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>

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>

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Last update on March 03, 2026

Reviewed in March 2026
They did a fabulous job. They arrived right on time , did the job fast and professionally and cleaned up all the mess. I will be calling them again next year and every year. The price was great and the job they did was fabulous.
LM TREE SERVICE
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Reviewed in December 2025
He was prompt, fast and cheap.
Pro Tech Garage Door
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Reviewed in October 2024
Alcantar Construction is fantastic! They are honest, reliable, timely, and their workmanship is excellent. We will call them first any time we need help with a project. Thank you!
Alcantar Construction
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Reviewed in September 2024
Arrives when he says he will. Sticks with quoted price. Does wonderful job and always does more than he has to.. Finishes job and is pleasant to work with.
EXTERRA CONSTRUCTION INC
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Reviewed in September 2024
Really a great guy we couldn't unblock glog as it was beyond our reach was there for hours didn't want to take fees since It wasn't cleared, something we don't see often these days
Hooskers Handyman Services - Unlicensed Contractor
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Reviewed in May 2022
Monty is an excellent craftsman. He is very attentive to detail and goes the extra mile to make the project right. He remodeled our master bathroom and also our kitchen. We are so please with how everything turned out. He was very easy to communicate with and offered many excellent...
Monty Clifton Construction
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Reviewed in April 2022
Very professional, reasonable, trustworthy. Beautiful job. I would highly recommend this company for all your electrical needs.
D-Bac Lighting and Electric Inc
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Reviewed in August 2021
George was on time and assisted with material selection. The outlined repairs were completed in a timely manner and they cleaned up the work area before they left . Extremely Pleased and I will use them again.
GNA Painting and Maintenance-Unlicensed Contractor
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Reviewed in June 2021
Prompt service, clear explanations, all questions answered, no hype. like a good neighbor, friendly, helpful and professional. The new HVAC unit is highly rated and a good buy. I recommend this company to anyone looking for honest, and professional service. These are the go-to guys for HVAC in...
All Valley Heating and Air
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Reviewed in June 2021
The service was excellent. They were fantastic. I like the result of their work.
De Paz Cleaning Service
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Doorbell Installation questions, answered by experts

Natural fiber batts and spray foam insulation both work great for soundproofing. Newer materials, such as hemp batts, are more expensive but more effective for insulation and sound blocking. They are also more sustainable. There is also a professional system called Blow-In Blanket Insulation (BIBS) that is soundproof and moisture-resistant. However, BIBS must be installed professionally and can be a costly investment.

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.

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

Spreading tin foil over your windows works similarly to radiant barrier insulation, but not as well. It will reflect some of the sunlight that would otherwise come through the glass and warm up the inside of your home, so it might help a little to keep your home cool in the summer. However, the appearance isn’t preferable to blinds or drapes that can offer the same benefits. You might also consider tinting your windows instead, which is a more aesthetically pleasing change that can still block a good portion of the solar heat coming through your windows.

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.

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