Top-rated window pros.

Get matched with top window pros in Cortland, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your window service project in Cortland, IL?

Select your specific project to find the pro for you.

TRUSTED BY CORTLAND, IL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon78
    Verified window services reviews

Verified Reviews for Window Service pros in Cortland, IL

*The Angi rating for Window Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

*The HomeAdvisor rating for Window Service companies in Cortland, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

Last update on May 10, 2026

Find Window pros in Cortland

Avatar for Windo-Well Cover Company
Windo-Well Cover Company
4.9(
56
)

Serving Cortland, IL and surrounding areas

Approved

In business since 1957

Free estimates

Credit card accepted

"Very professional and got the work done as promised in a timely and efficient manner. Highly recommend them for your window well cover needs."
Custom made to any size.
open wells are unsafe
special situation cover
"Z" Flashing
On paver bricks

+9

Response time10 hrs
Recommended by98%of homeowners
Request Quote
Avatar for Mad City Windows & Baths
Mad City Windows & Baths
4.4(
832
)

Serving Cortland, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Warranties offered

"A very thorough job of installation of the windows. The windows look, and feel MUCH better than Our old windows."
windows
siding
siding
siding
windows

+20

Response time10 mins
6344 neighbors recently requested a quote
Recommended by90%of homeowners
Request Quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
303
)

Serving Cortland, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Great Company. Fast Efficiant work. Shawn the Window Technician was great, and Devan who was helping him install and we learned that he was actually a Production Manager. Both were great. The completed all of our windows. 7 standard, and a picture window in less than two days. Great company. Great customer service. Shawn,Devan, and Lauren were all amazing."
Recommended by77%of homeowners
Request Quote
Avatar for Renewal by Andersen
Renewal by Andersen
3.8(
126
)

Serving Cortland, IL and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2007

Free estimates

Warranties offered

"Renewal by Andersen of Wyoming did an incredible job with installing windows in our home. Thank you to the team who did the install and to the company for creating these exceptional windows."
Brighten up your office space!
City Apartments
Create an oasis in the primary bedroom
Create a nice beach view
Floor to ceiling sunlight

+2

Response time10 mins
5373 neighbors recently requested a quote
Recommended by66%of homeowners
Request Quote
Avatar for Prime Time Window & Gutter Cleaning Inc
Prime Time Window & Gutter Cleaning Inc
3.7(
422
)

Serving Cortland, IL and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Prompt, courteous service. The washer told me which windows he would suggest replacing which will be a large savings for me. I would definitely recommend them and use them again."
Removing the debris
Pressure washing the sidings
Pressure washing the sidings
Cleaning interior windows
Commercial Window Cleaning

+85

Response time7 hrs
6 neighbors recently requested a quote
Recommended by71%of homeowners
Request Quote
Avatar for J&K Home Improvement & Restoration
J&K Home Improvement & Restoration
5.0(
8
)

Serving Cortland, IL and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"We have once again reached out to Joe Kim at J & K Home Improvements when we had a new project planned. We were completely satisfied when we replaced our siding and roof with Joe. Now Joe and his professional crew have replaced all our windows . There are never surprises or additions from when the job is quoted. Once again we are totally satisfied and delighted with their work!! It has been a stress free experience each and every time."
Roofing
Siding Job
GAF Shingles
Siding job site
Modifed Bituman

+2

Recommended by100%of homeowners
Request Quote
Avatar for WindowWorks Chicago
WindowWorks Chicago
5.0(
1
)

Serving Cortland, IL and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

Window Works is the best choice for all of your replacement window needs. From energy efficiency to beauty and durability, our products are made to last and improve the look and value of your home. Our glass systems can help reduce fading of carpets, drapes and furniture, all while keeping you comfortable inside no matter the weather. From traditional double-hung windows to fancy bow & bay windows and even sliding patio doors, Window Works is your one stop shop for window replacement. Our products are made in America and come with exceptional warranties. With over 21 years' experience, we can do it all. We take pride in our highly trained, experienced, expert installation teams and our knowledgeable and friendly staff. Call us today! We look forward to working with you!

Response time30 mins
Request Quote
...
Showing 1-10 of 196
Windows questions, answered by experts

Casement windows can either be left or right opening, and every window manufacturer makes both so that you can choose which works best for your space. In many cases, you’ll want one left-opening and one right-opening casement window to sit on either side of a picture window or to act as the side panels in a bay window. Just remember that the direction is described from the curb. An FCL (from the curb left) hinges out to the left if you’re looking at the exterior of your home, and an FCR (from the curb right) hinges out to the right.

The best thing to clean windows with is a mixture of white vinegar, warm water, and dish soap. This will remove dirt, pollen, and grime without destroying any tints or protective films on your glass. You can also use a commercial window cleaner, but make sure to choose one that doesn’t have ammonia in it, as this can damage window coverings and frame materials over time.

Yes, you can always make an existing window bigger, but the job complexity varies widely depending on the location of the window and the framing around it. Exterior walls are always load-bearing, so making windows wider will require structural changes that make for a more complex but doable project. Making windows taller often won’t require structural changes.

If you decide to forgo your old windows and upgrade them to modern day technology, there may be some people interested in the old windows. You can try selling them on an online marketplace for around $50 to $100 each (so long as the window wasn’t damaged during the removal). This can also help off set the overall price to replace them.

Yes, triple-pane windows are more resistant to condensation. They help to reduce interior condensation that forms as a result of warmer temperatures inside your home than outside it. This makes them a good fit for cooler climates, particularly with newer, well-sealed homes that retain higher levels of moisture in the winter months.

The Cortland, IL homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles