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Best Egress Window Replacement & Installation in Kentucky Ranked
Adding an egress window is one of the most significant safety and value upgrades you can make to your Kentucky home. These specially sized and installed windows provide a critical emergency escape route from bedrooms and basements while also bringing in natural light and ventilation. If you're considering this project, understanding Kentucky's specific building codes, the installation process, and how to connect with qualified local professionals is essential for a safe, legal, and successful outcome.
This guide will walk you through everything you need to know about egress window requirements and installation in the Bluegrass State. You'll learn about the precise size and operational rules, what to expect with costs and the installation process, and how to effectively evaluate and hire a trusted contractor for the job.

B-Dry Systems of Louisville, Inc.
6228 Strawberry Ln, Louisville, KY 40214
B-Dry Systems of Louisville, Inc. is an egress window contractor based in Louisville, KY, specializing in waterproofing and basement repair services. They provide installation of egress windows, sump pumps, and crawl space drainage solutions across Kentucky and Indiana.

Hilbert Home Improvement
louisville
Hilbert Home Improvement is a Louisville, KY-based contractor specializing in home remodeling and egress window installation. They serve homeowners and apartment complexes, ensuring safety and code compliance with custom egress windows and basement waterproofing solutions. Fully licensed and insured, the family-owned business has been operating since 2019 and focuses on quality craftsmanship and personalized service.

BWDS. Best Window & Door Systems.
111 Olympic Dr 2nd floor, Nicholasville, KY 40356
BWDS. Best Window & Door Systems. offers European-style tilt and turn windows, sliding glass doors, and egress window installations in Lexington, KY. Their products combine advanced European engineering with local assembly to provide energy-efficient, secure, and versatile window and door solutions suitable for residential and commercial projects. BWDS specializes in windows that offer dual-function opening for ventilation and access, superior thermal insulation, and multi-point locking for enhanced security. The company maintains a large inventory for fast delivery and meets all relevant U.S. quality and safety standards.
Understanding Kentucky Egress Window Codes
Egress window regulations are not just suggestions; they are enforceable building codes designed to save lives. In Kentucky, these rules are based on the International Residential Code (IRC), with potential local amendments. Compliance is mandatory for any bedroom or habitable basement space to be considered a legal sleeping area 1.
The core purpose is to create a clear, unobstructed passage large enough for a firefighter wearing full gear to enter and for occupants to escape. Here are the key requirements for the window itself in Kentucky:
- Minimum Clear Opening: The net openable area must be at least 5.7 square feet (5.0 sq. ft. if the window is at or below ground level) 2 3 4.
- Minimum Dimensions: The opening must be at least 24 inches high and 20 inches wide 2 5 6. These are minimums; the clear opening area is the critical measure.
- Maximum Sill Height: The bottom of the window opening cannot be more than 44 inches above the finished floor 2 3 5. This ensures occupants, including children, can easily reach and climb out.
- Operability: The window must open fully and easily from the inside without the use of keys, tools, or special knowledge. Locks, if present, must be simple and operable at all times 4 6.
Egress Window Well Requirements
If your window is below grade, it will require a window well. This isn't just a hole in the ground; it has its own set of safety codes to prevent it from becoming a trap.
- Well Size: The well must provide at least 9 square feet of clear floor area, with a minimum projection (distance from the foundation) and width of 36 inches 2 4 7. This gives a person enough space to stand and climb out.
- Ladders or Steps: A permanent ladder or steps are required if the well depth exceeds 44 inches 2 6. Rungs or steps must be spaced no more than 18 inches apart, and ladders must be at least 12 inches wide 7.
- Drainage: Proper drainage at the bottom of the well is crucial to prevent water accumulation and potential basement flooding. This is often addressed with gravel and a drain pipe connected to your foundation drainage system 8.
The Installation Process: What to Expect
Installing an egress window is a major construction project that involves excavation, precise concrete cutting, structural considerations, and waterproofing. A typical professional installation follows these general steps:
- Site Inspection & Planning: A contractor will assess your basement wall, determine the best location, check for underground utilities, and help you select a window that meets code and suits your needs.
- Excavation: The area outside the foundation is dug out to provide access for cutting and to create space for the window well.
- Cutting the Foundation: Using specialized saws, a precise opening is cut into the concrete or concrete block wall. This step requires skill to maintain structural integrity.
- Installing the Window Buck/Frame: A waterproof, structural frame (often a treated wood or composite buck) is secured into the new opening.
- Window Installation: The egress window unit (commonly a casement or slider for maximum clear opening) is installed into the frame, sealed, and insulated.
- Building the Well: The window well (metal or plastic) is placed, secured to the foundation, and connected to the drainage system. A permanent ladder is installed if needed.
- Backfilling & Finishing: The area around the well is backfilled with gravel for drainage, and the interior window trim is finished.
Cost Factors for Egress Windows in Kentucky
The total cost of an egress window project in Kentucky varies significantly based on size, materials, and site complexity. Here is a general cost breakdown based on industry estimates 9:
- Minimum Code Window (e.g., 24" x 36"): Installing a basic, code-compliant window typically ranges from $2,500 to $4,000 or more. This includes the labor-intensive work of excavation and concrete cutting.
- Standard or Larger Window (e.g., 30" x 48"): For a larger window that provides more light, expect costs between $3,500 and $6,000+.
- Larger or Custom Windows: Bigger windows, custom shapes (like circle-tops), or high-end materials can raise the price to $5,000 to $8,500+, with some complex projects exceeding this range 9.
Key factors influencing cost include:
- Window Type & Size: Casement windows are popular for egress. Larger sizes and custom shapes cost more.
- Foundation Material: Cutting through thick, reinforced concrete is more labor-intensive than block.
- Excavation Difficulty: Rocky soil, steep slopes, or limited access can increase labor time.
- Window Well Materials: Corrugated metal is standard; more durable polymer or stone-lined wells cost extra.
- Interior Finishing: Repairing and finishing the interior drywall and trim adds to the project scope.
- Permits: Your local city or county will require a building permit, which has an associated fee.
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Choosing the Right Window Style
While the opening must meet code, you have choices in the style of window you install. The most common and practical choices for egress are:
- Casement Windows: These are the top choice for egress. They are hinged on the side and crank open to provide 100% of their clear opening, making it easy to meet size requirements. They also offer excellent energy efficiency and security.
- Sliding Windows: Also a good option, sliding windows (or sliders) open by moving one sash horizontally. They provide a large, low-sill opening but typically only offer 50% of their total width as the clear opening, so the overall unit size needs to be larger.
- Double-Hung Windows: These are generally not suitable for egress because the opening created is only half the total window height, making it very difficult to achieve the required 5.7 sq. ft. clear opening without an impractically large window.
Why Professional Installation is Non-Negotiable
This is not a DIY project for the vast majority of homeowners. The risks of improper installation are severe:
- Structural Compromise: Incorrectly cutting a load-bearing foundation wall can threaten your home's stability.
- Water Infiltration: Improper sealing and drainage are the leading causes of basement leaks and mold after egress window installation.
- Code Violations: Failure to meet exact code specifications can result in failed inspections, fines, and an unsafe window that may not serve its life-saving purpose. It can also create major issues when you try to sell your home.
- Safety Hazards: From excavation cave-ins to operating concrete saws, the process involves significant physical danger.
A licensed, insured, and experienced contractor will handle the permit process, ensure code compliance, manage the structural and waterproofing challenges, and provide a warranty on their work.
Preparing for Your Project
To get started on the right foot:
- Check Local Requirements: Contact your local building department to confirm code specifics and permit requirements for your area.
- Define Your Goals: Are you primarily adding a legal bedroom, creating a safer basement family room, or just adding more light?
- Budget Realistically: Use the cost ranges above as a guide and plan for a contingency fund for unforeseen issues.
- Research Contractors: Look for professionals with specific, verifiable experience in egress window installation. They should be familiar with Kentucky's IRC codes and local soil conditions.
Frequently asked questions
Sources
Footnotes
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2018 Kentucky Residential Code - https://dhbc.ky.gov/Documents/2018%20Kentucky%20Residential%20Code%20-%20CLEAN_FINAL%207.17.20.pdf ↩
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IRC Codes In Kentucky | KY Egress Window Requirements - https://windowwellexperts.com/irc-codes/kentucky/ ↩ ↩2 ↩3 ↩4 ↩5
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Egress Windows Kentucky - https://surewindows.com/ky/egress-windows-kentucky ↩ ↩2
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Egress Windows Guide: Codes, Sizes, Costs & Best Picks - https://www.aprodoor.com/egress-windows-guide/ ↩ ↩2 ↩3
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IRC Egress windows 2021.pdf - https://cms7files1.revize.com/roycityut/Departments/building%20permits%20inspections/handouts/IRC%20Egress%20windows%202021.pdf ↩ ↩2
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Egress Window Requirements | IRC Code for Fire Safety - https://www.egresswindows.com/its-the-law ↩ ↩2 ↩3
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Egress Windows - Sizing and Requirements Explained! - https://www.buildingcode.blog/blog/egress-windows-sizing-and-requirements ↩ ↩2
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Egress Windows - B-Dry Louisville - https://bdrylouisville.com/egress-windows/ ↩
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How Much Do Egress Windows Cost? - https://www.thegreategressco.com/blogs/egress-window-blog/how-much-do-egress-windows-cost ↩ ↩2