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>

Does bathroom insulation need a vapor barrier?

• <div><p>Yes. Bathroom insulation requires a vapor barrier. As a matter of fact, bathrooms and kitchens are the two areas of the home that should always get a vapor barrier because of the excess moisture. If you don’t have a vapor barrier in place in these rooms, the moisture will build up and eventually lead to mold and bacteria, not to mention the destruction of the insulation.</p></div>

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Last update on December 09, 2025

Reviewed in December 2025
Joel and his coworker expertly and cost-effectively installed beautiful seamless gutters and downspouts on my detached garage. I recommend them highly.
Mid-State Seamless Guttering
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Reviewed in October 2025
Excellent Customer Service - A learning experience for all of us - Installed, perfectly level and sturdy a new European Fence - Highly Recommend
Matthews Fencing
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Reviewed in March 2024
Charged me $1000 to replace a compressor. A few months later the unit started acting up. Called Jamie. Got tired of the no calls and no shows so I hired someone else to look at. Turns out he never installed a new compressor. Find another HVAC person you can trust.
Johnson A/C Systems
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Reviewed in March 2023
Adeline is professional, he is a perfectionist, he cleans up after completing work. Couldnâ t be more satisfied with his work installing our backsplash.
ARS Construction, LLC
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Reviewed in February 2023
5 star job in every way. Installed a pressure regulator, and a water heater expansion tank. Repaired some very difficult to find leaks in a shower stall that were due poor work by the builder. Cameron is a very good worker with a strong work ethic . I was very pleased with the his work ....
Bernhardy Plumbing
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Reviewed in December 2021
I called at noon & they trenched & installed 250 feet new water line in less than 24 hours. The installation was great. New local company & we know the family. They are great people & I trust them for all my future needs.
NPR Trenching Services
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Reviewed in September 2021
I recently bought a fixer upper and live out of town. Looking for someone reliable and honest while not being local to oversee the job from start to finish was a little scary. GENESIS was EXCELLENT!!! Communicated with me the whole time, sent pictures of the bad wood they were replacing, and...
Genesis Roofing
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Reviewed in May 2020
Anthony installed a quiet cool whole house fan and it works great! The install went as planned and Anthony and his crew were on time and very professional. I highly recommend his company and will not hesitate to use him again.
Anthony Sanchez Electric
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Reviewed in November 2019
In our opinion no one should hire this man and his company. Jeff Davis owns this company and is not licensed. He touts his 30 years of experience whenever you question any of his company's work. The state of Tennessee allows unlicensed building contractors to enter into contracts as long as they...
Davis Metal Builders
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Reviewed in April 2019
Weatherproof Roofing did an excellent job on our recent roof installation. We were very pleased with the efficient and attractive job they did as well as the very good cleanup afterwards. We would highly recommend this contractor.
Perfect-Roof, LLC
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Doorbell Installation questions, answered by experts

Installing insulation helps reduce energy usage, improve home comfort, and lower utility bills by maintaining stable indoor temperatures year-round.

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.

Rockwool insulation can last up to 100 years, but just how long this insulation lasts in your home depends on how well it's maintained. Poorly installed insulation may last only 30 years, so be sure to regularly inspect your home's insulation for water damage, settling, and pests to give your insulation the best chance of having a long lifespan.

Yes. Bathroom insulation requires a vapor barrier. As a matter of fact, bathrooms and kitchens are the two areas of the home that should always get a vapor barrier because of the excess moisture. If you don’t have a vapor barrier in place in these rooms, the moisture will build up and eventually lead to mold and bacteria, not to mention the destruction of the insulation.

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