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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon503
    Verified insulation services reviews

Top-Rated Insulation pros in Lewisville - Updated Nov 2026

Avatar for Koala Insulation of North Texas
Koala Insulation of North Texas
5.0(
8
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Lewisville, TX and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

At Koala Insulation, we help homeowners improve comfort, lower energy bills, and breathe cleaner air. \n\nIf your home is too hot, too cold, or costing you too much to heat and cool, poor insulation is often the problem.\n\nWe specialize in attic insulation, spray foam, air sealing, and full insulation removal and replacement. \n\nEvery home is different, so we provide honest evaluations and customized solutions, no pressure, just what works.\n\nOur goal is simple: make your home more efficient, comfortable, and healthy.\n\nGet a free insulation evaluation today and start saving.

Before
After
Durring
After
After

+30

13 neighbors recently requested a quote
Fulkrum Operating Company, LLC
5.0(
32
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Lewisville, TX and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"This September I had a home energy audit through Fulkrum Insulation. They said we needed some Ductwork changes and more insulation in the attic. Since having those solutions installed, my electric bill has been dramatically lower than ever before."
35 neighbors recently requested a quote
Recommended by65%of homeowners
Avatar for Attic Construction
Attic Construction
4.4(
86
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Lewisville, TX and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"Only reason I am giving 4 stars instead of 5 is because the team left a lot of insulation for us to clean up ourselves. Otherwise, the quote was fair, they got the job quickly and accept multiple payment methods, which was convenient."
Dirty attic
Clean attic
Insulated attic
Response time6 hrs
Response rate96%
26 neighbors recently requested a quote
Avatar for North TX Insulation
North TX Insulation
5.0(
7
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Lewisville, TX and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"It was great! Jorge & his partner were very prompt, courteous, and efficient. I don’t have a really large attic but 3 other big companies quoted over $4000 to install insulation in my attic. North Tx Insulation did 13 inches of new blown in insulation for $1000.00. They were neat & in and out within an hour. I would highly recommend them!"
Attic upgrade
Insulation blow
R38 blown in
Insulation blow
Attic blown in

+6

6 neighbors recently requested a quote
Recommended by28%of homeowners
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Showing 1-10 of 317
Insulation FAQs, answered by experts

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.

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.

You can purchase bags of cellulose and loose-fill fiberglass blown-in insulation from the same local home improvement store where you rent your blower. If you want to use rock wool insulation, you may need to special order it.

Heat lost through uninsulated basement walls can account for up to 30% of the total energy lost through heat transfer to the outdoors. While homes in mild climates won't gain as much benefit from having an insulated basement as those in cold climates, the effects are still noticeable on your energy bill.

You do not need to drywall over most types of garage insulation. However, doing so can increase noise reduction, make the space more attractive, and keep children and pets from touching harmful fiberglass insulation. If you’re using cellulose or some other type of blown-in insulation (fiberglass and mineral wool are common), you will need drywall to contain the insulation material.

The Lewisville, TX homeowners’ guide to insulation services

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