviewed in May 2022
Crawl space insulation was removed due to a water leak. Setting up an appointment for replacement was quick and easy. it was a small job but necessary nonetheless. Installers arrived as scheduled and were professional and efficient. Great job!
Home Insulation Experts, Inc.
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Reviewed in August 2021
Jeremiah is one of the most nice and fully capable water men in thei business we loved the product the great service amazing instal and helped with all my other plumbing I would hire them In a minute
Advanced Water Treatment, Inc.
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Reviewed in December 2020
Wonderful experience. The technician (Daniel) who installed my walk in shower was super. Polite, answered my questions, Well qualified to do the work, worked tirelessly for most of the day. All problems/issues were resolved. The rest of the team(schedulers, office people, the person who signed...
Bath Fitter of Southwest Florida
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Doorbell Installation questions, answered by experts

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

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.

Reflective and high R-value batt or roll insulation are often considered energy-efficient, offering significant thermal resistance benefits.

Reduces energy costs, improves comfort, and prevents ice dams in winter.

DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.

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