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Northern Lights Exteriors is a Leading Window Companies Denver that Installs all Types of windows

Here are the types of windows we install and how they function:

Single Hung

Single hung windows consist of two sashes. The top sash is stationary, and the bottom sash slides up to open. The bottom sash also tilts inwards for easy cleaning from inside your home. Since single hung windows do not open outward, they are ideal for rooms near shrubs, trees, walkway, and patios.

Double Hung 

Double hung windows consist of two operable sashes. Both sashes can open at the same time for more air circulation and they tilt in for easy cleaning from inside your home. Since double hung windows do not open outward, they are ideal for rooms near shrubs, trees, walkways, and patios.


Awning windows are hinged on the top and open outward from the bottom with an easy to use crank operation. They allow for ventilation and protection from the rain.


Single slider windows have one sash that is fixed, while the other sash opens and closes by sliding from side to side. Since single slider windows do not open outward, they are ideal for rooms near shrubs, trees, walkways, and patios.

Bay & Bow

Bay and bow windows make any room feel larger, broaden your view and welcome in more light. Bay windows have three panels and offer a more pronounced, angular projection. Bow windows have four or more panels allowing for a more gentle, rounded appearance. They can be made with any combination of picture, double hung, and casement windows.


Picture windows offer clear views and welcome in natural light, making any room feel bigger and brighter. Because they do not open, picture windows have no moveable sashes or hardware to obstruct the view.


Casement windows offer the unobstructed view of picture windows, but with the benefit of opening for air circulation. They are hinged on the side and swing outward with an easy to use crank operation.


Specialty windows include window shapes that do not have four 90º corners, such as half-rounds, French arches, trapezoids, and triangles. They can be a bold architectural element that adds natural light and visual interest to your home.

Click to learn about window replacement material options and common questions about our services. We proudly offer the following replacement windows:

Customizing Your New Replacement Windows

Our window companies Denver team will spend the time to listen to what your needs are for your window replacement project and make recommendations based on what will match your vision. From there we will help you select the Brand, such as Anderson or Pella, the glass type, noise reduction features, safety and security locks and smart window technology, handle types…you name it. The fun part about this process is you’ll enjoy working with our team and we’ll help you all along the way. We know a window project can be a big investment (no matter the size of the project), we’ll make sure we make good use of our time together and get your project moving forward.

Why Work With a Local Contractor

Our reputation is everything. Every job, every review, every install means something to our business. Negative experiences don’t get buried by 1000’s of reviews that pulled together by national accounts. We work, play, go to school, and volunteer within our community. We have built a brand that our clients trust since 2001. As far as windows – a part breaks, there is a concern, – you aren’t on hold trying to get to a random customer service person… you get us, our team, your Project Manager back out to assist. Plus the manufacturer’s we represent share the same customer service values that we do. We’ve had to get rid of options in the past when warranty work or small fixes just took too long. Contact us today to learn more or to book an appointment. 

Let’s Get Started

No matter how your new windows are designed, your home will benefit from a boost in curb appeal, increased value, and improved energy efficiency that may help lower your monthly energy bills. To learn more about the types of windows we install for homeowners in the northern Colorado area, or to begin designing yours, contact Northern Lights Exteriors today.

Contact us today to tell us about your exterior remodel.
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