Get matched with top insulation pros in Lewisville, TX

"Very efficient and trustworthy crew, vacuumed and installed new insulation made the process very smooth."

"Mr. Harsin inspected my attic and fully explained options and trade offs to improve my insulation. His crew came next day, were knowledgeable, completed the work and cleaned up afterwards."

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.

"They came by last Saturday for a quick Insulation Job in the garage and handled everything fairly quickly."

Expert insulation contractor for Denton & Tarrant County—specializing in attic insulation, blown-in insulation, insulation removal, air sealing, radiant barrier installation, and energy efficiency upgrades. We tackle noise reduction and pest-damaged insulation, delivering comfort and lower energy bills for homes and businesses. Our team uses only W-2 employees—not subcontractors—for guaranteed workmanship through our Iron-Clad Guarantee. Every free estimate includes thermal imaging to pinpoint your needs. Trusted for honest service and local expertise. Call now for a free in-person quote on attic insulation, removal, air sealing, radiant barrier, or upgrades.

"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 !"

"If you just need an attic insulated, then these guys offer a replete program."

"After to job was completed the attic looked amazing. The insulation was perfectly level. I was impressed they did an excellent job cleaning up afterwards."

"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!"

"The owner came out and did an estimate of the job needing to be done. Was very polite, professional and honest. I had interviewed 4 other insulation companies and they all said something different."