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TRUSTED BY WILLIAMSPORT, OH HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon28
    Verified insulation services reviews

Top-Rated Insulation pros in Williamsport - Updated Nov 2026

Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
270
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Williamsport, OH and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Emergency services offered

"This was an absolutely professional and expert job from start to finish. I needed insulation installed to replace the old insulation in my attic. The scheduling was easy, communication was flawless from start to finish, the job was done right and quickly, and my house was cleaned up at the end. Additionally they are insured and let you know that right off the bat. Absolutely recommend this company!"
Roofing
Roofing
Roofing
Roofing
Roofing

+87

1668 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for USA Insulation of Columbus
USA Insulation of Columbus
4.2(
196
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Williamsport, OH and surrounding areas

In business since 1985

Free estimates

Credit card accepted

"Had the whole house insulated in 2016. Just found out that there is now mold in the attic. Have had three different contractors come to look at it and ALL have said the reason is because when the insulation was blown into the attic they did not take the time to rake it away from the soffits. Now I'm faced with a major repair bill of $3000 to eliminate the mold. Plus, to make matters worse, my utility bill did not go down very much after having this done. Only thing I can say is that the house is more comfortable. So beware if you use this company and make sure they install the insulation into your attic correctly!"
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+14

Recommended by87%of homeowners
Avatar for Jr Insulation Services
Jr Insulation Services
5.0(
6
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Williamsport, OH and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"The company was very supportive and accommodating. They took their time during the initial visit to review our attic before supplying a competitive quote which we accepted. They stuck by the quote during the completion of the job even though part of the attic required some additional insulation. Both Jose and Sergio were extremely thorough and professional. I will definitely recommend them to others without hesitation."
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+6

Recommended by100%of homeowners
GreenForce USA LLC
4.8(
28
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Williamsport, OH and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"My wife and I attended a presentation by James Manfield, the owner of GreenForce.  We were impressed with company product and Jame's punctuality, professionalism and honesty.  We decided to hire his company to add insulation to attic of my in-laws house.  The installers came on time and over 9 hours managed to complete 95% of the job.  The installers were polite, professional and clean.  The subsequent installers came next day and completed the job.  We are very pleased with James and the service provided by his company. As FYI, we had similar radiant barrier installed by another company in our own house in 2012 and we were pleased with the reduction in heating and cooling cost."
Recommended by96%of homeowners
Avatar for Terminix - Urbancrest -Termite & Pest Control
Terminix - Urbancrest -Termite & Pest Control
4.1(
312
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Williamsport, OH and surrounding areas

In business since 1927

Free estimates

Credit card accepted

When pests or termites move in, you want the ultimate weapon to take them out: Terminix, America’s leading provider of termite and pest control. It's no wonder more than 2.7 million customers trust us to protect their homes and families from the havoc that unwanted intruders can create. You can look to us for a wide range of services to protect your home top to bottom, inside and out: Insulation Service, Moisture Control Solutions, Rodent and Wildlife Service and more. We can even help you win the fight against the bite with our revolutionary Mosquito Service. Don’t trust your home to just anybody. Go big. Go strong. Go Terminix. Protector of home since 1927.\n

Recommended by86%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Williamsport, OH and surrounding areas

In business since 1971

Credit card accepted

"Their plumber came out. He opened up the wall. He fixed the pipe and insulated the pipe. I have been with them for 15 years and they have fixed everything in my house and it never costs me more than $125.00. They don't try to dodge their responsibility. I have recommended them to multiple people."
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+2

Recommended by65%of homeowners
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Insulation FAQs, answered by experts

While insulation is required for all exterior walls in a house, it is not typically required for interior walls. Local and state building codes mandate that new construction homes have adequate insulation in exterior walls and ceilings to suit the local climate.

However, there are several benefits to adding insulation to interior walls. It is excellent for sound-dampening between rooms and can help with temperature control by maintaining a regulated temperature in specific rooms and lowering heat transfer between adjacent areas. Insulating interior walls can also contribute to the overall energy efficiency of your home.

Plaster itself has a higher R-value than drywall. However, there are other considerations surrounding plaster and insulation. As a general rule, it's easier to obtain consistency in insulating value and quality when working with drywall rather than plaster. Plaster walls often don't contain any insulation behind the wall covering by design, and careful evaluation is necessary when choosing to add it.

Single-pane windows might let in the cold, but if you’re not ready for a long-term solution or window replacement, there are quick fixes to keep your space warmer. Start by sealing gaps with weatherstripping or caulking around the frame to block drafts. For an extra barrier, apply window insulation film to the glass, trapping an air pocket between the film and the window. Thick curtains or thermal drapes can also help keep the chill at bay. And if you’re in a pinch and looking to get creative, bubble wrap can provide a surprisingly effective layer of insulation—just spritz the window with water and press it on, bubble side in.

In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to keep your crawl space dry.

Cellulose insulation is usually made from recycled paper products, such as old newspapers, but cellulose might also contain recycled denim. While most homeowners traditionally buy cellulose insulation to use for installation, it is possible to make your own at home with old newspapers, cardboard, a paper shredder, and boric acid (important for fireproofing your cellulose insulation materials).

The Williamsport, OH homeowners’ guide to insulation services

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