Call now for Andersen Windows and Doors, 303-794-3192

Gravina’s Window Service was founded by Jeff Gravina, and has grown to be the premiere Andersen Windows and Doors  Window and Door Provider in the greater Denver area. We have built our outstanding reputation on providing superior products, exceptional customer service, and skilled craftsmanship. We started out in the family business, Gravina’s Window Center of Littleton, and have since expanded as a Service Provider for Andersen Windows Corporation.  We feel as if we've grown with our customers, and we've kept our products and services modern with the times.  One thing we are proud of is our professionalism, attention-to-detail and quality products which are built to last.

Arvada Colorado Replacement Windows

Happy Mother's Day 2014


Call now for service!

Remodeling trend brings the indoors out

J.C. Penney Co. among honorees in EPA’s 2015 Energy Star Partners of the Year

Replacement Windows - Patio Doors - Entry Doors


Denver, Littleton, Lakewood, Boulder, Vail, Cherry Hills, Parker, Castle Rock, Breckenridge

Best of Houzz 2014

Double Hung Windows – Why Are They So Popular?

How can I tell if a sliding door needs to be fully replaced or just the glass itself?

Simonton Reflections 5500 Replacement Window

Window Ideas for homes

Style for your home



Making use of your formal dining room for the holidays?

Customer service? It doesn't exist anymore

How to Fix a Squeaky Floor

5 Sustainable Homes That Don’t Skimp on Style

Conduct a fall season home energy audit – energy efficient homes


Window Replacement Denver

Reduce your energy

Energy Apps

The cold is upon us

Secure your new entry door

Tools of the trade

Milgard Window Showroom Goes on Tour

Quite possibly the perfect building material

Marvin insert windows with tough fiberglass exteriors with warm wood interiors

Milgard® Ultra fiberglass French doors and French-style sliding doors

Create the home you deserve video

Milgard SmartTouch Patio Door Handle – Before & After

Small Business Saturday Saturday 2014

The Marvin Way: Commitment and Quality At Every Step

Spring Home Decor Projects

2015 Energy Star Partner of the Year

Interior Design Projects

Millenials are today's home buyer

Ellen Show and Houzz Team Up

Gravina's Window Service

Milgard Tuscany Window

Marvin Ultimate Swinging French Door

Simonton Reflections 5500 Replacement Wiindow

Gravina's Window Center proudly offers Provia Entry Doors

Andersen Double Hung Conversion Kits

Why Is R-Value Important?

Urban Blight Hack: Installing Windows And Doors On Abandoned Buildings Reduces Crime

Areas We Serve

Finishing Replacement Windows

2016 Colorado Garden and Home Show

2016 International Builders Show

What causes condensation in your home?

How can homeowners make the most out of home shows?

Gravina’s Window Center of Littleton Earns Esteemed 2015 Angie’s List Super Service Award

How can homeowners make the most out of home shows?

What is the most energy efficient entry door in the U.S.?

Do you have Andersen Narroline Double Hung Windows in your home? Then make sure you read this article!

Our Signet fiberglass doors have taken fiberglass entry systems to the next level. The embossed woodgrain is an astonishingly accurate representation of real wood.

Top 10 Innovations in Window Technology