certified company
Based on 287 reviews
Our Certification Process
Best Pick Guarantee
Verified General Liability Ins.
Verified Workers' Comp
8th year as a Best Pick Call
"Our customers deal directly with the owners, and we treat your home with as much care as if it were our own. We listen to your needs to ensure your home looks the way you want. Our top-quality products are installed by highly skilled crews. We are proud to celebrate our 30th business anniversary with over 12,000 happy clients to date."

Bill Sheetz | President
Company Information
Services Offered
Lake Cook Exteriors, Inc., installs vinyl replacement windows, wood-finish interior laminated windows, fiberglass entry-door systems, storm doors, and patio doors. Other exterior improvements include vinyl siding, soffit and fascia, and seamless five- and six-inch K-style aluminum gutters and downspouts.
Services Not Offered
The company does not provide repair services.
Minimum Job
A $1,500 minimum is required.
Lake Cook offers a ten-year labor warranty.
Company History
The company was founded in 1987 by husband-and-wife team Bill and Karen Sheetz. Bill's exterior remodeling experience spans 45 years. He began as a siding installer in the 1970s and then moved into sales before starting Lake Cook with Karen.
Areas Served
Northwest Chicago Suburbs
A selection of 287 homeowner reviews:
“Everything was great. Lake Cook Exteriors did window replacement for me, and the whole thing was fantastic. It was flawless—great product, great installer. I'd give them an A+.”
“They replaced windows. They came out right away, assessed the situation carefully and accurately, and came up with a solution. The work was very carefully and thoroughly done, and the follow-up afterwards couldn't have been better. They're A+.”
“I had two windows put in, and they look great. The installer was fabulous. He cleaned up his mess real well. I'd give them an A.”
“It was a great experience with the windows. It was excellent—A+. I'd recommend them for window or door replacement.”
“Lake Cook Exteriors replaced our front door. It was installed properly, and it looks beautiful. I'd give them an A.”
“They did windows. It was excellent work. I have no complaints. And I'd absolutely recommend them for it.”
“They changed all the windows for me. I'd give them the highest grade for my overall experience.”
“Basically, the process of working with us, giving us the estimate, the questions we had about the whole product, and giving us the information we wanted, made it a good experience. We were probably one of the pickier customers, and they were super patient with us. They were happy to help every time we had a question. They helped out with the whole payment structure, and the delivery was on time. The people they sent over knew what they were doing, so everything was pretty good. They changed all our windows. Overall, I'd give them an A.”
“They did windows for me. They were easy to deal with, and the work was done well. I'd give them an A+.”
“They did a door and a screen door for us. They were easy to work with and nice people. They were very helpful picking out what we wanted. They're an A+.”