Choose Stylish Round Top Windows for a Clean Aesthetic

If you want to add attractive, high-performance round-top windows to your home, there’s no better partner than Lifetime. We’re the top Infinity from Marvin dealer in the nation—a reputable company known for their durable, beautiful window designs—and our expertly trained technicians can perform window replacements and installations to meet your unique needs and aesthetic desires.

Our Round-Top Windows

Lifetime installs windows from Infinity from Marvin. This manufacturer crafts round-top windows from fiberglass, which is eight times stronger than vinyl. Round-top windows add an attractive aesthetic feature to your home and can be installed above a new or existing window. These windows come in numerous configurations, and their features and benefits include the following: 

  • Increased natural light to brighten your home’s interior
  • A wide selection of 20 window shapes, such as half-round, circle, and quarter styles
  • Direct glazed glass for superior durability and strength
  • Ability to be combined with double-hung windows, casement windows, picture windows, and more

You can rely on Infinity windows—they won’t leak, crack, expand, or contract during extreme weather changes, providing years of protection for your home. Fiberglass is also available in various colors, interior and exterior finishes, and glass options. Our team will help you select the perfect combination of features to match your home.

A Locally Owned, Community-Minded Company

Lifetime focuses on integrity, personalized customer service, and clear communication. We’ll listen to your ideas and answer your questions—we want you to feel confident in your decision to work with us. We also offer a double transferable lifetime warranty that covers parts, service, labor, and accidental glass breakage for your peace of mind.

Achieve Your Home Renovation Goals

Lifetime is dedicated to your satisfaction. We’re a BBB Torch Award winner, and we have locations in Denver, CO, Phoenix, AZ, and we serve nearby cities. Reach out to us today to schedule a complimentary consultation to discuss your new round-top windows. Make sure to ask about our financing and special offers.

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Read Our Reviews

It takes a special home remodeling contractor to consistently deliver best-in-class customer service. Read about our customers’ delightful experience working with Lifetime, then contact us today to get started with your project.

"Lifetime Windows did an outstanding job replacing our windows & sliding patio door. The crew are definitely skilled craftsmen who have experience in this industry. There was no damage, they made sure everything was sealed properly, were courteous, and did an excellent job cleaning up. The project went smoothly with great efficiency..."

Mike L.

"We had 16 windows and a patio door replaced by Lifetime and the whole process, from the first meeting and estimate all the way through the final installation, was great!  The sales and office staff were great with communication and the installation crew did an excellent job..."

Travis H.

"Interviewed multiple companies. Lifetime made us the most comfortable and their quote was pleasant for the size of our project. The window crew was phenomenal and did beautiful work! All the windows fit and work perfectly! Can’t wait to have the siding project completed!"

Randy M.

"I had Lifetime Windows & Siding install James Hardie siding on my house. I am very happy with the product and the crew that installed it. The house looks amazing and the crew did a great job of clean-up afterwards. They have been doing this for a long time, and it shows. They work hard and pay attention to details..."

Tim M.

"Lifetime was awesome! I am an architect and am very picky about the work that is done to my house. Everyone was very professional through the whole process from sales to install, and their pricing beat out other competitors. The install crews were very skilled, kind and respectful, and they always made sure everything was taken care of..."

Christine R.

Trusted by some of the biggest names in the business!