Oldest Infinity Window Dealer in the Nation

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Gravina’s Window Center of Littleton is the oldest Infinity dealer in the country.  We couldn't be prouder of that and our customers know firsthand we take their window replacement very seriously.  We only trust Marvin for fiberglass windows in Colorado.  Infinity is part of the Marvin Windows and Doors Family of Brands.  

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Top National Dealer for Infinity Windows from Marvin
Top National Dealer for Infinity Windows from Marvin

As Colorado’s oldest Infinity dealer,  Gravina’s Window Center of Littleton could not have accomplished this without all our loyal customers.  Thank you!  And to all our employees, thank you for your hard work and dedication.  This demonstrates our dedication to installing the best quality windows at the absolute best value.

Selection Process for Replacement Windows


1. Assess Your Existing Windows

Assess whether your windows should be retrofitted, or replaced. While most new windows have labels indicating their energy properties, such information is not often available for existing windows. 


2. Meet the Energy Code and Look for the ENERGY STAR®

Windows must meet the locally applicable energy code requirements. Windows that are ENERGY STAR qualified typically meet or exceed energy code requirements. A home’s climate and location determine the relative importance of heating and cooling energy use, the applicable building energy code requirements, and the qualification criteria for ENERGY STAR windows.



3. Look for Efficient Properties on the NFRC Label

The National Fenestration Rating Council (NFRC) label is needed for verification of energy code compliance. The NFRC label displays whole-window energy properties and appears on all fenestration products which are part of the ENERGY STAR program and provides the only reliable way to determine the window energy properties and to compare products.



4. Compare Annual Energy Costs for a Typical House

Look at Window Performance Ratings to compare the annual energy performance of different window types and design conditions for a typical house. Find manufacturers who offer windows and skylights within the generic results shown. Learn more about manufacturers’ specific product options.



5. Customize Energy Use for a Specific House

A computer simulation program, such as RESFEN, lets you compare window performance options by calculating performance based on utility rates for your climate, house design options, and window design options.



6. Choose a Durable Product

Make sure the design and workmanship of the window results in a durable product for your specific application. Window warranties can be an indicator of the reliability of the window and its manufacturer. Durability may vary with location. Aspects of window durability that deserve attention are, frame and sashes, insulating glass seals, weatherstripping, and local requirements for structural integrity.



7. Ensure Proper Installation

Proper installation is necessary for optimal window performance, to ensure an airtight fit and avoid water leakage. Always follow manufacturers installation guidelines and use trained professionals for window installation.




Gravina’s Window Center of Littleton
Family owned and operated in the heart of Littleton, Colorado for over 40 years, Gravina’s Window Center of Littleton knows Denver. We know the benefits of living in this wonderful part of Colorado. Our professionals at Gravina’s Window Center are knowledgeable in energy efficient replacement windows, patio doors and more. Reduce your monthly energy usage; improve your home’s comfort and beauty while gaining peace of mind with additional security, while being GREEN at the same time. Choose a company that helps you protect our environment now and for future generations.
89 W Littleton Blvd.
United States

5 Things Every Homeowner Should Know About Window Replacement

Replacing windows can be confusing. Homeowners are faced with finding a window that provides durability and the right look for their home. With many options out there, how can customers make an informed decision?

There are five factors that determine the quality and durability of a replacement window. Homeowners should use these factors to evaluate what replacement window is right for them.

Total Performance

Replacement windows should be thermally efficient andadd to the total comfort of your home. Choose a window that meets ENERGY STAR® guidelines and has a .32 or lower U-Value, which measures heat transfer through the window.

Material Strengths

There are a variety of window materials available today; making it complicated for homeowners to understand which materials best suit their needs.

 Replacement windows should be low maintenance, durable and continue to look good over time. Wood windows look great but will require much more upkeep over time than fiberglass or vinyl low-maintenance alternatives.

Vinyl, the most frequently used material, has a tendency to warp, fade, expand and contract in extreme temperatures, causing seal failures over time.

A better option is Ultrex®, used by Infinity from Marvin. Ultrex is a pultruded fiberglass material that is eight times stronger than vinyl and three times stronger than wood. Vinyl also expands at seven times the rate of Ultrex, making Ultrex the best choice. Because of its incredible durability and strength, Ultrex fiberglass outperforms all other replacement window materials and will look great for years to come.

Appearance and Design

Advances in technology have made it possible to purchase high performance, long-lasting replacement windows that look great too.

Look for a narrow window profile. The narrower the profile, the more space can be used for glass, letting in more light and enhancing your view. A replacement window should also blend in seamlessly with your home, so choose a window that complements your interior. EverWood®, available exclusively on Infinity replacement windows, looks, feels, paints and stains like wood to match your décor, yet is inorganic and requires no maintenance.

Reliability and Expertise

There are hundreds of window manufacturers in the marketplace today. How do you know who to trust? Will the manufacturer you choose still be in business in 10 years from now if you have a service need?

Choose a window manufacturer who is well-established and has an excellent reputation. Ask around to see who has been satisfied with the installation and service they received when replacing their windows.

Total Value

To ensure the best value, look for a manufacturer known for their reliability and expertise and a product that delivers it all – excellent performance, superior materials and unmatched appearance and design – all at a competitive price.

To learn more about replacing your windows and to learn more about Infinity Replacement Windows from Marvin, please call (303) 794-0490 or drop us an email today!

Gravina’s Window Center Blog
Denver Replacement Windows by Gravina’s Blog
Denver, CO

Coco+Kelly Tours Marvin Windows and Doors


A few months ago we started working with a client who is building her dream house. And, since we started, I can say that the number one conversation we’ve had about the exterior has been windows.

I’ve always pointed out how the right windows really make the space (read just about any Room of the Week post if you don’t believe me!) and so it was only fitting that I get to visit the Marvin Windows & Doors headquarters in Warroad, Minnesota with ELLE DECOR and House Beautiful a few months back to experience the process they go through to make their stunning windows and doors…



You know when people are passionate about what they do, it makes you passionate about what they do? Well, if I thought I had a thing for windows before, now I’m really in love. And how could you not be, with a company that can make stunning custom pieces for historical renovations…


As well as everyday windows that are practical, functional, and of the highest quality…


But it wasn’t just the product I was impressed with – everything from green practices (exceptional!) to their company culture (it’s basically one big family) was admirable. We toured the Marvin museum which gave us insight into how the company has basically built the town of Warroad, and does so much more to take care of their own. They are also currently operated by the 4th generation of Marvin family members – also impressive – and speak so much to their dedication to their community.

And then, of course, there’s the biggest test. Would I recommend them to my client? Heck yeah.

See their Youtube Video here

Article source here

Gravina’s Window Center Blog
Denver Replacement Windows by Gravina’s Blog
Denver, CO