Business Details
50+ Years
experience
Your Trusted Partner for Window Replacement in Littleton, CO
Gravina's Window Center Of Littleton has been a trusted name in Colorado home improvement since 1973. As a family-owned business with an A+ BBB rating, we specialize in Infinity by Marvin fiberglass windows, premium patio doors, energy-efficient entry doors, and James Hardie siding engineered for Colorado's climate. Our team of Marvin-certified installers delivers full-frame replacements tailored to each home's unique needs, combining 50+ years of experience with cutting-edge materials.We prioritize transparency, offering no-pressure consultations and fixed-price quotes with lifetime workmanship warranties. Our commitment to quality is reflected in hundreds of 5-star reviews and partnerships with industry leaders like Marvin and James Hardie. We serve Denver, Littleton, and the entire Front Range, providing solutions that enhance comfort, durability, and property value while withstanding Colorado's extreme weather conditions.
Services
Fiberglass Windows
Patio Doors
Entry Doors
James Hardie Siding
Bi-Fold Doors
Details
- Year established: 1973
Highlights and features
- 50+ years of Colorado-specific window replacement expertise
- A+ BBB rating with hundreds of 5-star reviews
- Marvin-certified installation team for guaranteed performance
- Lifetime workmanship warranty on all installations
- Energy Star-certified products reducing utility bills up to 37%
Associations and certifications
- Better Business Bureau (BBB)
What people say
Professional, fast, clean team
Top-tier craftsmanship
Knowledgeable and transparent
No high pressure
Lasting results
Services
Fiberglass Windows
Infinity by Marvin fiberglass windows offer 8x greater strength than vinyl with Ultrex material engineered for Colorado's extreme climate. These energy-efficient windows feature Low-E glass and argon gas fills to reduce energy costs by 11-37% while maintaining structural integrity through temperature swings. Available in double-hung, casement, sliding, and specialty shapes with customizable finishes.
Patio Doors
Infinity fiberglass patio doors combine durability with seamless indoor-outdoor transitions. Available as sliding, French, or bi-fold configurations, these doors feature Ultrex frames resistant to warping and multi-point locking systems for security. Energy-efficient glass options maintain thermal performance while maximizing natural light and views.
Entry Doors
Premium fiberglass entry doors from ProVia and Therma-Tru enhance curb appeal while improving home security. Customizable with various finishes and glass options, these doors feature advanced weatherstripping and insulated cores to reduce energy loss and increase property value through lasting aesthetic improvements.
James Hardie Siding
James Hardie fiber cement siding provides superior protection against Colorado's weather extremes. This non-combustible, moisture-resistant material maintains dimensional stability through freeze-thaw cycles while offering paintable surfaces and architectural detailing options to enhance home aesthetics and resale value.
Window Installation
Professional full-frame window installations ensure optimal performance of replacement units. Our Marvin-certified technicians perform precision measurements, remove existing materials completely, and install new windows with proper flashing and insulation to maximize energy efficiency and eliminate air infiltration issues.
People
Jim Gravina
Founder
Founded Gravinas Window Center in 1973, establishing it as Colorado's oldest Infinity by Marvin dealer. Led three generations of family ownership focused on quality craftsmanship and community service.
Dan Marvin
CEO of Infinity
Represents Infinity by Marvin's partnership with Gravinas Window Center, ensuring product quality standards and technical support for Colorado's climate-specific installations.
Questions
What makes fiberglass windows better for Colorado homes?
Fiberglass windows resist warping from temperature swings 87% better than vinyl while maintaining energy efficiency through Colorado's extreme climate conditions.
Do you offer financing options for window replacement?
Yes, we provide 0% APR financing for qualified homeowners with approved credit for projects involving four or more Infinity windows.
Are your installers certified by the manufacturers?
All installations are performed by Marvin-certified technicians who receive ongoing training directly from Infinity by Marvin's technical team.
How long does a typical window replacement project take?
Most residential projects complete within 1-3 days including removal of old windows, installation, and interior trim restoration services.
What areas do you serve?
We serve Denver Metro Area, Littleton, Highlands Ranch, Arvada, Castle Pines, Evergreen, and all Front Range communities up to Boulder.
Do you provide warranties on your work?
We offer a lifetime workmanship warranty covering installation quality alongside manufacturer warranties on all Infinity by Marvin products.
