Signs It’s Time to Replace Your Windows
If your windows are drafty, hard to open, or fogged up between the panes, you’re not alone. Homeowners across South Dakota, North Dakota, Iowa, Wisconsin, and Minnesota deal with tough winters, hot summers, and everything in between—and your windows are on the front line of all that weather.
New windows can make your home more comfortable, improve your energy efficiency, and boost curb appeal. But what actually goes into replacing a window? And how do you know when it’s a good DIY project versus a job for a professional crew?
At Wolf River Construction, we help homeowners through this decision every day. This guide walks you through the basics of how to replace windows, common mistakes to avoid, and what to expect when you work with a professional installer.
Before you think about tools and materials, it helps to confirm whether your windows truly need replacement or just minor repairs. Common signs it’s time to replace include:
- Drafts and cold spots
On a windy day, you can feel cold air leaking around the frame, or you see curtains moving even when your windows are shut. - Condensation between panes
If you see fog or moisture trapped inside double- or triple-pane glass, the seal has failed, and the window has lost much of its insulating value. - Difficult to open, close, or lock
Windows that stick, won’t stay open, or won’t lock properly are more than an annoyance—they can be a safety and security issue. - Rot, warping, or visible damage
Soft or rotted wood, warped frames, or cracked glass are strong indicators that replacement is a better investment than patching. - Rising energy bills
According to ENERGY STAR, replacing single-pane windows with ENERGY STAR certified windows can save homeowners $126–$465 a year on energy bills, depending on your climate zone and home size (Source: energystar.gov, 2024). In the Upper Midwest, where temperature swings are extreme, the impact can be even more noticeable.
If you’re seeing one or more of these signs, it’s worth taking a closer look at replacement options.
Choosing the Right Replacement Windows
Not all windows are created equal. Before you start pulling out old units, make a few key decisions about what you want to install.
- Window material
- Vinyl:
Popular, low-maintenance, typically the most affordable option. Good durability and energy performance. - Wood:
Classic look and excellent insulator but requires more maintenance and can cost more. - Fiberglass or composite:
Very stable, strong, and energy efficient, with a higher upfront cost but long lifespan.
- Window style
Common types include:
- Double-hung: Both upper and lower sashes can move. Great for ventilation and easy cleaning.
- Casement: Hinged on one side and crank open. Excellent for catching breezes and sealing tightly when closed.
- Slider: Sashes slide horizontally. Simple operation and good for wide openings.
- Picture and fixed: Don’t open, but maximize light and view.
Think about how you use the room, how you want the window to operate, and what works with the architecture of your home.
- Energy efficiency features
In our climate, efficiency is not optional. Look for:
- Double- or triple-pane glass
- Low-E (low emissivity) coatings to reflect heat
- Gas fills (argon or krypton) between panes
- ENERGY STAR certification appropriate for your region
These features help keep your home warmer in winter and cooler in summer, while reducing your heating and cooling costs over time.
Step-by-Step Overview: How to Replace a Window
Every home and window opening is a little different, but most replacement projects follow these general steps. This is an overview, not a full DIY manual—but it will help you understand what’s involved.
1. Measure correctly
Accurate measurements are critical. For a typical “insert” replacement (where the frame stays and you replace the sash and parting stops):
- Measure width at the top, middle, and bottom of the opening; use the smallest measurement.
- Measure height on the left, center, and right; again, use the smallest number.
- Measure depth to confirm the new window will fit within the existing frame.
If you’re unsure, this is where many homeowners prefer to have a professional come out—one wrong measurement can mean a custom window that doesn’t fit and can’t be returned.
2. Prep the area
Inside the home:
- Remove blinds, curtains, hardware, and any trim that needs to come off.
- Lay down drop cloths to protect flooring and furniture.
- Have safety gear ready (gloves, eye protection).
Outside:
- Clear the work area of obstacles and landscaping as needed.
3. Remove the old window
This usually involves:
- Removing stops and sashes carefully to avoid damaging interior trim you want to keep.
- Cutting any caulk or paint that’s sealing the window in place.
- Safely handling and disposing of old glass and frames.
If there is lead paint (common in homes built before 1978), there are specific safety and EPA requirements that professionals are trained to follow.
4. Inspect and repair the opening
Once the old window is out, a good installer will:
- Check the rough opening for rot, water damage, or structural issues.
- Repair or replace any damaged framing or sheathing.
- Confirm the opening is square and level, shimming where needed.
Skipping this step is one of the most common DIY mistakes. A brand-new, high-performance window won’t perform well if it’s installed in a compromised opening.
5. Install and level the new window
The new unit is placed into the opening, then:
- Centered and leveled using a level and shims.
- Temporarily secured, then checked again for smooth operation (opening, closing, locking).
- Fully fastened according to the manufacturer’s instructions (type of fastener, spacing, etc.).
Proper shimming and fastening are essential for long-term performance and to maintain the manufacturer’s warranty.
6. Insulate and seal
To keep drafts and moisture out:
- Low-expansion spray foam or backer rod and sealant is used around the frame (the wrong foam can bow the frame).
- Exterior and interior gaps are caulked and sealed appropriately for your siding and trim type.
- Flashing tape and/or pans may be installed for added moisture protection.
Done right, this step is what separates a truly energy-efficient replacement from one that looks good but still leaks air.
7. Finish the interior and exterior
Finally:
- Interior trim is re-installed or replaced.
- Exterior trim and siding are repaired or updated as needed.
- Surfaces are cleaned, stickers are removed, and hardware is installed.
A professional crew will also clean up the job site and haul away old windows and debris.
DIY vs. Hiring a Professional Contractor
After seeing the steps, the key question is: should you do this yourself?
DIY might make sense if:
- You’re replacing a small number of ground-floor windows.
- The existing frames and openings are in good shape.
- You’re comfortable with carpentry, ladders, and power tools.
- You understand local codes and safety considerations.
Hiring a professional is strongly recommended when:
- You’re replacing many windows at once.
- The home is older and may have structural issues, rot, or lead paint.
- Windows are on upper stories or require scaffolding or special equipment.
- You’re changing the size or style of the opening (e.g., adding egress windows).
- You want full warranty protection from the manufacturer and installer.
- You value your time and want the job done quickly, cleanly, and correctly.
Professional installers like Wolf River Construction handle window projects every day. We know the building codes, we’ve seen the common issues, and we have the tools and crew to get it done efficiently—with far fewer surprises.
What to Expect When You Work With Wolf River Construction
When you schedule a window consultation with Wolf River Construction, here’s what the process typically looks like:
- On-site assessment
We visit your home, look at your existing windows, take accurate measurements, and listen to your goals—comfort, aesthetics, budget, and energy savings. - Product recommendations
We walk through window types, materials, and energy-efficiency features that make sense for your home and climate. We’ll discuss pros, cons, and price ranges so you can make an informed choice. - Detailed quote
You’ll receive a clear, written estimate that outlines the scope of work—how many windows, what type, and what’s included in installation and cleanup. - Scheduling and preparation
Once you’re ready to move forward, we schedule your install and coordinate delivery. We’ll also explain how to prepare each room so the work goes smoothly. - Professional installation
Our crew removes your old windows, repairs and prepares the openings if needed, then installs, insulates, and seals your new units according to manufacturer specs and local building codes. - Cleanup and walkthrough
We dispose of old windows and debris, then walk you through how to operate and care for your new windows. We’ll answer questions and confirm you’re satisfied before we wrap up.
Our goal is simple: make your home more comfortable, efficient, and beautiful—with as little disruption to your daily life as possible.
Ready to Talk About Replacing Your Windows?
New windows are one of the most impactful upgrades you can make to your home. They improve comfort, reduce drafts, cut energy costs, and give your home a fresh, updated look.
If you’re in South Dakota, North Dakota, Iowa, Wisconsin, or Minnesota and you’re thinking about replacing your windows, Wolf River Construction is here to help. Whether you’re just starting to research options or you’re ready for a quote, we can walk you through the process and recommend the best solution for your home.
Next step:
Reach out today to schedule a no-pressure consultation and get a professional assessment of your windows.
