Should I remove old attic insulation before adding new?

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

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

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Last update on April 29, 2026

Reviewed in April 2026
Actually, they did a number of projects aside from the shower conversion. They installed windows, a dishwasher, a water heater. They made stairs and railings for my back door and installed a light over the stairs. And they removed the bushes from the side of my house and cleaned up my back yard.
Rising Construction #1
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Reviewed in March 2026
As part of our kitchen update, Tyler painted our kitchen walls and cabinets. The backsplash was previously a custom install that caused issues upon removal. Tyler explained the situation and offered us solutions along with their impact on his quoted price. Everything came out great, on schedule...
Drywall, Trim, Painting
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Reviewed in March 2026
Just had some work done at my house, new ceiling in dining room and new toilet installed by Monroe and More, LLC I highly recommend, ceiling looks amazing! Ray was great at communicating from start to finish and getting back to me with my 900 hundred questions beforehand lol! Definitely will be...
Monroe and More, LLC
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Reviewed in April 2025
Where do I begin? DMC Outdoor Living company has been an absolute pleas to work with. This company has truly been a blessing to our family and our pool needs! This company came in and did a spectacular job in time and with professionalism daily. Mr. David Brakebill (owner) and his supervisor,...
DMC Outdoor Living
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Reviewed in January 2025
How we installed a hot water boiler for me and four mini splits. And we have rentals that Holly has installed for air furnaces for us and central air conditioning units. We are very satisfied with all his work. He does a great job.
Howard's HVAC
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Reviewed in November 2024
I have used this company for many years. Best and most professional. They have installed 6 metal roofs for me, built a back deck, vinyl sided my house and installed windows.
C&D Construction of Western New York
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Reviewed in March 2024
Came & fixed an electric garage door, that had been broken quite some time! They responded very quickly & got the job done right away! Excellent customer service!! We plan on having them come again to install new garage doors! Best in the business!!!
J&T Door LLC
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Reviewed in June 2023
We have had a lot of contractors doing work since we moved to the area last year. Smith Brothers has been the best company we have worked with hands down! They installed a new septic system for us. They went above and beyond making sure they walked us through anything we needed to know and...
Smith Brothers Plumbing & Heating
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Reviewed in January 2023
Window are vinyl as only option (not a fan), but high quality and sturdy as far as vinyl windows go. Glass quality is excellent, thermal qualities perform as advertised. The windows also muffle outside noise as advertised. Installation was good except for gaps in spray foam insulation around...
Power Home Remodeling
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Reviewed in June 2021
B & G was a great experience from the walk through to the final installation why a great experience. Will be using them again
B & G Electrical & Technology
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Doorbell Installation questions, answered by experts

Through R-value assessments based on climate and existing insulation.

You don’t need to staple insulation, as your drywall and studs will hold it into place. But if you already have a staple gun and staples lying around, it can help keep the product in place and avoid any shifting. But, most experts agree it’s an unnecessary step.

If you’re adding a vapor barrier, you will need to staple that in place.

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, including recycled denim and cellulose from natural fibers.

It’s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat.

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