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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Q: Is it OK to put plywood over insulation in an attic?

• <div><p>Installing sheets of plywood over <a href="https://www.angi.com/articles/attic-insulation-guide.htm">attic insulation</a> is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air&mdash;so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. </p><p>It&rsquo;s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you&rsquo;ll need to install a subfloor before putting plywood over insulation in your attic.</p></div>

Q: What are the benefits of insulating the attic?

• <div><p>Reduces energy costs, improves comfort, and prevents ice dams in winter.</p></div>

Q: Should all interior and exterior walls be insulated?

• <div><p>While insulation is required for all exterior walls in a house, it is not typically required for interior walls. Local and state building codes mandate that new construction homes have adequate insulation in exterior walls and ceilings to suit the local climate.</p><p>However, there are several benefits to adding insulation to interior walls. It is excellent for sound-dampening between rooms and can help with temperature control by maintaining a regulated temperature in specific rooms and lowering heat transfer between adjacent areas. Insulating interior walls can also contribute to the overall energy efficiency of your home.</p></div>

Q: How much difference does insulating a basement make?

• <div><p>Heat lost through uninsulated basement walls can account for up to 30% of the total energy lost through heat transfer to the outdoors. While homes in mild climates won't gain as much benefit from having an insulated basement as those in cold climates, the effects are still noticeable on your energy bill.</p></div>

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Verified Reviews for Doorbell Installation pros in Altheimer, AR

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

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

Last update on November 08, 2025

Reviewed in November 2025
Came and looked at a challenging project of installing a new shower kit from the floor up, and a new water heater installed. Excellent job done, and inside the amount quoted !
L&L Services LLC
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Reviewed in September 2024
Excellent, job well done in reasonable time and cleaned up afterwards.
MHC Roofing and Construction
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Reviewed in July 2023
Construction, LLC's customer service team was prompt in their responses. They were always available to assist us and provided solutions in a timely manner.
All Country Construction, LLC
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Reviewed in March 2023
The project was in a timely manner and professionally done. I was very pleased.
Latham land management
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Reviewed in October 2022
I had over my place to replace old water heater. Have got an excellent service from him.I would recommend everyone to try his service. Thumbs up ð
Leak Troopers
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Reviewed in March 2017
Brent Strout from Foundation Pro showed up on time and went to work right away assessing the floor slope. He found only a slight change in the floor slope and found what he called a soft spot in the floor where the boards were (now slightly) buckled. He then went under the house and took several...
Foundation Pro
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Reviewed in August 2013
Wow, where do I begin. Kudos to Nicholson Heating and AC. My needs requirements were met and exceeded. <br /> The company customer image is very tidy, clean-cut and professional looking. Crew, vehicles and equipment showed pride in their appearance. This company was the only company out of the...
Nicholson Heating & AC
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Reviewed in April 2013
THEY ARRIVED FROM ROYAL, AR WITH 2 VEHICLES, PLENTY OF WORKERS and SET ABOUT REMOVING THE OLD WINDOWS, MODIFYING SOME OF THE OPENINGS and INSTALLING THE VINYL DOUBLE PANED WINDOWS. THEY CHATTED AS THEY WENT and EXPLAINED WHAT THEY WERE DOING. THEY WERE OPEN TO MY INPUT and DID EVERYTHING...
Royal Windows & Siding
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Reviewed in April 2013
FROM ESTIMATE, TO THE REMOVAL & DISPOSAL OF THE OLD UNIT, TO THE INSTALLATION OF THE NEW CENTRAL HEATING & AIR UNIT & THERMOSTAT----ALL WAS PROFESSIONAL & PLEASANT. WE HAVE HAD 1 PROBLEM. ABOUT 1 YEAR AFTER INSTALL THE DRAFT INDUCTION MOTOR WENT OUT. THEY REPLACED IT WITH NO LABOR OR PARTS...
SCOTT SYSTEMS INC
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Reviewed in April 2013
I DID NOT HIRE THIS COMPANY DUE TO THE AWFUL WAY I WAS TREATED BY JOE PULLMAN'S SON, JOEY PULLMAN, THE ROOFER RESPONSIBLE FOR MY ESTIMATE and THE JOB. WITH THE EXCEPTION OF THE MISSING AGREEMENT TO INSTALL THE WHIRLYBIRDS WHEN ROOFING AT NO CHARGE, THIS COMPANY HAD THE MOST PROFESSIONAL...
Joe Pullman Construction and Roofing
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Doorbell Installation questions, answered by experts

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home.

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

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

While insulation is required for all exterior walls in a house, it is not typically required for interior walls. Local and state building codes mandate that new construction homes have adequate insulation in exterior walls and ceilings to suit the local climate.

However, there are several benefits to adding insulation to interior walls. It is excellent for sound-dampening between rooms and can help with temperature control by maintaining a regulated temperature in specific rooms and lowering heat transfer between adjacent areas. Insulating interior walls can also contribute to the overall energy efficiency of your home.

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.

Heat lost through uninsulated basement walls can account for up to 30% of the total energy lost through heat transfer to the outdoors. While homes in mild climates won't gain as much benefit from having an insulated basement as those in cold climates, the effects are still noticeable on your energy bill.

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