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Lang Exterior, is a vinyl window manufacturer located in Chicago, IL. We have been a window manufacturer since 1953. We currently manufacture over 30 kinds of windows and other vinyl products. Our sister firm, Top Coat. is the leader of profile laminating in the window industry. With Lang Exterior you know you're getting fast professional and professional service.
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My wife and I had a contractor rehab our house and they installed 13 Lang vinyl windows. They were really nice black exterior and white interior vinyl windows. We were having problems with a couple windows not operating properly, and I emailed Lang customer service. The next day I received a call the next day by David who was genuinely concerned with the problems we were having.
Lang Exterior vinyl and aluminum windows and patio doors are entirely made in the United States. Lang opened for business in 1953 in Chicago, Illinois, and all of our factory production is still done in Chicago today. Lang Exterior not only extrudes its own custom-formulated premium vinyl profiles but also does vinyl lamination and fabrication of many other parts that go into its products.
Reviews (26)
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George M.
Jun 30, 2022
This place is good the ladies at the front that do the ordering know what they are talking about when it comes to ordering windows I have come here three times for my windows and I don't think anyone beats their prices
Justin Lau
May 13, 2022
They provide good and fast service. They were able to fix my window screen within 5 minutes. Thank you!
Manuel Sedano
Apr 03, 2022
Great costermer service, great windows order received on time just great all around business.
Javier Rodarte
Feb 15, 2022
These are my brand new windows from Lang Exterior Inc.2323 W.59th Street. I hired Grzegorz Nedza Remodeling 3 Paxos dr.apt 2e, Palos Hill, IL 60465 to install 11 windows and he turns and purchase the cheapest windows to increase his profit. Installation on 08/17/2021 Condensation, Frost and Draft.
Travis VanHuisen
Feb 03, 2022
For some reason the glass from one of our recently installed Lang windows had broken and when I brought it in to get fixed they offered to fix the window for free. All the other windows in the house look great and have worked wonderfully!
Marjorie Beto
Nov 26, 2021
My contractor is Michigan found Lang from another client. We just replaced 17 windows and 3 sliding doors. We love them! So far I'm very happy!
Milton Waters
Mar 19, 2021
Beth is absolutely a gem. She took care of me and I have absolute confidence in the way they stand by their product. 16 years later they still treat you like family
Bobby V.
Dec 08, 2020
This company and its staff have been outstanding and provided the best product for my company for over 15yrs. The wholesale pricing makes the sale for my middle class customer base affordable, and at the same time recieve a high quality window. I have installed these windows in my home and for my family and friends. For 15yrs I have yet to receive a call for return service requests or complaints.
Robert Welsh
Nov 05, 2020
Been dealing with these people and their products for 20 years. It's the company I trust to use in my own home. I can't say enough good things how about their products and the owners and the employees. I recommend them to all my customers on a daily basis
Luka P.
Jul 28, 2020
We have been purchasing windows for our renovation projects over the years at Lang and always happy with the product. Theresa and Jen are great, always helpful and get us what we need. Also, they are the only company that does not paint their windows. Highly recommend this place.
Jamie F.
Feb 09, 2020
The service was incredible and they were extremely helpful. I had a broken crank for our bathroom window that we purchased 9 years ago and they found a match for us right away. I would highly recommend working with them.
James Dudek
Dec 24, 2019
Ordered all triple pane argon filled windows for my new construction and they are outstanding. The house stays warm in winter and cool in summer. They are very well insulated and look great. For awesome customer service as for Beth!
Richard S.
Oct 22, 2019
I want to say thank you to the Team at Lang Exterior windows. They allowed me to come in after work hours and drop off my broken window. They had a quick turnaround time with the repair. They also found out that I was currently in the military and they really took care of me and showed great appreciation for my service.
K. Samantha I.
Oct 16, 2019
This is the worst company in the construction industry I have dealt with in a long time. I've been in business 20 years so I probably best to just keep selling though a manufacturer like Lincoln or Lindsay. Both of them offer REAL warranties and stand by their product rather than blowing people off for months. Can't stand little crappy companies that give me and my clients the run around.
Juan A.
Apr 24, 2019
They were extremely helpful and informative. I will definitely be back in the near future for any of my window needs.
Brian L.
Mar 04, 2019
Absolute junk! 4 didfferent contractors, 3 different window companies have seen this garbage and all, every single one, say that lang exteriors sells the worst windows. they rip off families who have been through tragedy! uneducated, morally corrupt, thieves! contact me for photo proof, within a week a site is being developed to specifically stop lang exteriors as well as lawsuits! ALL 7 PEOPLE HAVE SEEN THEY WERE PROPERLY INSTALLED, THEY ARE JUST JUNK THEY USE TO STEAL YOUR MONEY THEY BLAME EVERYONE ELSE FROM BEHIND A LAZY PERSONS CUBICLE NOTICE THAT THE HOMES HUMIDITY IS NORMAL!
Nelson A.
Dec 19, 2018
A friend recommended Lang Exterior and I'm so glad he did! I was using Climate Guard but Lang has such better pricing and quality! I highly recommended you buy from them!
Laura C.
Nov 26, 2018
Incredible service. I had an issue with a window and Jan was very patient in explaining how to correct it. They even called back to check to see how everything was going a couple of times. Above and beyond! Thanks again.
Brian F.
Aug 07, 2018
I came to Lang with my contractor looking to replace my old Storm Windows and was pleasantly surprised with the excellent service we received! Jan was super helpful and knowledgable. Rather than simply selling me what I came in for, she took the time to educate me on why I might be making a big mistake by putting up new Storm's instead of buying replacement windows.

She spent 15-20 minutes explaining the pro's and con's and gave me a detailed price breakdown on both options (I was shocked to learn that the price difference was nominal). After considering what she said (and taught me), we've decided to make the investment in replacement windows instead of wasting our money on new Storm's. Jan could have quickly sold me the storms and moved onto the next customer but she was willing to take the time to educate me and make a thoughtful recommendation. I'm not sure where these negative reviews come from. My contractor (who has worked with Lang for decades) raves about this company and I had an excellent experience with them.
Iryna N.
Feb 28, 2018
We've been using Lang Exterior windows on all of our projects for over 5 years now. Never had an issue. And you can't beat their prices. Lead time is only 7-10 days (comparing to 4 weeks wait on Jeld-Wen or Sierra Pacific). Their customer service is great: always very patient, knowledgeable and helpful. Our contractor accidentally broke the glass on one of the window sashes and they got it replaced within a day. It saved us so much time and money! Highly recommend them.
Adam T.
Feb 16, 2018
Customer service in this location is superb! They are very patient to explain types of windows and measurement. I made a mistake giving them the wrong measurements and paid for it. They are so nice to correct it free of charge! Also, their price is so much more competitive compare to the one right across! Will definitely work with them again.
Lisa D.
Feb 01, 2018
After being encouraged to reach out for a resolution, I contacted Lang in the hopes of getting my window issues resolved. I jumped through a bunch of hoops, sent pictures, called, etc and have been completely ignored since then. I will not be wasting any more time on this.
Anne G.
Oct 11, 2017
We have been long time customers and truly appreciate the quality of the windows that Lang builds. We have referred customers to their showroom to investigate choices and they have been equally pleased!
Rick S.
Apr 12, 2017
I've dealt with Lang Exteriors on 3 separate occasions. I've never had an issue and never had a complaint about the windows. I'll continue to do business with them. They are really nice to me and my crew.
Bill S.
Mar 27, 2017
Just placed anouther order at lang exterior, the girls behide the counter are extremely helpfull as to making sure my order was place correctly, and the customer service is a 10 star. keep up the great service i will be back with more orders my customers love youre windows.
R. H.
Apr 28, 2011
The customer service associated with this company at BOTH LOCATIONS is BEYOND HORRIBLE. My contractor and I contacted the Pulaski location and requested to speak to a Supervisor. WE WERE IMMEDIATELY HUNG UP ON! WE SPOKE TO CHRISTINE, THE SALES REPRESENTATIVE, AND SHE HUNG UP ON US FOUR TIMES! AND SUPPOSEDLY SHE IS THE DAUGHTER OF THE OWNER! We contacted the location on 59th street and spoke to the office manager, Fran. ONCE AGAIN, FRAN HUNG UP ON US!

We called 2 additional times and requested to speak to the owner and was placed on hold for over 10 minutes. As of yet, we could not get through to a Supervisor or the owner. BUYER BEWARE! IF THIS IS HOW THEY TREAT YOU AS A NEW CUSTOMER IMAGINE HOW THEY WILL TREAT YOU IF YOU RUN INTO PROBLEMS WITH THEIR WINDOWS! They may have cheaply priced windows but the trade off is HORRIBLE CUSTOMER SERVICE. THEY ARE THE ANTICHRIST OF CUSTOMER SERVICE