Exterior Remodeling & Window Replacement in Sun Prairie, WI
Wilco Exteriors replaces and installs windows for Sun Prairie homeowners, and we’re a full residential roofing contractor too, handling roof inspections, roof replacement, and new roof installation. Our team also takes on siding, gutters, exterior doors, and soffit and fascia. When something on the outside of your home is drafty, damaged, or wearing out, we’ll inspect it for free and give you a clear written estimate.
Window Replacement in Sun Prairie, WI
You can usually tell when windows are done. The furnace runs longer on windy nights. A pane has fogged between the glass. One sash sticks, another won’t stay up, and the frames are starting to soften under the paint.
Wilco provides window replacement for Sun Prairie homeowners with energy-efficient vinyl and fiberglass replacement windows. Our window installers measure each opening individually, then set every new window square, seal it around the full perimeter, and finish the trim inside and out. That’s what keeps air and water out and lets the window open and lock the way it should.
New windows done right mean fewer drafts, easier operation, and rooms that stay more comfortable year-round. See our window replacement page for more on materials and glass.
Common Window Problems
These are the issues we see most often when homeowners call us about replacement windows:
Drafts Around the Frame Cold air sneaks in near the sash even when the window is shut.
Fog Between the Panes A haze inside the glass means the seal has failed.
Windows That Stick The sash drags or jams partway through its track.
Difficult Locks The latch has to be forced or no longer pulls the window tight.
Deteriorating Frames Soft wood, peeling paint, or cracked vinyl signal a frame that’s wearing out.
Windows That Won’t Stay Open Worn balances let the sash drop as soon as you let go.
Replacement windows address these problems at the source. Each one is sized for its opening and sealed in place, which closes the gaps behind drafts and makes the area near the glass more comfortable. Energy-efficient glass helps rooms hold a steadier temperature, while new sashes open easily and lock securely. And fresh frames and clear glass give the whole house a cleaner look.
Replacement Window Options for Your Home
Sun Prairie has a mix of older homes and newer construction, and the right window depends on the house and the room. Wilco installs energy-efficient vinyl and fiberglass replacement windows, and we’ll walk you through the choices in plain terms during your estimate.
Double-Hung Replacement Windows
Both sashes slide, so you can open the top, bottom, or both for airflow. They suit most rooms, and tilt-in sashes make the outside glass easy to clean from indoors.
Sliding Replacement Windows
Sliders open side to side with a light push, with no lifting required. They’re a practical fit over counters, in basements, and in openings wider than they are tall.
Picture Windows
One fixed pane that lets in plenty of daylight and keeps the view clear. They’re often paired with operating windows so the room still gets fresh air.
Custom-Fit Replacement Windows
Existing openings are rarely a perfect standard size. We measure each one and order windows to fit, which helps them seal tightly and look finished.
Vinyl or Fiberglass
Vinyl is cost-effective and needs little maintenance. Fiberglass costs more but holds its shape well through temperature changes. We’ll help you decide which fits your home.
What to Expect During Window Replacement
We keep the process simple and make sure you know what’s happening at each step.
Free Consultation and Estimate
We visit your home, hear what’s bothering you, and look at the windows in person. The visit and estimate are free.
Evaluating Your Existing Windows
We check each window’s operation, seals, frames, and surrounding trim, then explain what needs replacing and what can wait.
Choosing Your Replacement Windows
We help you choose styles, materials, and glass, take exact measurements, and give you an itemized written quote.
Preparing for Installation
Once your windows arrive, we schedule an install date and let you know what to move beforehand.
Replacement Window Installation
Our crew removes each old window, prepares the opening, and installs, seals, and trims the new one. If we find hidden damage, we’ll show you first.
Cleanup and Final Walkthrough
We haul away the old windows, clean up, and test every new window with you before we leave.
Many window replacement projects are finished in a day or two. Larger homes or jobs with framing repairs can take longer, and we’ll give you a realistic timeline up front.
Residential Roofing in Sun Prairie, WI
Along with window replacement, Wilco Exteriors is a roofing contractor serving Sun Prairie homeowners. Our residential roofing services cover everything from a single inspection to a complete new roof.
Most homeowners call our roofers after noticing something specific. It might be shingles in the yard after a windy night, a few that look cracked or curled, a water stain on the ceiling, or flashing pulling away from a chimney or vent. Others just have an older roof and want to know where it stands.
Wisconsin weather wears on a roof gradually. Snow and ice sit on it through winter, storms bring wind and heavy rain, and freeze-thaw cycles slowly loosen fasteners and break down sealants. Much of that wear isn’t visible from the ground.
As a roofing company, we start by looking closely at the whole roof, then recommend the work it actually needs. Often that’s a targeted repair. When wear is widespread, it may be a new asphalt shingle roof. Either way, you’ll get a straight answer and a clear price.
Roof Inspections
Along with window replacement, Wilco Exteriors is a roofing contractor serving Sun Prairie homeowners. Our residential roofing services cover everything from a single inspection to a complete new roof.
Most homeowners call our roofers after noticing something specific. It might be shingles in the yard after a windy night, a few that look cracked or curled, a water stain on the ceiling, or flashing pulling away from a chimney or vent. Others just have an older roof and want to know where it stands.
Wisconsin weather wears on a roof gradually. Snow and ice sit on it through winter, storms bring wind and heavy rain, and freeze-thaw cycles slowly loosen fasteners and break down sealants. Much of that wear isn’t visible from the ground.
As a roofing company, we start by looking closely at the whole roof, then recommend the work it actually needs. Often that’s a targeted repair. When wear is widespread, it may be a new asphalt shingle roof. Either way, you’ll get a straight answer and a clear price.
Roof Inspections, Replacement & Installation
The right next step depends on your roof’s condition, so every project starts with a roof inspection. We check the shingles, flashing, vents, and roof edges, look for visible damage and aging materials, and trace any leaks to their source. Many inspections end with a simple repair or confirmation that the roof is in good shape.
Roof replacement makes sense when damage or deterioration is widespread, leaks keep returning, or the roof has reached the end of its useful life. When that’s the case, our roof installation process includes:
Removing the existing roofing materials
Inspecting the roof deck and underlying structure
Installing waterproofing and underlayment
Installing your new asphalt shingle roof
Cleaning up your property thoroughly when the job is done
Siding Installation & Replacement
Siding protects your walls from rain, snow, and wind and gives the house its finished look. When panels crack, warp, come loose, or fade unevenly, moisture can get behind them and the exterior starts to look tired.
Wilco is a siding contractor serving Sun Prairie homeowners who need damaged sections replaced or want a full exterior update. We inspect your current siding and the wall behind any problem areas, help you choose a style and color that fit your home, and handle the entire siding installation, from removing the old material to finishing the trim around windows, doors, and corners.
Other Exterior Services
Soffit/Fascia Replacement
Fascia supports your gutters and seals the roof edge, while vented soffit helps the attic breathe. When these boards rot, loosen, or show damage, replacing them protects the roofline and finishes the exterior.
Door Replacement
A drafty, sticking, or poorly sealed door is a daily hassle. We handle door installation for entry and patio doors, measuring carefully so each one fits square, seals well, and swings smoothly.
Gutter Replacement
Leaking seams, sagging runs, overflow, and gutters pulling away from the roofline send water down your siding instead of away from the house. We install seamless gutters that direct runoff away from your walls and foundation.
Why Sun Prairie Homeowners Choose Wilco Exteriors
Multiple Exterior Services From One Company Windows, roofing, siding, gutters, doors, and soffit and fascia, all handled by our team.
Recommendations Based on Your Home We inspect first and tell you honestly what needs work and what can wait.
Clear Communication You’ll know the scope, cost, and schedule before we start.
Careful Installation Our own crew does the work, not subcontractors, with close attention to fit and sealing.
Respect for Your Property We protect your home, clean up thoroughly, and review the finished work with you. Wilco is locally owned, licensed, bonded, and insured, with an A+ BBB rating.
Client Testimonials
Reviews from Janesville, WI & Illinois homeowners we’ve helped.
Serving Sun Prairie, Wisconsin
Wilco Exteriors helps Sun Prairie homeowners with window replacement, roofing, siding, gutters, exterior doors, and soffit and fascia. Wisconsin’s seasons keep a home’s exterior busy, from winter cold that tests window seals to storms that push wind and rain against the roof and siding. When you notice a draft, a leak, or damage, we’ll come out, find the cause, and explain your options clearly.
Frequently Asked Questions
Drafts, fog between the panes, sticking sashes, locks that don’t catch, and soft or cracked frames are the most common signs. When several windows show more than one of these, replacement is usually the better long-term choice.
Yes. Many homeowners start with the windows causing the most trouble and replace the rest later. We’ll help you prioritize.
We remove each old window, prepare the opening, and install, seal, and trim the new one. Then we clean up and test every window with you.
After a storm with strong wind or hail, when you notice missing shingles or a leak, or if your roof is getting older and hasn’t been checked recently.
Isolated damage, like a few missing shingles or one loose section of flashing, can usually be repaired. Widespread wear, recurring leaks, or a soft roof deck point toward replacement. An inspection will tell you which applies.
Look for a licensed and insured contractor who inspects before quoting, explains findings clearly, and provides a detailed written estimate. Local reviews and a verifiable address are good signs too.
Cracked, warped, or loose panels, uneven fading, and gaps at seams or corners. We’ll check the wall behind any damaged areas before recommending replacement.
When leaks appear in several places, sections sag or pull away from the house, or gutters overflow even when clean.
Ready to Get Started?
If your windows are drafty or hard to use, pick a time on the calendar and we’ll take a look. We can also inspect your roof or check your siding, gutters, or doors during the same visit. It’s free, with no pressure to decide.