K Windows · Est. 1957
Window & Door Craftsmanship Since 1957
Three generations serving Lake County and Chicago's western suburbs.
We focus on precise measurement, proper fit, secure sealing, and clean, detail-driven work — because craftsmanship shows in the details.
Window Replacement
Window replacement in Lake County and the western suburbs covers a wide range of housing ages and conditions. We assess each opening individually and explain the correct approach — insert replacement within a sound frame, or full-frame removal and rebuild — based on actual frame condition, sill integrity, and surrounding construction.
All replacement windows we install use insulated double-pane glass with low-E coatings and argon fill as standard. Glass package, frame material, and operating configuration are matched to the home's needs.
Window Replacement in Lake County →Entry Door & Patio Door Replacement
Entry door and patio door replacement addresses both performance failures and appearance priorities. We replace doors as complete systems — door, frame, threshold, weatherstripping, and hardware — so every component is new and properly integrated.
Patio door replacement covers sliding door systems, hinged French door configurations, and sliding-to-hinged conversions. We work with HOA boards and property managers on multi-unit door programs requiring documentation, phased scheduling, and product specification compliance.
Door Replacement in Lake County →Contractor & HOA Support
HOA door replacement and multi-unit window programs require documentation, scheduling discipline, coordination with boards and property managers, and the ability to complete work on occupied buildings without disrupting residents.
For general contractors coordinating window and door replacement as part of a larger renovation, we work within the project schedule, coordinate with other trades, and deliver our portion of the work on time and to spec.
Discuss an HOA or Contractor Project →Our Installation Process
Every project follows the same disciplined sequence — from the first site visit through the final walkthrough.
01
Site Evaluation
We visit your home or property in person. We inspect every opening you want evaluated — frame conditions, sill integrity, hardware, and any moisture or structural issues — and discuss what we find with you directly.
02
Written Estimate
You receive a written proposal covering scope, products, and pricing. No verbal estimates, no ambiguous line items. You know exactly what you're getting before any work is scheduled.
03
Material Guidance
We walk through product options based on your home's construction, orientation, and your priorities — whether that's energy performance, appearance, durability, or all three.
04
Precise Measurement
Every opening is measured to the tolerances required for a clean, weathertight installation. We don't estimate measurements — inaccurate sizing is one of the most common causes of poorly installed windows and doors.
05
Clean Installation
Our own crew completes the installation on the scheduled date. We use appropriate flashing, sealing, and trim materials for each specific application. Work areas are kept organized and clean throughout the project.
06
Final Walkthrough
Before we leave, we walk through every installed unit with you — operation, seals, hardware, and finish. If anything needs attention, we address it before the job is considered complete.
Start with an Honest Estimate
We visit in person, assess the actual conditions, and give you a written proposal with clear scope and pricing. No pressure, no manufactured urgency.