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 Columbus, MS 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 April 15, 2024

Reviewed in April 2024
I had Mike Ewing and Casey Dinubilo as electricians at my home to install a new subpanel in my garage as well as to troubleshoot a few other items. I must say that they were both amazing people. They were kind, competent, and accommodating during their visit. The work they accomplished was done...
Mike's Mechanical
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Reviewed in April 2023
Excellent service, from the pre-order and measurements, delivery as predicted, and professional install. We ordered fabric roll-up hurricane shades that serve as both blinds for every-day use watching tv and also hurricane protection on large picture windows in our living area. They look...
ROLL-A-GUARD
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Reviewed in April 2020
Ellis Woodworks did an outstanding job in designing and building our cabinets for our new home. Wayne Ellis spent time with us and helped us with decisions on design and functions of each set. He had many examples for us to view and envision the final product. He and his team worked with our...
ELLIS WOODWORKS
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Reviewed in January 2020
Larry Brownlee came quickly to see the project. He gave us the best low cost solution. He ordered the new motors and parts and two days later installed them. On a Saturday morning!! Larry is polite, professional and efficient.
LDB Doors
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Reviewed in March 2019
Very efficient and took time to explain everything and left quote for sealing everything and installing a UV light for filtering dust particles. Have a bi-annual contract with them. Works great! Recommended!
MightyServ
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Reviewed in July 2017
They came out and decided what size unit I needed. Then they took out the old unit, installed new duct work and installed the unit. Totally professional and courteous. Their choice of units reduced my electric bill by over $200 a month.
TRIANGLE AIR & ELECTRIC INC
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Reviewed in May 2015
The salesman explained everything very well. He set up the delivery and installation, and the installers came within two days. They were quiet, neat, and made sure everything was done well.
Sears Roofing
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Reviewed in December 2014
Repairman was on time and checked out the problem. Had to order the photo eyes for my garage door. Came back 2 days later and installed. Door works great. <br />
S & K Door and Specialty Co Inc
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Reviewed in December 2014
He was great and quick , but I thought he was really expensive. I paid 225.00 and he didn't even have to install any parts. I don't know if I could afford Mr Boyle for a major job.
Boyle Heating and Cooling
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Doorbell Installation questions, answered by experts

Fiberglass is the best insulation for HVAC ducting because it's inexpensive, widely available, versatile, and long-lasting. Fiberglass also offers acoustic insulation in addition to thermal insulation, which can contribute to a more peaceful home environment. You can use other materials like mineral wool, but fiberglass is the industry standard.

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.

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

Minimal maintenance is required, though regular inspections to ensure insulation hasn't shifted or deteriorated can improve performance over time.

It's essential to use insulation materials specifically designed for air ducts. Common types of duct insulation materials include fiberglass, foam board, and reflective foil. These insulation materials have the right properties to withstand the temperature and airflow conditions within the ductwork. Using the appropriate insulation not only ensures efficient temperature control but also prevents potential safety hazards or the release of harmful particles into the air.

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