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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Q: Is it worth it to remove old attic insulation?

• <div><p>The life span of insulation is between 20 and 100 years. At that time, existing insulation can fall victim to gravity, resulting in compression, which reduces its insulating protection or R-value. If you can't simply add more insulation over the existing material, removing the old to increase the effectiveness of the new can reduce your energy bills and make the project worth the time and money investment.</p></div>

Q: Is R13 or R30 insulation better?

• <div><p>R-30 insulation is better for higher thermal resistance, but whether it&rsquo;s &quot;better&quot; depends on the application. R-30 is much thicker and suited for areas like attics or floors in cold climates, where more insulation is required. R-13, on the other hand, is thinner and works well for 2x4 walls or milder climates where less insulation is sufficient. Choosing between R-13 and R-30 depends on the area being insulated and the climate. For example, R-30 provides more insulation but may not fit everywhere in your home.</p></div>

Q: What's the difference between fiberglass insulation and foam board?

• <div><p>When it comes to <a href="https://www.angi.com/articles/fiberglass-insulation-vs-foam-board.htm">fiberglass insulation versus foam board</a>, there are a few notable differences, both aesthetically and functionally. Fiberglass insulation is soft and flexible, meaning it can be squeezed into tight spaces more easily than foam board. Fiberglass insulation also has a higher R-value, making it a better pick for colder climates. However, foam board insulation can resist moisture and pest damage much better than fiberglass. </p></div>

Q: How long does open-cell foam last?

• <div><p>Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.</p></div>

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Verified Reviews for Doorbell Installation pros in Holcombe, WI

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

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

Last update on May 01, 2025

Reviewed in May 2025
Installers were experienced and very capable. Showed up on time and were very efficient. The windows appear to be very well made and all the mechanisms work smoothly. Very satisfied,
Mad City Windows & Baths
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Reviewed in April 2022
Very professional people working for this business... from the salesperson who came to explain the whole process to the installer. The installer was extremely neat and arrived on time which I appreciated. I hate when workers arrive late to the job and you're stuck waiting. He did an awesome...
Bath Planet of Chicago
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Reviewed in February 2022
I could not have asked for a better duo to help me select window treatments for my new home! Their expertise in assisting me in selecting the right window coverings, the vast selection available, and their installation is top-notch! They took care of everything for me. I absolutely love my new...
T Lynns
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Reviewed in January 2019
Awesome experience! Michael was so helpful in hiding me through all the choices I had for aiding and windows. I was working on a budget and he helped me figure out a way to get what I needed for a great price. But even more than the price was how comfortable he made me feel making a huge...
Renew Home Exteriors
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Reviewed in July 2018
Excellent contractor who is skilled, reliable and honest. He did a very tricky shower door installation and switched out the plumbing fixtures. I will definitely be hiring him again for future projects and I have no hesitation in giving him my highest recommendation.
Gall's Contracting
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Reviewed in March 2018
The Been Doing It crew was one of the best construction crews I've had work for me, and I've hired quite a few. They had all materials here on the day they said it would be here. The floor was installed almost in one day. The crew came back the next day, finished the flooring, and cleaned...
Been Doin' It Construction LLC
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Reviewed in October 2017
StoneTop was patient with my questions and the difficult choices of colors, finishes, textures, etc. They brought samples that helped a lot and answered all my follow up questions. After installation we had a couple minor cosmetic things to finish and they were very willing to return and do the...
StoneTop Surfaces
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Reviewed in January 2016
Once finally completed, no complaints with the quality of work performed by Scott or Carlos; well done, beautiful, professional. Each of the employees are nice, courteous and respectful and, actually, my dogs liked them - that says a lot to me (they know!). Problems lie with scheduling. ...
New View Remodeling, Inc.
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Doorbell Installation questions, answered by experts

The life span of insulation is between 20 and 100 years. At that time, existing insulation can fall victim to gravity, resulting in compression, which reduces its insulating protection or R-value. If you can't simply add more insulation over the existing material, removing the old to increase the effectiveness of the new can reduce your energy bills and make the project worth the time and money investment.

R-30 insulation is better for higher thermal resistance, but whether it’s "better" depends on the application. R-30 is much thicker and suited for areas like attics or floors in cold climates, where more insulation is required. R-13, on the other hand, is thinner and works well for 2x4 walls or milder climates where less insulation is sufficient. Choosing between R-13 and R-30 depends on the area being insulated and the climate. For example, R-30 provides more insulation but may not fit everywhere in your home.

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.

When it comes to fiberglass insulation versus foam board, there are a few notable differences, both aesthetically and functionally. Fiberglass insulation is soft and flexible, meaning it can be squeezed into tight spaces more easily than foam board. Fiberglass insulation also has a higher R-value, making it a better pick for colder climates. However, foam board insulation can resist moisture and pest damage much better than fiberglass.

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

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