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 October 09, 2025

Reviewed in October 2025
Needed a panel upgrade to accommodate new equipment being installed in my shop. James from Level Up got the job done fast. Installation was clean. Very professional and easy to work with. 10/10 would recommend.
Level Up Electrical
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Reviewed in January 2025
I used Chuck and Brighton EV to do a panel swap and install an Electric Charger and some other odds and ends like adding can lights. I couldn’t be happier with the experience. Chuck was on time, communicative, professional, and fairly priced. I highly recommend him and his company and he will do...
Brighton EV, LLC
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Reviewed in September 2024
Highest Recommendation! We just had them install a new 4 ton HVAC and retro fit vinyl windows/slider door. Great service from Rep Scott Herold (contact him directly 916-956-2788) to measuring people to installers. Thank you Scott Herold, Skip Hunter, Mike, Bill, Clint, Chris, Jeff and all those...
Northwest Exteriors
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Reviewed in November 2023
I have hired John for several jobs. He has put up a wall for my staircase. He fixed several walls and ceilings where our ceiling fans were installed and the wire was ran. He did the ceiling where our exhaust fan was installed in the bathroom. He installed a closet in our master bedroom also.The...
Backwoods Drywall
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Reviewed in November 2023
This Business is very reputable and honest. Harry is very professional and has alot of experience in the garage door business. He will take time and do the job right. He installed two beautiful garage doors and openers for us seven years ago and we have never had any problems with them. ...
Harry's Garage Doors
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Reviewed in July 2023
Connected Technology met all the above criterions with exceptional good quality - one of the conduits was not EXACTLY parallel to the other one, on the final inspection it was corrected, the value of knowing things are done A to Z without need to intervein is not something I am used to any more....
Connected Technology
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Reviewed in April 2023
The installers Matt W. and Thomas S. were courteous and very professional. They removed the old bathtub and installed a new shower in about six hours. Their work was outstanding.
West Shore Home Lexington
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Reviewed in May 2022
From sales to installation, they did an incredible job with replacing our HVAC system. It was a wonderful experience working with such a great company.
Derek Sawyer Smart Energy Heating & Air, Inc.
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Reviewed in January 2022
The survey, measurement, quote, approval, and install were all super easy, fast, and painless.
Ergeon
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Reviewed in October 2021
Exceptional service and communication. All aspects of the generator install were flawless. The office communicated all phases perfectly and executed the plan as scheduled. The installation team was friendly, professional, knowledgeable and diligent. The team of 3 installers worked like a well...
SHORT CIRCUIT ELECTRIC
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Doorbell Installation questions, answered by experts

Periodic checks for moisture or pest issues ensure consistent performance.

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.

The most affordable way to insulate a garage involves choosing cost-effective materials like fiberglass, which comes in batts or rolls and is relatively easy to install. You can often install this type of insulation without needing to add drywall, which helps reduce costs. While a DIY approach might seem cheapest, hiring a professional installer can be highly cost-effective. Experts can accurately determine your garage's specific insulation needs and ensure the best results for your investment, often using batt insulation for the bulk of the project.

Mineral wool has an excellent life expectancy of up to 50 years, provided it's kept dry and free of pests. Compared to fiberglass, with a life span of 20 to 30 years, mineral wool stacks up well for long-term cost savings. Sheep wool maintains a similar life span to fiberglass, while estimates for hemp wool insulation life expectancies are all over the board, ranging anywhere from 20 to 100 years.

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.

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