Trust the Home Exterior PROS at Millennium

Why jeopardize your well-being and comfort? Our experience and respect for your busy schedule ensure a clear home improvement experience and top-quality result, all with limited disruption.

Choose High-Performance Vinyl Siding from Norandex

Millennium Windows & Siding works with premium vinyl siding from Norandex, so your home’s exterior remains beautiful for years. Across the US, vinyl has been the #1 choice of homeowners for more than 20 years.

Why? Vinyl siding is flexible, so it will not chip. It does not need to be painted. It requires little maintenance. And it is available with insulating options that increase the energy-efficiency of your home.

Vinyl siding also is available in a wide variety of styles and colors. Learn more about Millennium Windows & Siding’s vinyl siding offerings here.

high performance vinyl siding
mastic vinyl siding
insulated backed vinyl siding

James Hardie is the #1 Fiber Cement Siding Manufacturer

For a durable, fire and weather-resistant siding that increases a home’s curb appeal and value, Colorado homeowners choose James Hardie siding. Millennium Windows & Siding delivers competitive pricing and expert siding installation to maximize your siding investment.

James Hardie siding can be expected to stand up to the frequent Colorado hailstorms, ice, snow, and wind. For homes in areas at risk for wildfires, the fire-resistant nature of James Hardie fiber cement siding is an added value.

James Hardie siding is available in a variety of colors and styles, and for a range of budgets. Learn more about this superior siding product here.

james hardie siding
fiber cement siding
high performance vinyl siding

Choose LP® SmartSide® For Durability Plus the Beauty of Wood

Engineered wood siding from LP is the choice of many who prefer the traditional look of wood siding. LP SmartSide delivers the visual appeal of wood with additional durability that ordinary wood siding cannot match.

For those who would like to avoid the cost of repainting their home, Millennium Windows and Siding offers LP DiamondKote®, a pre-finished version of LP SmartSide that is backed by a 30-year no-fade warranty. Learn more about this alternative to standard wood siding here.

wood siding

Get a free quote today!


At Millennium Windows & Siding, you work directly with the owner eliminating the salesman's high commission.

Once a contract is signed and approved, Millennium Windows & Siding will not change the price of your project for any reason. There will never be any additional fees and/or costs added to your home project.


Our products are backed by our true 100% lifetime warranty* with no trip fee and no labor fee!

* Includes window frame, operators, seal and glass. Call (720)508-4385 for details.

An investment in new windows or siding from Millennium Windows & Siding will increase the value of your home, because our warranty transfers to new the homeowners when you sell.

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Google 5 star reviews
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Angie's list
Better Business Bureau Accredited Business
Yelp 5 star rating
Yelp 5 star rating