Window Replacement

About the Service

Minnesota homeowners face unique challenges when it comes to windows. With temperatures dropping below zero for weeks at a time and over 7,800 heating degree days annually, the performance of your windows directly impacts your comfort and energy costs.

At Zablocki Roofing & Exteriors, we specialize in window replacement for Central Minnesota homes. Whether you're dealing with condensation between panes, drafts around frames, or windows that no longer operate smoothly, our team delivers professional installation backed by our commitment to quality craftsmanship.

We work with ENERGY STAR certified products designed for northern climates — triple-pane glass, low-E coatings, and insulating gas fills that keep your home comfortable even when temperatures plunge.

Energy Savings That Pay Off

Old or inefficient windows can account for 25–30% of your home's heating energy loss. Upgrading to ENERGY STAR certified windows makes a measurable difference — saving $101–$583 annually in cold climates, reducing drafts, and increasing your home's resale value.

Types of Replacement Windows We Install

Double-Hung Windows

The most popular choice for Central Minnesota homes. Both sashes move up and down for easy interior cleaning — a real advantage in long winters. Excellent summer ventilation, tight winter seal.

Casement & Awning Windows

Crank open outward for an exceptionally tight seal when closed — ideal for Minnesota's climate. Great for hard-to-reach spots like above kitchen sinks or in basements.

Bay & Bow Windows

Add dimension and natural light to any room. Expert flashing and insulation during installation is critical in Minnesota to prevent ice dam damage and air leaks.

Picture Windows

Unobstructed views and the best energy efficiency of any window style since they don't open. We recommend triple-pane glass on larger openings to minimize heat loss.

Slider Windows

Ideal where swing clearance isn't practical. Quality sliders feature multiple weatherstripping contact points and interlock when closed — essential for keeping cold air out.

What Makes a High-Performance Window for Minnesota?

U-factor is the most important number to understand — it measures how well a window prevents heat from escaping. Lower is better. For our climate, look for:

• Low-E coating optimized for heating climates (high solar heat gain coefficient)

• Triple-pane glass for maximum insulation value

• Argon or krypton gas fill between panes

• Fiberglass or composite frames that won't warp through freeze-thaw cycles

A window with a U-factor of 0.18 vs. 0.30 means noticeably warmer glass surfaces, fewer drafts, and real savings over Minnesota's 6-month heating season.

Low-E Glass

A microscopically thin metallic coating that reflects heat back into your home in winter and blocks solar heat in summer. Invisible to the eye — no effect on your view. In Minnesota, it's essential, not optional.

Understanding Window Condensation

• Condensation on the inside surface — typically high indoor humidity. Proper ventilation usually resolves it.

• Condensation between the panes — seal failure. The insulating gas is gone and the window no longer performs as designed. Time to replace.

• Condensation on the outside — actually good news. It means the outer pane is staying cold because the window is doing its job.