Should wall insulation be faced or unfaced?

• <div><p>Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.</p><p>Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.</p></div>

Should I remove old attic insulation before adding new?

• <div><p>Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation: </p><ul><li><p>If the insulation is over 15 years old</p></li><li><p>If the insulation is wet or moldy</p></li><li><p>If it is <a href="https://www.angi.com/articles/what-is-vermiculite-insulation.htm">vermiculite insulation</a></p></li><li><p>If you see signs of pest infestation</p></li></ul><p>Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.</p></div>

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Last update on April 21, 2026

Reviewed in April 2026
The process was easy, Mike Sedillo was great ,explaining and taking me thru the steps. The windows are great and the team installing them was quick and efficient ！
Home 2 Renovate, Inc.
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Reviewed in September 2025
The best part of my garage door opener replacement is the quiet operation. I can open and close the garage without disturbing anyone. The installer was polite and efficient.
Garage Door Santa Ana, CA.
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Reviewed in July 2024
Quick and easy process. He did a great job with my request for camera installations!
Marwan the Handyman-Unlicensed Contractor
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Reviewed in January 2024
I had spent a bit of time on my end investigating alarm systems first. An ADT monitored system with some smart home features is what I ultimately decided on based on price and functionality. So I called Safe Home Security. They asked some questions about our home and what we wanted, I explained...
SafeHome Security
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Reviewed in November 2023
Entire project from quote to installation of an off-size door took a week. Service was great, Daniela and Henry were both very helpfull
Ocean Coast Garage Doors
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Reviewed in September 2023
Clean and neat install. Good communication.
Quality Coat, LLC
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Reviewed in January 2023
Prompt response and installer is very good answering all the questions
Speedy Garage Door and Gate, Inc.
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Reviewed in October 2021
Rob did great job for install my new Genie garage opener, nice and professionally.... I will use his service for my several rental properties if needed. Nick Chen
Shoreline Garage Door Service
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Reviewed in September 2021
The completed installation was neat and professional, as expected from a local company that has serviced the community for many years.
Bill Metzger Plumbing
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Reviewed in July 2021
Great job from sales to installation. Kudos to all.
Hague Quality Water
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Doorbell Installation questions, answered by experts

Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.

Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

Reflective and high R-value batt or roll insulation are often considered energy-efficient, offering significant thermal resistance benefits.

Ideally, you can add new insulation to your existing insulation. However, some circumstances require you to remove old insulation before adding any new insulation:

If the insulation is over 15 years old
If the insulation is wet or moldy
If it is vermiculite insulation
If you see signs of pest infestation

Removing old insulation is best left to a pro who can safely dispose of potential moldy or asbestos-ridden insulation.

Insulating windows without plastic is usually the better method. Outside of simply replacing your windows, you could buy cellular shades, which trap air between the window and the home, add a window film that blocks UV rays and traps heat, or cover your windows with a low-emissivity coating called “low-E.”

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