Egress Window Installation Step by Step: The Full Process in Colorado

Understanding the Egress Window Installation Process Step by Step

If you're planning to finish your basement or convert it into a bedroom in the Denver metro area, an egress window isn't just a nice addition—it's often a legal requirement. Colorado building codes mandate that bedrooms have a second means of egress in case of emergency, and egress windows are the most practical solution for below-grade spaces.

As Denver's egress window experts since 1999, we've completed thousands of installations across the Front Range. Whether you're dealing with Colorado's heavy clay soils, rocky subgrades near the foothills, or the standard construction challenges of metro Denver, understanding the installation process helps you prepare for what's ahead. Here's what happens from start to finish.

Phase 1: Assessment and Planning

The process begins long before any concrete gets cut. During a free estimate, our team evaluates your basement wall, measuring dimensions and assessing the surrounding landscape. In Denver, this matters because our intense afternoon thunderstorms and spring snowmelt require proper drainage planning. We'll check for:

• Wall thickness and composition (brick, block, or concrete)
• Soil composition and drainage patterns specific to your neighborhood
• Existing utilities and structures near the installation site
• Local building code requirements for your specific jurisdiction within the Denver metro
• Interior and exterior space constraints

Colorado's Front Range soil varies significantly—Denver typically has expansive clay, while foothills properties often encounter rock. This assessment determines whether standard installation will work or if we need specialized equipment or techniques.

Once we understand your situation, we'll recommend the right window size and style. Colorado building codes require that egress windows meet specific dimensions: typically at least 5.7 square feet of openable area and minimum dimensions of 20 inches wide by 24 inches high. The opening needs to be low enough that someone can exit safely—usually no higher than 44 inches from the floor.

Phase 2: Concrete Cutting and Excavation

Installation day arrives, and this is where precision matters. Our team begins by carefully cutting the opening in your basement wall. In Denver-area homes, this typically means cutting through 8-12 inches of concrete, sometimes hitting rebar or encountering unexpected obstacles in older homes.

We use professional-grade concrete cutting equipment that minimizes dust and vibration—important considerations for homes built close together, as many Denver neighborhoods are. The cut opening is sized slightly larger than the final window frame to allow for proper installation and waterproofing.

Once the opening is cut, we excavate the exterior area to accommodate the window well. Here's where Colorado's weather and soil conditions really come into play. Our team digs to appropriate depth (usually 12-24 inches depending on your window size and local frost line requirements), accounting for Colorado's 3-foot frost depth in the Denver area. We also ensure proper grading to direct water away from your foundation—critical in a state that experiences both heavy spring runoff and occasional summer flash flooding.

Phase 3: Installation and Waterproofing

With the opening prepared, we install the egress window frame, ensuring it's level, plumb, and properly secured. This is non-negotiable—a poorly installed frame can lead to water intrusion problems that compound during Colorado's temperature swings and moisture cycles.

Waterproofing is the next critical step. We apply professional-grade waterproof sealants and membranes to create a moisture barrier. This protects your basement from the heavy spring snowmelt that's common along the Front Range and from the occasional intense Denver afternoon thunderstorm.

The window well installation follows. We set a metal or plastic well (we'll discuss which works best for your situation), ensuring it's properly graded and includes a drain or sump connection if needed. Many Denver basements benefit from a drain system—our team can recommend the right setup based on your home's location and existing drainage.

Phase 4: Finishing and Final Inspection

We backfill around the well and window frame, taking care to compact soil properly to prevent settling—something we've perfected across Denver's varied terrain. Interior finishing includes installing the interior trim and ensuring smooth operation of your new window.

Most Affordable Egress Co. installations are completed in a single day, meaning minimal disruption to your home. We'll walk you through proper operation and maintenance before we leave, and we stand behind our work with professional craftsmanship.

Before you proceed with any egress window installation in Colorado, it's worth getting a professional assessment. Building codes in Denver, Boulder, Westminster, and surrounding areas have specific requirements, and local inspectors will verify your installation meets all standards. When you're ready to move forward, our team is here to handle every step with the expertise we've developed over two decades serving the Denver metro and Front Range. Contact us today for a free, no-obligation estimate and let's get your basement project on track.