How do I add insulation to existing walls?

• <div><p>If you need to insulate behind finished walls, the best option will likely be to have an insulation professional install <a href="https://www.angi.com/articles/blown-in-insulation.htm">blown-in insulation</a>. The installation requires small holes cut in your wall, after which the installer can blow loose-fill insulation into the void. After the installation, you’ll have minor drywall patching, which shouldn’t cost more than <b>$100</b>. Compared to ripping down the existing drywall, using a different type of insulation, and replacing and finishing the drywall, this should save you hundreds or even thousands, depending on the size of the room you’re insulating.</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>

Does basement insulation need a vapor barrier?

• <div><p>Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you <a href="https://www.angi.com/articles/how-to-install-insulation.htm">install insulation</a> or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. </p><p> </p></div>

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Q: Is it OK to put plywood over insulation in an attic?

• <div><p>Installing sheets of plywood over <a href="https://www.angi.com/articles/attic-insulation-guide.htm">attic insulation</a> is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air&mdash;so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. </p><p>It&rsquo;s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you&rsquo;ll need to install a subfloor before putting plywood over insulation in your attic.</p></div>

Q: Should you insulate your entire attic?

• <div><p>Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you&rsquo;ll need to do down the line. </p></div>

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Verified Reviews for Doorbell Installation pros in Marshall, MN

*The Angi rating for Doorbell Installation companies in Marshall, MN 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 Marshall, MN 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 July 15, 2026

Reviewed in July 2026
Erdmann Construction replaced our vinyl siding after it was damaged in a hail storm. Matt did a wonderful job of installing the siding in a timely fashion and the completed project looks amazing and professionally done. We would highly recommend Erdmann Construction for any future construction...
Erdmann Construction LLC
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Reviewed in November 2017
The folks from Lifetime Shingles did an excellent job. They got the work done in a timely fashion as promised and all installation was done with top notch professionalism. Their personnel have also been very helpful in completing warranty registration and completion of the paperwork required to...
Lifetime Shingles LLC
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Reviewed in April 2015
Rob Dunham, Owner of All-Star Basements, that performed work in my home specified under a design draw-up and pricing estimate from his previous employer, American Waterworks sump-pump company, as if they were executing the project. He never disclosed he was no longer with American Waterworks and...
All-Star Basements
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Reviewed in January 2015
I had an estimate from another plumber for the same job for $4500. while EZ was $1905. They came when they said, got right to work and did a clean, nice job and took away the old tank heater. I called them back to do the cleaning on my other tankless water heater and install a remote control...
EZ Plumbing Service
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Reviewed in July 2014
The whole experience with Distinctive Stone went seamlessly! <br /> <br /> First, I needed to choose a stone. The office manager reviewed many, many options at their varying prices. It was a long process, and she was helpful, kind, and patient while I reviewed my options. I wanted a light...
DISTINCTIVE STONE INTERIORS
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Reviewed in April 2013
Two of the three doors installed OK. The door requiring widening was a mess. Foam filler spilled onto new door and onto carpet. New frame created but the 45 degree angles did not match up. Scratches on door. Appears the door was a difficult install, but maybe frustration got in the way of...
Kesteloot Contruction Inc
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Reviewed in November 2012
Matt Coequyt, Owner, id all the work himself and recommended better solutions for our bathroom. Cleaned up after the job - made the replacement shower better than the previous. Matt corrected previous errors in installation (unlevel floor) that caused problems with the existing shower. Matt...
Coequyt Plumbing & Heating
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Doorbell Installation questions, answered by experts

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home.

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

If you need to insulate behind finished walls, the best option will likely be to have an insulation professional install blown-in insulation. The installation requires small holes cut in your wall, after which the installer can blow loose-fill insulation into the void. After the installation, you’ll have minor drywall patching, which shouldn’t cost more than $100. Compared to ripping down the existing drywall, using a different type of insulation, and replacing and finishing the drywall, this should save you hundreds or even thousands, depending on the size of the room you’re insulating.

Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you’ll need to do down the line.

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, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses.

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