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  • 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

14 neighbors recently requested a quote
Fulkrum Operating Company, LLC
5.0(
34
)
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

"My son recently purchased an older home that had very little attic insulation. After Rob's team finished adding fiberglass insulation the A/C turned off almost immediately and the home remained at 74 degrees even though it was over 100 that day. I was very impressed and plan to have them come inspect my attic next !"
28 neighbors recently requested a quote
Recommended by61%of homeowners
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

7 neighbors recently requested a quote
Recommended by28%of homeowners
Avatar for RadiantGUARD-PRO
RadiantGUARD-PRO
4.4(
14
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Lewisville, TX and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"They were on time, courteous, and attentive to my wishes. One mistake was made that was promptly corrected, no questions asked, no arguments and no additional charge! I was extremely happy with the outcome. I would hire them again."
Radiant Barrier and Attic Insulation in Plano TX
Cleaned and Ready for RadiantGUARD-PRO
Cooler Attic by At Least 30 Degrees!
Response time2 days
Recommended by91%of homeowners
...
Showing 1-10 of 317
Insulation FAQs, answered by experts

Selling a house with spray foam insulation can be challenging due to concerns about improper installation or its compatibility with the home's structure. If not applied correctly, spray foam can cause issues such as moisture buildup, cracking, or damage to wiring and plumbing. If the insulation didn't cure correctly, there are also flammability concerns. Removing or repairing this type of insulation can pose risks as well.

It's essential to use insulation materials specifically designed for air ducts. Common types of duct insulation materials include fiberglass, foam board, and reflective foil. These insulation materials have the right properties to withstand the temperature and airflow conditions within the ductwork. Using the appropriate insulation not only ensures efficient temperature control but also prevents potential safety hazards or the release of harmful particles into the air.

The thickness of floor insulation will depend on the R-value you plan to achieve. R-value varies on the type of material as well as its thickness and density. Insulation materials with low R-values can be layered to match the value of denser materials. As long as your floor insulation is packed tightly, seals the area from drafts, and doesn’t prevent ventilation, it can be as thick (or thin) as you need.

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. 

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

An insulated garage door is a great long-term investment if it’s within your budget. They save energy and give the door year-round usability. In other words, the door pays for itself after a few nasty winters. Most modern garage doors already have a fair amount of insulation, so look into those options if you don’t feel comfortable splurging.

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.