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>

Does the paper on insulation go in or out?

• <div><p>If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process. </p><p>A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.</p></div>

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Last update on September 05, 2026

Reviewed in September 2026
Left the place so you never knew they had been there. New windows installed in 2.5 hours. Professional.
Joyce Windows, Sunrooms & Baths of Asheville/Greenville
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Reviewed in June 2026
Our installer (Micah) was par excellent! He explained what he was doing and why. He was on time, worked independently, kept us in the loop and cleaned up after himself. A pleasure to have him complete the job!
Palmetto Home of the Carolinas LLC
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Reviewed in June 2025
Robby Was great installing a wall mounted television…the BEST!!!
Audio Video Specialists
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Reviewed in October 2023
Devin N and Charlie R. Did a great job on the door installation!
West Shore Home Greenville, SC
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Reviewed in June 2023
great job building and installing a new back kitchen and bathroom vanity
Tavares Custom Cabinets
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Reviewed in February 2023
My consultant, Jamie Duncan, was great! Any time I had a question, he was quick with an answer. When I had trouble signing into my installation portal, he help facilitate communication with the company! Such a pleasure to work with!
KR Solar
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Reviewed in May 2022
Superior installation, above and beyond the average knowledge.
Twisted Links Fence Co LLC
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Reviewed in February 2022
very efficient installation -- one day and they were through , pricey but prompt and kept me informed when there were delays because of weather
Quantum Roofing
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Reviewed in January 2022
Bought an older house that had been redone quickly & flipped. A real head scratcher as to why it was constructed in certain ways. Found Devin & Perry who helped us take care of all the issues we needed to make this home functionable & homey including: building a new set of stairs for a second...
CTE Builds
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Reviewed in February 2021
The quality of the garage door was very good. The installation went smoothly. We are very happy with the finished product.
Magnolia Garage Door Company
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Top-Rated Doorbell installation pros in Cedar Mountain - Updated Nov 2026

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Doorbell Installation FAQs, 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.

The best type of insulation for your home depends on your specific needs, climate, and the area you are insulating. For new construction, structural insulated panels are a highly energy-efficient option that is easy to install during the building process. In very warm climates, reflective insulation can be a cost-effective choice. For cold climates, fiberglass is an excellent option due to its high R-value and resistance to settling over time. Spray foam works well in humid environments because of its moisture-resistant properties. For standard attics, loose-fill, spray foam, or blown-in insulation are all suitable options.

Experts use advanced techniques and tools to assess existing insulation levels and identify gaps. They implement strategic placement of new insulation to ensure complete coverage, optimizing thermal resistance and energy efficiency.

If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process.

A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.

Yes, they address underlying issues, providing long-term seals and energy savings you might need help to achieve.

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