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>

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Q: Are there eco-friendly blown-in insulation options?

• <div><p>Yes, eco-friendly blown-in insulation options include materials made from recycled cellulose or wool. These offer excellent thermal performance and sustainability, reducing energy consumption and environmental impact while enhancing home efficiency.</p></div>

Q: How long can a house go without heat before pipes freeze?

• <div><p>Pipes in your house can freeze after six hours or so if you lose power and temperatures are below freezing. You can prepare for potential power outages by winterizing your pipes with insulation. Also, whenever temperatures drop below 20 degrees Fahrenheit, turn your faucets on very low and leave them dripping until temperatures rise.</p></div>

Q: Does exposed ductwork sweat?

• <div><p>Exposed ductwork can sweat just like ductwork placed behind walls, sometimes even more so. Ductwork sweats&mdash;like a cold drink on a hot day&mdash;because of a temperature imbalance between the air in the duct and the air in the room. In a crawl space or wall, this temperature can equalize faster due to the small space but in lofts and open rooms, that wouldn&rsquo;t happen as quickly. Many people insulate their ducts for this reason. </p></div>

Q: Is it worth it to insulate walls?

• <div><p>Insulating your home's exterior walls can realize up to a 20% reduction in your monthly energy bills. This means that regardless of how much the project costs, it can begin to pay you back immediately. Additionally, adding spray foam and other high-end materials can increase the selling value of the property. </p></div>

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Verified Reviews for Insulation Service pros in Summit, NY

*The Angi rating for Insulation Service companies in Summit, NY 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 Summit, NY 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 November 22, 2025

Reviewed in January 2018
They did a *wonderful* job (in the dead of winter, no less)! We are very pleased with them and would recommend them to anyone without reservation!
Northern Windows, Siding, Roofing, & Insulation
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Reviewed in September 2020
Explicit Exteriors is without doubt a first-rate company. Jason and his team have seamlessly completed 3 jobs for us, both interior and exterior. They pay attention to detail, work cleanly, complete jobs in a timely manor, and are trustworthy. What sets them even further above most other...
Explicit Exteriors
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Reviewed in April 2021
House was built in 1890, 2800 SF, 3 bed room 2 bath and heating and cooling it was a struggle. I had enough, enough of wasting my money on fuel(350 gallons + a month), pellets (2 pellet stoves), and trying to keep the thermostat set on 78-80 degrees in hopes it would be 64 degrees upstairs where...
The Climate Chief LLC
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Reviewed in October 2012
Andy and his team were prompt, courteous, professional and a pleasure to work with. He communicated updates by phone and by email to me and my husband. When we added something not in the original contract he quickly priced it out and revised our paperwork and sent the revised estimate again. He...
Air Treatment System
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Reviewed in January 2016
The crew was great & had wonderful leadership from Danny. Unfortunately, it took longer than expected. That was to be expected doing this sort of work.
Energy Management Solutions
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Reviewed in June 2015
The two workers showed up on time and performed the work as advertised. They removed the old fiberglass insulation that I had installed and bagged it all; they covered the entire basement wall with plastic from the top to the floor as well as sealing off the basement from the entry. During the...
JAG Construction
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Reviewed in November 2012
In general, very well. They were punctual, mostly neat, and responsive to any changes we asked for. They built me a platform for my laundry equipment and moved the dryer vent. The project did take longer than I expected - over a month; towards the end, it was clear that they were in a hurry to...
Comfort Windows
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Reviewed in March 2014
AirTight of New York spray foamed the sill plate and walls of my basement. Previously I just had some fiberglass insulation stuck in there which did not stop air flow and made my floors and basement very cold. The people from AirTight of New York were professional and efficient. I no longer...
AirTight of New York
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Reviewed in March 2014
Great job! This is a 110yr old farmhouse that wasn't very well insulated. This is a second home that we use mostly during ski season. We meet with the contractor and he was very thorough in describing the benefits of their product. He reviewed the process and how long it would take to complete...
North East Spray Foam
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Blown In Insulation Install or Upgrade

Batt, Rolled or Reflective Insulation Install or Upgrade

Spray Foam Insulation Installation

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Standard

Standard

Angelo's Southern Tier Spray Foam

Angelo's Southern Tier Spray Foam

BuildBlockCNY

BuildBlockCNY

TFG Contracting

TFG Contracting

Countrymen Contracting

Countrymen Contracting

Knapp & Schlappi Lumber Company

Knapp & Schlappi Lumber Company

McGarvey Construction

McGarvey Construction

Sarna Construction

Sarna Construction

Christians Insulation

Christians Insulation

Hyland Timber Framing

Hyland Timber Framing

The Summit, NY homeowners’ guide to insulation services

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How Much Does Crawl Space Insulation Cost? [2025 Data]

How Much Does It Cost to Rent a Blown-In Insulation Machine?

How to Fish Wire Through an Insulated Wall: 8 Tips for Snaking Wires

Is Fiberglass Dangerous and How to Protect Yourself

Spray Foam Insulation vs. Fiberglass: What's the Difference?

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