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>

Does the paper on insulation go in or out?

• <div><p>If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process. </p><p>A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.</p></div>

Get matched with top insulation pros in Sitka, AK

Q: What temperature do pipes freeze in a house?

• <div><p>Water freezes at 32 degrees Fahrenheit, but the actual <a href="https://www.angi.com/articles/what-temperature-pipes-freeze.htm">temperature that can cause frozen pipes</a> can vary. Generally, it takes 12 hours for pipes to freeze at 32 degrees Fahrenheit.</p><p>Uninsulated pipes can freeze if it&rsquo;s 20 degrees Fahrenheit or colder for over three hours. If your pipes are insulated, it can take six hours or longer for pipes to freeze. Note that some pipe types freeze more often than PEX pipes. <a href="https://www.angi.com/articles/pex-or-copper-pipe-more-likely-freeze.htm">Copper pipes freeze</a> more often because the copper conducts energy and loses heat quickly.</p></div>

Q: Does the paper on insulation go in or out?

• <div><p>If you&rsquo;re using faced insulation with paper, face the paper toward the inside of the room during the installation process. </p><p>A good way to remember this is that the paper should face the &ldquo;warm side&rdquo; as it&rsquo;s the vapor barrier, meaning it should face toward where the heat will be coming from.</p></div>

Q: Should ductwork be wrapped in insulation?

• <div><p>Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated. </p></div>

Q: What is the easiest way to remove insulation?

• <div><p>If you have blown-in insulation, using an insulation vacuum will quickly and easily suck up all the insulation. Many come with built-in HEPA filters for added safety. While some people suggest breaking up large batts and feeding them into the vacuum, this can expose you to more fiberglass fibers. With batts and rolls, carefully removing them and placing them into garbage bags is a better process.</p></div>

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Verified Reviews for Insulation Service pros in Sitka, AK

*The Angi rating for Insulation Service companies in Sitka, AK is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Sitka, AK is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on September 23, 2025

Reviewed in September 2025
Work of Art Drywall was a fantastic choice for our remodel project. Our home, a 1941 gem, needed a complete overhaul. John was a pleasure to work with and was able to break down the project into manageable phases. A remodel such as this can be somewhat overwhelming. He made the process...
Work of Art Drywall and Construction
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Reviewed in October 2023
Gave me great advice, very helpful
Xtreme Alaska Spray Foam, LLC
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Reviewed in August 2023
They were nice and did a good job
Grogan Construction
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Reviewed in March 2023
Quick response, great customer service, knowledgeable.
Electrical Services of Alaska
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Reviewed in August 2021
The guys did a great job power washing the house, desk, and patio pavers. Very detailed and did not miss anything. Well done and the house looks amazing! I would highly recommend this company!
DeMark's, LLC
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Reviewed in September 2019
Held my furniture hostage on the truck until payment was made in full. One driver showed up over an hour late but still tried to charge for his time. Whole team left before paid time was up (there was still work to do). Overall not a great experience
Moda Moving Services
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Reviewed in January 2017
We are so happy we found Seth and Apex Window Fashions to provide blinds for our 1904 Craftsman. Seth successfully navigated a minefield of problems: 1) The windows in our house are old and quirky with various moldings and upgrades. Seth had the expertise to work around potential problems to...
Apex Window Fashions
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Reviewed in February 2012
It went good. Two days after they installed the drain we had a torrential rainfall and no rain got in our basement, so it went really good. It was roughly half of the other quotes I got.
Blackmore Quality Construction
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Reviewed in February 2011
Needed a new lock and door handle for our front door. Went to A-Max looking for some straightforward advice on what to pick and how to install it. The man there was extremely helpful went into great detail and never tried to upsell me to more expensive solutions. Our lock works great and...
A-MAX SECURITY SOLUTIONS
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Reviewed in October 2010
Overall it was fine. I was a little distressed when they asked to keep the car up to 6 hours instead of the 2 to 3 hours we had agreed upon when I made the appointment by phone. The car dealer was NOT comfortable waiting as late as teh 5 or 6 hours would take on a Friday, and so I asked LBR to...
LBR AUTO REPAIR
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Find Insulation pros in Sitka

PolySeal Insulation LLC

4.9(

)

Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+2 more

Serving Sitka, AK and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"We've used PolySeal twice now to insulate our homes and have been extremely satisfied with the result."

17 neighbors recently requested a quote

Recommended by100%of homeowners

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Xtreme Alaska Spray Foam, LLC

4.3(

)

Spray Foam Insulation - Install

Serving Sitka, AK and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"They are easy to deal with, did a great job, and cleaned up well. Very good experience all around."

Response time1 day

19 neighbors recently requested a quote

Recommended by100%of homeowners

Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Sitka, AK and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Tw roofing is very professional. They worked quickly and cleaned up after the job was done. The roof came out so nice that I had them do the trim around the house and that turned out excellent! it made the house look like an over all remodel."

+24

Recommended by100%of homeowners

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Homer Foamer LLC

New to Angi

Injection Insulation - InstallSpray Foam Insulation - Install

Serving Sitka, AK and surrounding areas

In business since 2012

Free estimates

Offers commercial services

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.\n\n

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Avendano Services, LLC

5.0(

)

Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Sitka, AK and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"It was amazing, he was on time and the price was extremely reasonable."

Recommended by100%of homeowners

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Insulation questions, answered by experts

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.

Water freezes at 32 degrees Fahrenheit, but the actual temperature that can cause frozen pipes can vary. Generally, it takes 12 hours for pipes to freeze at 32 degrees Fahrenheit.

Uninsulated pipes can freeze if it’s 20 degrees Fahrenheit or colder for over three hours. If your pipes are insulated, it can take six hours or longer for pipes to freeze. Note that some pipe types freeze more often than PEX pipes. Copper pipes freeze more often because the copper conducts energy and loses heat quickly.

If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process.

A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.

Ductwork should be wrapped in insulation in certain locations. This includes unconditioned interior parts of the home, such as attics, crawl spaces, basement ceilings, and between floors. Duct joints should also be insulated since they're more likely to leak air than other parts of your system. Building codes in some areas also require ductwork to be insulated.

If you have blown-in insulation, using an insulation vacuum will quickly and easily suck up all the insulation. Many come with built-in HEPA filters for added safety. While some people suggest breaking up large batts and feeding them into the vacuum, this can expose you to more fiberglass fibers. With batts and rolls, carefully removing them and placing them into garbage bags is a better process.

The Sitka, AK homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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