Window & Door Replacement in Westminster & Denver
The EPI Window & Door Advantage
New windows and doors can transform your home's efficiency and appearance. Here's why our installations last.
Energy Efficient
Low-E glass, argon-filled panes, and proper insulation cut energy bills by 20-30%. Your home stays comfortable year-round.
Perfect Fit
Every window and door is precisely measured and custom-ordered to fit your openings. No gaps, no drafts, no compromises.
Quick Installation
Most window replacements take just 30-60 minutes per window. Your home is never left open to the elements overnight.
Top Brands
We install Andersen, Pella, Marvin, and other leading window and door brands — backed by manufacturer and labor warranties.
Our Window & Door Services
From single window replacements to whole-house upgrades, we handle every aspect of window and door installation.
Window replacement
Double-hung, casement, sliding, picture, and bay windows — vinyl, fiberglass, and wood frames to match your home’s style.
Entry Door Installation
Steel, fiberglass, and wood entry doors with decorative glass, sidelights, and transoms. Heavy-duty hardware and deadbolts included.
Patio & sliding doors
Sliding glass doors, French doors, and bi-fold patio doors that connect your indoor and outdoor living spaces seamlessly.
Storm Doors & Screens
Full-view, retractable-screen, and ventilating storm doors that protect your entry door and add natural airflow.
Ready for New Windows & Doors?
Get a detailed, no-obligation estimate for your window and door project. We'll walk you through materials, timelines, and pricing — no pressure.
