Do insulation companies need to be licensed?

• <div><p>In some areas, insulation companies require a special license, while some states only require them to hold general contractor licenses. Some municipalities may not mandate any license, although you should always ensure a contractor is fully insured. You can use Angi’s <a href="https://www.angi.com/angi-license-check.htm">license lookup tool</a> to confirm whether or not an insulation contractor you’re considering holds the necessary license for your area. You can also contact the company for information regarding licenses, certifications, and insurance.</p></div>

Does insulating windows with plastic work?

• <div><p>Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and <a href="https://www.angi.com/articles/how-to-caulk-windows.htm">caulking your windows</a> to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.</p></div>

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TRUSTED BY WINCHESTER, VA HOMEOWNERS

4.8
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33
Verified insulation services reviews

Verified Reviews for Insulation Service pros in Winchester, VA

*The Angi rating for Insulation Service companies in Winchester, VA 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 Winchester, VA 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 09, 2025

Reviewed in September 2025
Richard. Knox, has helped with several projects on our home. From completely painting the exterior of our cedar home. To replacing all the deck boards on the porch, with trek's decking boards. Replace all the wooden rails with white plastic railing. Then he helped me refinish and paint my...
Knotts Handyman Services
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Reviewed in July 2024
Koala Insulation did an excellent job for us. Brian's team removed an old radiant barrier from our attic floor, installed baffles along the underside of the roof to allow our soffit vents to breath, and added additional blown-in insulation to bring the R-value to 49. I would highly...
Koala Insulation of Chester County
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Reviewed in April 2024
Israel fully remodeled the mud room in our home. He did insulation, drywall, countertops, shelves, doors, etc and left it looking amazing! It is definitely our new favorite addition to the home!
Gutierrez Builds Construction
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Reviewed in November 2022
Had springs changed and door Insulated did a great job thanks
Door Serv Pro
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Reviewed in September 2022
Arrived on Monday morning to do demolition and cleaning of a 30X70 crawl space because of mold infestation. On Thursday was informed that insulation was out cleaning was done and insulation was to be installed and Drylok put on walls and job completed on Friday. Received call Friday morning from...
Veterans Restoration
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Reviewed in November 2021
I have a old 2 story brick home. They installed a 6" double pipe insulated stainless steel flue liner from the roof to my basement. It took 8.5 hours for them to remove the old aluminum liner and install the new one. Everything in the process from estimate to finish was very professional and...
Shen Valley Fireplace and Chimney
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Reviewed in October 2021
Nova did an incredible job framing, drywall, floor leveling and installation, tile work, sound proof insulation, and drop ceiling for my unfinished basement. Isaac was present for all inspections and was very easy to communicate with. Very happy with the work that was done.
Nova Home Improvements LLC
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Reviewed in May 2021
The team of Ahmed, Maligie, and Deonte did a fantastic job re-insulating my crawlspace. Outstanding work with great customer service.
JES Foundation Repair
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Reviewed in February 2021
Sam at Henkel Handyman was efficient and did amazing work! He replaced some windows for me and changed lights, doors, and replaced other things around my home. He also built a shed pad for my shed and insulated and installed windows, flooring and painted my shed. He worked quickly and the work...
Henkel Handyman
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Reviewed in August 2019
They are insulation specialists that said the insulation job was not for them
Wise Home Energy, LLC
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Insulation questions, answered by experts

In some areas, insulation companies require a special license, while some states only require them to hold general contractor licenses. Some municipalities may not mandate any license, although you should always ensure a contractor is fully insured. You can use Angi’s license lookup tool to confirm whether or not an insulation contractor you’re considering holds the necessary license for your area. You can also contact the company for information regarding licenses, certifications, and insurance.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

Although the cost might seem high, winterizing your home is important for your health and the structural integrity of your home. Winterizing will keep your home warm and toasty during the cold months and prolong the life of your appliances, windows, pipes, sprinkler system, pool, and more.

DIY installation is not recommended, as professionals ensure even distribution, proper sealing, and compliance with building codes.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

The Winchester, VA homeowners’ guide to insulation services

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

See all articles

Kate Fann
•
Apr 16, 2026Apr 16, 2026
How Much Does It Cost to Insulate a Wall? [2026 Data]
How much does it cost to insulate a wall? This guide breaks down the associated costs and variables to consider when setting your project budget.
Dan Simms
•
May 30, 2026May 30, 2026
How Much Does Attic Insulation Cost? [2026 Data]
Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you.
Dan Simms
•
Mar 6, 2026Mar 6, 2026
How Much Does Pipe Insulation Cost? [2026 Data]
Find out the average pipe insulation cost, including material and labor prices, plus tips to save money on your project.
Deane Biermeier
•
May 2, 2026May 2, 2026
How to Insulate Plaster Walls in a Home
Learning how to insulate plaster walls can help improve your home's energy efficiency. However, there are crucial cautions to consider before attempting.
Scott Dylan Westerlund
•
Apr 9, 2026Apr 9, 2026
What Is Dryer Vent Insulation? Should You Insulate It?
Learn how to decide if your home needs dryer vent insulation to protect your vent from drafts and moisture that can make your energy usage less efficient. Poorly ventilated dryer vents also increase mold risks!
Kate Fann
•
Apr 10, 2026Apr 10, 2026
How to Remove Fiberglass Insulation
Read our step-by-step guide and learn how to remove fiberglass insulation. Our instructions will help you remove this tricky material quickly and safely.