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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*The Angi rating for Doorbell Installation companies in Wakefield, 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 December 02, 2025

Reviewed in December 2025
Big Dave and his helper installed a 50 gal LP gas Hot Water heater at my residence on Nov.26, 2025. He picked up the Heater and all necessary equipment needed to install and disposed of the old one. He arrived at the time he said he would and was very neat in his work as evidenced by covering...
Big Dave's Plumbing Service, LLC
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Reviewed in February 2025
We just had a roof replacement through Home Genius Exteriors with Mark Johnson as the Project Manager. I found Mark to be very knowledgeable and the project proceeded exactly how he said it would. Everyone we had contact with on the project were very courteous and respectful including the...
Home Genius Exteriors
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Reviewed in December 2024
They were promptly , courteous, and very pleasant. They explained the system and how it worked. The system was installed quickly and is up and running. I would recommend this company.
Number 1 Water Solutions
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Reviewed in August 2024
Joe, Mark, and Their Team did a Splendid Job for Us on this Business Phone Line Install. There are Very Knowledgeable and provided the Needed Assessment and "Fix" in a Very Timely Manner. I Highly Recommend Accent Tel USA! God Bless You! Philippians 1:3-6! Have a Wonderful Day in the...
Accent Tel USA
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Reviewed in June 2024
Green Elites installed stone around my inground pool. The work was impeccable. They were thorough, timely and did the job as they promised they would. They showed up each day and cleaned up each day. They also installed a flower bed border. The quality of work and price could not be beat! Med...
The Green Elites Landscaping, LLC
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Reviewed in August 2022
I am very happy with my privacy fence. The workmanship was outstanding. Very dependable and the fence was installed quickly. I highly recommend S and J Fencing.
Marshall Family Enterprises LLC
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Reviewed in April 2020
Workers were very professional and courteous. They were fast. Install was completed in a day. Clean up after and explained what was done. Highly recommend this company
Russell's American Mechanical
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Reviewed in June 2018
ADT installed a comprehensive system in my house that is able to be monitored, armed, disarmed and initiated from several different locations in my house and from our cell phones. We are pleased with the protection that ADT affords our house (entry, fire, remote monitoring and on-site cameras)....
Alarm Protection Group
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Reviewed in April 2018
All went just fine. The technician checked to ensure all required updates were installed for both software and hardware. He was courteous and very professional.
COE Computer Repair & Service LLC
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Reviewed in January 2017
Castle was always here on time and performed the work through the contractors exceptionally well. The second set of windows were installed by the same contractors and mostly the same crew from the previous year. Service after the sale was outstanding as well when we needed a replacement pane of...
Castle "The Window People"
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Doorbell Installation questions, answered by experts

When installing board and batten siding, make sure there is wall sheathing and a moisture-resistant barrier installed. Behind that sheathing should be plywood or OSB for you to nail the boards and battens into. If there isn’t plywood or OSB, you can install vertical furring strips at 1½- to 2-foot intervals to nail the boards and battens to.

In addition to adding insulation to your attic, you may want to add a radiant barrier. A radiant barrier works by using reflective material, such as foil, on the attic floor. As heat penetrates the roof and enters the attic, the radiant barrier reflects the heat upward and back through the roof. If you receive a lot of direct sunlight on the roof, using both a radiant barrier and insulation in your attic can provide significant benefits.

Installing insulation helps reduce energy usage, improve home comfort, and lower utility bills by maintaining stable indoor temperatures year-round.

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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