What great windows! I am excited to say that I won't have to replace my windows for a long time, but when I do I will be back to Lang Exterior!

You have to be able to appreciate a locally made product! As a contractor, it's comforting for me to be able to tell my customers that when they spend their money on Lang windows, they are keeping their money in Chicago. Not to mention the fact that Lang has a price guarantee.

I have had a great relationship with Lang for a couple of years now. I would happily recommend them to anyone looking to get into the window business.

After being in the industry for over two decades, I can easily say that I have never found a better price or a better product. Lang consistently produces the best windows, at the best prices, and what's more, they have over 30 some color combinations! I have never had an issue finding a client something that they liked. Plus since the price of Lang windows are where they are, I am able to pass the saving on to home owners. The home owners, then end up spreading the word about my work, and I've gotten more work because of it!

I've been doing windows for a long time now. I am surprised at how well the Lang brand has treated me. I save money, my clients save money. It's that simple.

My contractor recomended these windows, and I would like to pass on the favor! Couldn't be happier.

Beautiflul windows, a knowlegable staff, and a price guarentee! Lang took the work out of windows! Couldn't be happier with my new windows that reduce the neighborhood sounds!

Lang Exterior has superior quality and expertise when it comes to windows and service. They were extremely helpful in choosing the right windows for me and answered all my questions thoroughly. They showed great meticulous quality and detail which made their windows stand out from any other. I was extremely pleased with my windows and would recommend Lang to anyone I know.

Replacing windows was easier than I thought. I spoke with a contractor about Lang Exterior (they are a local manufacturer here in Chicago.) I am big on treating my community well so naturally I was excited to see that there was something here in town. We started looking through the different options, and we decided that the "Platinum" line was right for me. This is a unique looking window with a beveled edge on the outside. Beautiful! I paired it with an energy package they offer, and I am looking forward to saving some money on my gas bills this winter!