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 Tranquillity, CA 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 July 01, 2024

Reviewed in July 2024
They did an excellent job installing my Goodman Central Air Unit including the clean up. They came out and explained the process of the installation whereas I understood everything. Everybody was friendly, including the Receptionist Lisa. I would recommend their service. Thank you.
King David's Construction Company, LLC
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Reviewed in April 2023
Jessie was the installer and he was very courteous and cleaned up after he completed his work.
Living Water Company
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Reviewed in October 2022
JNR Electric is our new “go to” electrician for ALL of our electrical needs. Javier and Nick arrived on time with every tool and all products needed to complete our job in the most professional manner. They installed 19 canless lights in 4 different rooms and worked diligently throughout an...
JNR Electric Corporation
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Reviewed in March 2021
I hired Jaime and his team at New View Roofing to repair a leak in my tile roof. They quickly identified and fixed the issue and performed value maintenance on the roof valleys, his team re-roofed my patio and installed rain gutters. The customer service, craftmanship and professionalism is top...
New View Roofing
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Reviewed in June 2018
Kevin Manning and Andrew Aleman did an amazing job installing and explaining our new air conditioning system. Very polite, professional, and clean. We are very pleased with our choice to contract with Lees Air Conditioning.
Lee's Air, Plumbing, & Heating
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Reviewed in April 2016
My son and I installed new light switch in my garage. Thought we solved problem, only to find out other lights in the house were not working. Checked and tested breakers, the all seemed fine. Not sure what to do, so I called Scotties electrical service. He asked me to describe what my son and I...
Scotties Electrical Service
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Reviewed in March 2012
I was happy with what he did. He noticed that our furnace was installed incorrectly and was leaking carbon monoxide into our house. He was able to fix that and essentially saved our lives.
Advanced Heating & Air Conditioning
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Doorbell Installation questions, answered by experts

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.

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.

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

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.

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.

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