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Lewisville, TX · Denton CountyWindows, doors & attic insulation in Lewisville.

Replacement windows and sliding doors, entry doors and attic insulation for Lewisville homes, from a locally owned Dallas–Fort Worth team. Start with a free home assessment and a written price.

Or call 469.340.4780  ·  Financing on projects of $2,500+

Our services in Lewisville

Three upgrades, one cooler, tighter home.

Window & sliding door replacement in Lewisville

Genview 5000 Series vinyl and 8000 Series aluminum windows, built in Dallas, plus sliding patio doors, custom sized for your openings.

Entry door replacement in Lewisville

Fiberglass and steel front, French and garage-to-house doors with insulated cores and new weatherstripping.

Attic insulation in Lewisville

Blown-in insulation brought up to the recommended depth, plus air sealing. Most homes are done in a day.

Homes in Lewisville

What we see in Lewisville homes.

Lewisville has older neighborhoods around Old Town, a wave of homes from the 1980s and 90s, and newer areas like Castle Hills, so we see everything from original aluminum windows to tired builder-grade vinyl.

Original windows reaching the end of their life

Windows from Lewisville's 1970s–90s building boom often have failed seals (fogging between the panes), worn weatherstripping and clear glass with no Low-E coating, so west- and south-facing rooms run hot.

Attics that have settled

Blown-in insulation from that era has usually settled well below today's recommended depth. Topping it up is one of the lowest-cost ways to cut summer cooling bills.

Entry doors exposed to the afternoon sun

Wood and early steel doors on west-facing entries warp, fade and leak air. A fiberglass door holds its shape and insulates better.

Our Lewisville service area

Serving every neighborhood in Lewisville.

Wise CountyJack CountyVan Zandt CountyHunt CountyHood CountyErath CountyHill CountyEllis CountyClay CountyKaufman CountyCooke CountyNavarro CountyMontague CountyParker CountyBosque CountySomervell CountyFannin CountyJohnson CountyGrayson CountyCollin CountyRockwall CountyTarrant CountyDallas CountyDenton CountyFriscoDentonLewisvilleCarrolltonFlower MoundCoppell

Neighborhoods

  • Old Town Lewisville
  • Castle Hills
  • Vista Ridge area
  • Lake Lewisville area

ZIP codes 75057, 75067, 75077

Nearby: Flower Mound, Carrollton, Coppell, Denton, Frisco

Why Lewisville homeowners choose Genview

Free assessment

We check your windows, doors and attic and tell you what matters most.

Written pricing

Clear, itemized quotes up front. No pressure, no surprises.

Local installers

Licensed and insured, with a [X]-year workmanship warranty.

Easy financing

1 to 10 years on projects of $2,500+. See payments

Questions

Lewisville window, door & insulation FAQs.

Do I need a permit to replace windows in Lewisville?
Requirements depend on the scope of the work, for example whether the opening size changes. We check with the City of Lewisville for every project and pull any permit that's required as part of the job.
Do you work with Lewisville HOAs?
Yes. Many Lewisville neighborhoods have HOA rules on window color, grid patterns and front doors. We can provide product specs, colors and photos for your architectural review application before anything is ordered.
How much do replacement windows cost in Lewisville?
It depends on size, style and the line you choose. Our 8000 Series aluminum windows run about 20% more than our 5000 Series vinyl; our window cost estimator gives a broad range from photos of your house, and this guide breaks down DFW pricing.
How soon can you come out to Lewisville?
We schedule free in-home assessments across Denton County and the rest of the metroplex, usually within the week. Book a time online or call 469.340.4780.
Is financing available?
Yes, on projects of $2,500 or more, with terms of 1, 3, 5 or 10 years, subject to credit approval. Estimate a monthly payment.
How long does installation take?
Most window projects are installed in one to two days once the custom windows arrive; an entry door is usually a single day, and attic insulation is typically done in a few hours.

Don't see your question? Call 469.340.4780 or book a free home assessment.

Book your free Lewisville home assessment.

About 90 minutes at your home, with written findings you keep either way.