Window & Door Replacement in Thiensville

Energy-Efficient Window & Door Replacement in Thiensville

New windows and doors can transform how your home looks and feels. Steadfast Construction replaces drafty or outdated units with high-quality, energy-efficient options that match your style and boost home value.



From bay windows and sliding doors to custom front entries, we install with care—ensuring proper flashing, insulation, trim, and long-term durability. We’re proud to help Thiensville homeowners improve comfort, energy savings, and security.

An empty sun room with lots of windows and doors leading to a deck.

Why Upgrade with Steadfast

01

ENERGY STAR® & High-Performance Options

Low‑E, double/triple‑pane, and ENERGY STAR® options to handle Wisconsin seasons.

02

Improved Security, Quiet & Comfort

Modern hardware and tight weather‑sealing for safe, quiet interiors.

03

Style to Match Any Home

Craftsman, contemporary, and classic profiles to match your home’s architecture.

04

Proper Installation Every Time

Careful removal, flashing, insulation, and trim for long‑term performance.

OUR PROCESS

Step 1

In‑home consultation and measurements

Step 2

Product and hardware selection

Step 3

Removal and clean installation

Step 4

Final walkthrough and warranty details

See window and door upgrades across Thiensville, Mequon, and North Shore suburbs.

Get Inspired: Check out this blog!

Replacing windows and doors in Thiensville, Mequon, Cedarburg, Grafton, Bayside, and Fox Point.

FAQS

  • What window brands do you install?

    We work with trusted brands known for quality, performance, and warranty coverage.

  • Do you offer custom entry doors?

    Absolutely. We offer a wide range of styles, colors, and hardware.

  • Can you help me choose the right doors and windows?

    Absolutely. We guide you through the process based on your home and needs.

Upgrade Your Thiensville Home

Let’s improve your home’s comfort, efficiency, and appearance—beautifully.