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Home Window installers serving Colorado.

Our American Made windows are designed for our unique Colorado Climate.

Because every WestPro window installation is performed by Factory Certified Installers, your windows come with a Lifetime Product and Lifetime Workmanship Warranty, the strongest warranty in the window industry.

Add style and value to your home with Colorado Series Windows by WestPro.

From measurements to manufacturing, to installation, our process
makes it easy to get the windows you want, at an affordable price.

Colorado Window

Our most popular window option, the Colorado Window is designed specifically for our Colorado climate. This simple, sleek window gives you the features you need to improve the efficiency, style, and comfort of your Longmont home, at an affordable price.

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Triple Pane Glass provides upgraded noise resistance and energy efficiency, keeping your home quiet and comfortable. Comfort Max-Frame is filled with insulating foam, reducing heat transfer in the window frame, keeping your home cool in the summer and warm in the winter.

Low E ELITE Coating provides maximum protection against harmful UV rays that can damage floors, rugs, and furniture.

Glass Breakage Warranty protects your investment against accidental glass breakage. A foul ball from your neighbor’s kids? We’ll fix it for free.

Lifetime Product and Installation Warranty ensures that if you ever have a problem with our windows or our installation, we will fix it. There’s no cost to you, ever.

Comfort Max Frame reduces heat/cold transfer, while eliminating drafts & air leakage.

Summit Window

Summit Windows by WestPro includes all the features of our popular Colorado Window, but with upgraded triple-pane glass and upgraded LowE ELITE glass coating.

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Triple Pane Glass provides upgraded noise resistance and energy efficiency, keeping your home quiet and comfortable. Comfort Max-Frame is filled with insulating foam, reducing heat transfer in the window frame, keeping your home cool in the summer and warm in the winter.

Low E ELITE Coating provides maximum protection against harmful UV rays that can damage floors, rugs, and furniture.

Glass Breakage Warranty protects your investment against accidental glass breakage. A foul ball from your neighbor’s kids? We’ll fix it for free.

Lifetime Product and Installation Warranty ensures that if you ever have a problem with our windows or our installation, we will fix it. There’s no cost to you, ever.

Comfort Max Frame reduces heat/cold transfer, while eliminating drafts & air leakage.

Basic Window

The name says it all. Our Basic window will improve the look and comfort of your home at a very comfortable price. Even our most budget-friendly window still comes with our Lifetime Installation Warranty.

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Triple Pane Glass provides upgraded noise resistance and energy efficiency, keeping your home quiet and comfortable. Comfort Max-Frame is filled with insulating foam, reducing heat transfer in the window frame, keeping your home cool in the summer and warm in the winter.

Low E ELITE Coating provides maximum protection against harmful UV rays that can damage floors, rugs, and furniture.

Glass Breakage Warranty protects your investment against accidental glass breakage. A foul ball from your neighbor’s kids? We’ll fix it for free.

Lifetime Product and Installation Warranty ensures that if you ever have a problem with our windows or our installation, we will fix it. There’s no cost to you, ever.

Comfort Max Frame reduces heat/cold transfer, while eliminating drafts & air leakage.

Patio Doors

Patio doors by WestPro are made to complement our line of Colorado Series Windows.

French Rail provides a clean, classic look as well as the sturdiness that’s necessary for a frequently used sliding patio door.

Double Pane, 1” Thick Glass is double strength, and tempered for durability and safety.

Low E Coating provides maximum protection against harmful UV rays that can damage floors, rugs, and furniture.

Glass Breakage Warranty protects your investment against accidental glass breakage.

Lifetime Product and Installation Warranty ensures that if you ever have a problem with our windows or our installation, we will fix it. There’s no cost to you, ever.

There’s no cost to you ever.

The Lifetime Product and Window Installation Warranty ensures that if you ever have a problem with our windows or our window installation services, we will fix it. Our glass Breakage Warranty protects your investment against accidental glass breakage.

Free window inspections
and estimates from
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    Call us

    (303) 834 - 9236

    Monday – Friday
    8:30 am – 5 pm

    Here's the plan:
    • We’ll consult with you, by email or phone
    • We will ask you a few questions and schedule an appointment.

    Here's how we can help you

    1

    Inspections

    Let us take a look.

    Our friendly, uniformed consultant performs complete inspections for your roof, siding, windows and gutters. We then take measurements to diagnose a solution, all while getting to know you and your home.

    2

    Estimates

    Consider your options.

    We provide you with estimates and samples that meet the needs of your project and budget. We work with you to decide the pricing, style and colors that work for you.

    3

    Financing

    Keep it simple.

    We accept all major credit cards, cash and checks. We also offer affordable monthly payments and can get you approved for financing in less than 10 minutes.

    4

    Get it done

    Hassle no more.

    We order materials and schedule your installation. We handle all debris removal, building permits and logistics – you pay us when you are 100% satisfied.

    Why Choose Colorado Series Windows By WestPro?

    Low E Coating provides maximum
    protection against harmful UV rays that
    can damage floors, rugs, and furniture.

    Colorado Series Windows™ by WestPro

    Built for Life
    • Easy tilt window sash makes window cleaning a breeze.
    • Smooth latches and cranks make opening and closing easy.
    • Durable Window Locks keep your home safe and secure.
    Build for Efficiency
    • Argon filled Glass provides ‘invisible insulation’ that keeps your heating and cooling bills at bay.
    • Comfort Max Frame Reduces Heat/Cold Transfer, while eliminating drafts & air leakage.
    Built for Colorado
    • Thermal Spacer allows windows to expand and contract, keeping the window from being damaged during the extreme temperature shifts from Summer to Winter.
    • LowE and LowE Elite glass blocks excessive sunlight.

    Window replacement frequently asked questions.

    Between 15 and 20 years

    Many window design professionals agree that new, quality windows should last between 15 and 20 years before you start to think about replacing them. Most companies producing vinyl windows often provide a 20-25 year warranty, which is essentially a lifetime warranty – the expected lifetime of the product.

    With a replacement window insert, the old interior and exterior trim is undisturbed and remains intact. The exterior wood components are completely custom wrapped in an aluminum material that is color-matched to your home’s trim and the window color.

    Replacing a window costs an average of $300 to $700 each. This assumes that the replacement is going into an existing and structurally sound frame on the ground floor. Replacing everything in a typical three-bedroom, single-story home with ten openings can range from $3,000 to $7,000.

    Dual-pane glass insulates almost twice as well as single-pane, while triple-pane glass maximizes your energy efficiency. Inert argon gas can be used between panes of glass to improve insulating properties and help reduce thermal transfer.

    People love what we do

    Brooke T. Longmont, CO

    I would highly recommend WestPro to anyone here in the area. Justin was thorough and provided amazing customer service. Should we need any siding or window repair in the future, we will definitely be calling them first!

    5/5
    Anon M. Boulder, CO

    Nice to have a locally owned and operated company that cares not only about the quality of their installation, but also about the availability and professionalism shown in their customer service and administrative departments.

    5/5
    David G. Dacono, CO

    WestPro showed up right on time. That means a lot to me due to my very busy schedule. A detail that I dislike with other companies but WestPro was flawless at, is their communication. I had a phenomenal experience and the quality of my windows is superior, so I just wanted to thank you again, WestPro. 5 stars hands down.

    5/5

    Read all of our reviews online