When is the best time to replace windows?

When is the best time to replace your windows and doors?  What window is best for my home in Colorado?  Will replacement windows add value to my home?  What is the installation process?  We will answer all those questions and more after your free consultation.

Now What?

Here's the best part - we offer Infinity from Marvin windows.  Infinity from Marvin is the best fiberglass replacement window on the market.  No one but Marvin has the Patented Ultrex fiberglass that the Infinity window is made of.  And we have the proof.

What is the Process?

Whether this is your first time, or you’ve replaced in the past, Gravina's Window Center of Littleton wants to help answer those and many other questions you may have.  We have been around a long time and have seen almost every window remodeling situation. Why not let our expertise and longevity help you in planning your window replacement project?


We are the oldest Infinity from Marvin Dealer in the country. For four generations now, Gravina's Window Center has been transforming the homes and lives of Denver metro area residents. We are a top-flight window replacement company based in Littleton offering a comprehensive portfolio of home improvement services which include consultation, replacement windows, patio doors, entry doors, and James Hardie Siding.  Regardless of whether you need a simple update or are interested in adding a whole house of windows and doors, Gravina’s can deliver for you.

Consult with us today for your window or door replacement needs. We’re happy to help!

Fill out my online form.

Window Replacement Denver


We offer Infinity from Marvin replacement windows for your remodeling projects, merely the best fiberglass window on the market.


Our Infinity replacement patio doors are built not only to maximize spectacular views, but also to perform with style and beauty.


You'll find the perfect exterior door to compliment the style of your home. Choose from our wide selection of fiberglass front entry doors.

guildmaster award winners