Old Windows Are Costing You a Fortune
If your home has single-pane or aging double-pane windows, you're losing up to 30% of your heating and cooling energy right through the glass. In Wisconsin, where winter heating bills can exceed $300/month, that's thousands of dollars wasted every year. Add in drafts, condensation, frost buildup, and UV fading -- and old windows are actively damaging your home and your wallet.
DT Exteriors installs premium double and triple-pane replacement windows with Low-E glass coatings, argon gas fills, and warm-edge spacer technology. These windows are engineered for cold climates and deliver immediate comfort improvements -- no more cold spots, drafts, or ice on the inside of your windows.
Our Window Services
Full-Frame Replacement
Complete removal of old window frame and installation of a new, energy-efficient unit. Ideal for older homes with rotted or damaged frames. Proper flashing and insulation included.
Insert (Pocket) Windows
New window unit installed inside the existing frame -- faster installation, less disruption, and lower cost. Perfect when your existing frames are in good condition.
Triple-Pane Upgrades
Maximum energy efficiency with three layers of glass, two argon gas chambers, and dual Low-E coatings. The gold standard for Wisconsin's extreme winters.
Patio Doors & Specialty
Sliding patio doors, French doors, bay windows, bow windows, and custom shapes. Same premium glass technology in every configuration.
The DT Exteriors Window Process
Free In-Home Consultation
We measure every window opening, assess your frame condition, discuss your energy goals, and provide a transparent, line-item estimate -- no high-pressure sales tactics.
Custom Window Selection
Choose from our premium window lines. We help you select the right glass, frame material, and style for each opening -- optimized for energy performance and aesthetics.
Professional Installation
Factory-trained installers ensure proper fitting, flashing, insulation, and sealing. Every window is leveled, shimmed, and tested for smooth operation before we leave.
Final Walkthrough & Cleanup
We demonstrate every window's operation, clean up completely, and haul away all old windows and debris. Your home will be cleaner than when we arrived.
Want to Learn More?
Read our Complete Wisconsin Window Replacement Guide for in-depth information on window types, energy ratings, double vs triple-pane comparisons, and cost breakdowns.